# EDGAR Filing Document

**Accession Number:** 0000063075
**File Stem:** 0001752724-23-066022
**Filing Date:** 2023-3
**Character Count:** 62601
**Document Hash:** a55e74319bdac7df7cdb224450342a2e
**Contains OCR:** False
**Source Format:** 

## Filing Content

## Filing Summary
**0001752724-23-066022.hdr.sgml**: 20230327

**ACCESSION NUMBER**: 0001752724-23-066022

**CONFORMED SUBMISSION TYPE**: NPORT-P

**PUBLIC DOCUMENT COUNT**: 4

**CONFORMED PERIOD OF REPORT**: 20230131

**FILED AS OF DATE**: 20230327

**DATE AS OF CHANGE**: 20230327

**PERIOD START**: 20231031

**FILER**: 

**COMPANY DATA:**
- **COMPANY CONFORMED NAME:** MFS SERIES TRUST IX
- **CENTRAL INDEX KEY:** 0000063075
- **IRS NUMBER:** 042535629
- **STATE OF INCORPORATION:** MA
- **FISCAL YEAR END:** 0430

**FILING VALUES:**
- **FORM TYPE:** NPORT-P
- **SEC ACT:** 1940 Act
- **SEC FILE NUMBER:** 811-02464
- **FILM NUMBER:** 23761537

**BUSINESS ADDRESS:**
- **STREET 1:** 111 HUNTINGTON AVENUE
- **STREET 2:** 21ST FLOOR
- **CITY:** BOSTON
- **STATE:** MA
- **ZIP:** 02199
- **BUSINESS PHONE:** 18006372929

**MAIL ADDRESS:**
- **STREET 1:** 111 HUNTINGTON AVENUE
- **STREET 2:** 21ST FLOOR
- **CITY:** BOSTON
- **STATE:** MA
- **ZIP:** 02199

**FORMER COMPANY:**
- **FORMER CONFORMED NAME:** MFS SERIES TRUST IX /MA/
- **DATE OF NAME CHANGE:** 19951218

**FORMER COMPANY:**
- **FORMER CONFORMED NAME:** MFS SERIES TRUST IX
- **DATE OF NAME CHANGE:** 19950207

**FORMER COMPANY:**
- **FORMER CONFORMED NAME:** MFS BOND FUND
- **DATE OF NAME CHANGE:** 19930408

## Series and Classes Contracts Data

### MFS Inflation-Adjusted Bond Fund (Series ID: S000002493)

| Class ID   | Class Name   | Ticker Symbol   |
|:---|:---|:---|
| C000006724 | A            | MIAAX           |
| C000006725 | R4           | MIAJX           |
| C000006726 | B            | MIABX           |
| C000006727 | C            | MIACX           |
| C000006728 | I            | MIAIX           |
| C000006730 | R1           | MIALX           |
| C000006732 | R2           | MIATX           |
| C000006733 | R3           | MIAHX           |
| C000126364 | R6           | MIAKX           |

## Nport-Ex

![](imgbb15ffd51.gif)

### Quarterly Report
January 31, 2023

MFS<sup>®</sup> Inflation-Adjusted<br> Bond Fund

![](imgf52813162.gif)

IAB-Q1

------

### Portfolio of Investments
1/31/23 (unaudited)

The Portfolio of Investments is a complete list of all securities owned by your fund. It is categorized by broad-based asset classes.

---

| | | |
|:---|:---|:---|
| **Issuer** | **Shares/Par** | &nbsp;&nbsp;&nbsp;**Value ($)** |
| Bonds – 99.6% | Bonds – 99.6% | Bonds – 99.6% |
| Asset-Backed & Securitized – 1.8% | Asset-Backed & Securitized – 1.8% | Asset-Backed & Securitized – 1.8% |
| 3650R Commercial Mortgage Trust, 2021-PF1, "XA", 1.029%, 11/15/2054 (i) | $&nbsp;&nbsp;14738831 | &nbsp;&nbsp;&nbsp;$835721 |
| AREIT 2022-CRE6 Trust, "AS", FLR, 5.96% (SOFR - 30 day + 1.65%), 1/16/2037 (n) | &nbsp;&nbsp;&nbsp;&nbsp;6662500 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;6272297 |
| BBCMS Mortgage Trust, 2021-C10, "XA", 1.296%, 7/15/2054 (i) | &nbsp;&nbsp;13307054 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;967142 |
| BBCMS Mortgage Trust, 2021-C9, "XA", 1.624%, 2/15/2054 (i) | &nbsp;&nbsp;&nbsp;&nbsp;8088861 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;734858 |
| Benchmark 2021-B23 Mortgage Trust, "XA", 1.271%, 2/15/2054 (i) | &nbsp;&nbsp;25454930 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;1720904 |
| Benchmark 2021-B24 Mortgage Trust, "XA", 1.151%, 3/15/2054 (i) | &nbsp;&nbsp;15475243 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;944867 |
| Benchmark 2021-B27 Mortgage Trust, "XA", 1.267%, 7/15/2054 (i) | &nbsp;&nbsp;20996696 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;1515821 |
| Benchmark 2021-B28 Mortgage Trust, "XA", 1.283%, 8/15/2054 (i) | &nbsp;&nbsp;25418842 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;1843560 |
| BSPDF 2021-FL1 Issuer Ltd., "AS", FLR, 5.934% (LIBOR - 1mo. + 1.48%), 10/15/2036 (n) | &nbsp;&nbsp;&nbsp;&nbsp;3056500 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;2969442 |
| Commercial Mortgage Pass-Through Certificates, 2021-BN31, "XA", 1.324%, 2/15/2054 (i) | &nbsp;&nbsp;19527594 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;1472554 |
| Morgan Stanley Capital I Trust, 2021-L5, "XA", 1.296%, 5/15/2054 (i) | &nbsp;&nbsp;10264564 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;710251 |
| Morgan Stanley Capital I Trust, 2021-L6, "XA", 1.227%, 6/15/2054 (i) | &nbsp;&nbsp;12924964 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;820313 |
| Morgan Stanley Capital I Trust, 2021-L7, "XA", 1.1%, 10/15/2054 (i) | &nbsp;&nbsp;27597056 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;1646048 |
| PFP III 2021-8 Ltd., "AS", FLR, 5.704% (LIBOR - 1mo. + 1.25%), 8/09/2037 (n) | &nbsp;&nbsp;&nbsp;&nbsp;3622500 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;3411051 |
| Wells Fargo Commercial Mortgage Trust, 2021-C60, "XA", 1.547%, 8/15/2054 (i) | &nbsp;&nbsp;&nbsp;&nbsp;9509357 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;842377 |
|  |  | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;$26707206 |
| Consumer Services – 0.1% | Consumer Services – 0.1% | Consumer Services – 0.1% |
| Conservation Fund, 3.474%, 12/15/2029 | $&nbsp;&nbsp;&nbsp;&nbsp;1438000 | &nbsp;&nbsp;&nbsp;$1266765 |
| Industrial Revenue - Other – 0.0% | Industrial Revenue - Other – 0.0% | Industrial Revenue - Other – 0.0% |
| Howard University, Washington D.C., AGM, 2.416%, 10/01/2024 | $&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;325000 | &nbsp;&nbsp;&nbsp;$308542 |
| Howard University, Washington D.C., AGM, 2.516%, 10/01/2025 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;402000 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;379113 |
|  |  | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;$687655 |
| Medical & Health Technology & Services – 0.2% | Medical & Health Technology & Services – 0.2% | Medical & Health Technology & Services – 0.2% |
| ProMedica Toledo Hospital, "B", AGM, 5.325%, 11/15/2028 | $&nbsp;&nbsp;&nbsp;&nbsp;2421000 | &nbsp;&nbsp;&nbsp;$2448768 |
| ProMedica Toledo Hospital, "B", AGM, 5.75%, 11/15/2038 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;747000 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;751969 |
|  |  | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;$3200737 |
| Mortgage-Backed – 0.7% | Mortgage-Backed – 0.7% |  |
| Freddie Mac, 1.8%, 4/25/2030 (i) | $&nbsp;&nbsp;&nbsp;&nbsp;3519182 | &nbsp;&nbsp;&nbsp;$375707 |
| Freddie Mac, 1.665%, 5/25/2030 (i) | &nbsp;&nbsp;&nbsp;&nbsp;6326494 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;627505 |
| Freddie Mac, 1.169%, 9/25/2030 (i) | &nbsp;&nbsp;&nbsp;&nbsp;3529812 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;257063 |
| Freddie Mac, 0.329%, 1/25/2031 (i) | &nbsp;&nbsp;29806263 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;597955 |
| Freddie Mac, 0.781%, 1/25/2031 (i) | &nbsp;&nbsp;11388256 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;592491 |
| Freddie Mac, 0.936%, 1/25/2031 (i) | &nbsp;&nbsp;&nbsp;&nbsp;8529316 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;516254 |
| Freddie Mac, 0.517%, 3/25/2031 (i) | &nbsp;&nbsp;36417520 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;1183584 |
| Freddie Mac, 1.216%, 5/25/2031 (i) | &nbsp;&nbsp;&nbsp;&nbsp;4421663 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;355802 |
| Freddie Mac, 0.938%, 7/25/2031 (i) | &nbsp;&nbsp;&nbsp;&nbsp;7521262 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;486042 |
| Freddie Mac, 0.536%, 9/25/2031 (i) | &nbsp;&nbsp;32486236 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;1246676 |
| Freddie Mac, 0.855%, 9/25/2031 (i) | &nbsp;&nbsp;&nbsp;&nbsp;9783880 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;578519 |
| Freddie Mac, 0.349%, 11/25/2031 (i) | &nbsp;&nbsp;49721062 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;1288750 |
| Freddie Mac, 0.498%, 12/25/2031 (i) | &nbsp;&nbsp;50485813 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;1805342 |
| Freddie Mac, 0.567%, 12/25/2031 (i) | &nbsp;&nbsp;&nbsp;&nbsp;8215224 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;328605 |
|  |  | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;$10240295 |
| Municipals – 1.3% | Municipals – 1.3% | Municipals – 1.3% |
| California Earthquake Authority Rev., Taxable, "B", 1.477%, 7/01/2023 | $&nbsp;&nbsp;&nbsp;&nbsp;1310000 | &nbsp;&nbsp;&nbsp;$1290436 |
| Chicago, IL, Transit Authority Sales Tax Receipts Refunding Rev., Taxable, "B", 2.064%, 12/01/2024 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;523000 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;500582 |
| Chicago, IL, Transit Authority Sales Tax Receipts Refunding Rev., Taxable, "B", 2.214%, 12/01/2025 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;392000 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;368640 |
| Colorado Health Facilities Authority Rev., Taxable (Covenant Living Communities and Services), "B", 2.8%, 12/01/2026 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;825000 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;777399 |
| Golden State, CA, Tobacco Securitization Corp., Tobacco Settlement Rev., Taxable, "B", 3%, 6/01/2046 | &nbsp;&nbsp;&nbsp;&nbsp;2690000 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;2501538 |
| Massachusetts Educational Financing Authority, Education Loan Subordinate Rev., Taxable, "A", 2.641%, 7/01/2037 | &nbsp;&nbsp;&nbsp;&nbsp;7720000 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;7077650 |
| Michigan Finance Authority Student Loan Asset-Backed Rev., Taxable, "A-1A", 1.3%, 7/25/2061 | &nbsp;&nbsp;&nbsp;&nbsp;2792663 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;2605508 |

---

------

Portfolio of Investments (unaudited) – continued

---

| | | |
|:---|:---|:---|
| **Issuer** | **Shares/Par** | &nbsp;&nbsp;&nbsp;**Value ($)** |
| Bonds – continued | Bonds – continued | Bonds – continued |
| Municipals – continued | Municipals – continued | Municipals – continued |
| Michigan Finance Authority Tobacco Settlement Asset-Backed Rev., Taxable (2006 Sold Tobacco Receipts), "A-1", 2.326%, 6/01/2030 | $&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;619743 | &nbsp;&nbsp;&nbsp;$593293 |
| New Jersey Turnpike Authority, Turnpike Rev., Taxable, "B", 1.047%, 1/01/2026 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;745000 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;681256 |
| Philadelphia, PA, School District, Taxable, "A", AGM, 5.995%, 9/01/2030 | &nbsp;&nbsp;&nbsp;&nbsp;1925000 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;2075760 |
| West Virginia Tobacco Settlement Financing Authority Asset-Backed Refunding, Taxable, "A-1", 1.497%, 6/01/2024 | &nbsp;&nbsp;&nbsp;&nbsp;1020000 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;973032 |
| West Virginia Tobacco Settlement Financing Authority Asset-Backed Refunding, Taxable, "A-1", 1.647%, 6/01/2025 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;835000 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;772914 |
|  |  | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;$20218008 |
| U.S. Treasury Inflation Protected Securities – 95.2% | U.S. Treasury Inflation Protected Securities – 95.2% | U.S. Treasury Inflation Protected Securities – 95.2% |
| U.S. Treasury Bonds, 2.375%, 1/15/2025 | $&nbsp;&nbsp;41348692 | &nbsp;&nbsp;&nbsp;$41535515 |
| U.S. Treasury Bonds, 2%, 1/15/2026 | &nbsp;&nbsp;81908862 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;82403195 |
| U.S. Treasury Bonds, 1.75%, 1/15/2028 | &nbsp;&nbsp;17602918 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;17894638 |
| U.S. Treasury Bonds, 3.625%, 4/15/2028 | &nbsp;&nbsp;52015776 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;57656237 |
| U.S. Treasury Bonds, 0.75%, 2/15/2042 | &nbsp;&nbsp;97209998 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;84864139 |
| U.S. Treasury Bonds, 0.625%, 2/15/2043 | &nbsp;&nbsp;36408703 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;30757177 |
| U.S. Treasury Bonds, 0.75%, 2/15/2045 | &nbsp;&nbsp;47866148 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;40779247 |
| U.S. Treasury Bonds, 1%, 2/15/2048 | &nbsp;&nbsp;20753143 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;18392271 |
| U.S. Treasury Bonds, 0.25%, 2/15/2050 | &nbsp;&nbsp;10608023 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;7652694 |
| U.S. Treasury Bonds, 0.125%, 2/15/2051 | &nbsp;&nbsp;28627523 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;19750754 |
| U.S. Treasury Bonds, 0.125%, 2/15/2052 | &nbsp;&nbsp;30051826 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;20718151 |
| U.S. Treasury Notes, 0.625%, 1/15/2024 | &nbsp;&nbsp;73860457 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;72414023 |
| U.S. Treasury Notes, 0.25%, 1/15/2025 (f) | 199035192 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;192002875 |
| U.S. Treasury Notes, 0.375%, 7/15/2025 | &nbsp;&nbsp;66797323 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;64610102 |
| U.S. Treasury Notes, 0.625%, 1/15/2026 | 128767375 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;124558962 |
| U.S. Treasury Notes, 0.375%, 1/15/2027 | &nbsp;&nbsp;38080549 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;36386262 |
| U.S. Treasury Notes, 0.375%, 7/15/2027 | &nbsp;&nbsp;86089758 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;82378819 |
| U.S. Treasury Notes, 0.5%, 1/15/2028 | &nbsp;&nbsp;22812373 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;21831263 |
| U.S. Treasury Notes, 0.875%, 1/15/2029 | 122022387 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;118746610 |
| U.S. Treasury Notes, 0.125%, 7/15/2030 | 101630529 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;93408778 |
| U.S. Treasury Notes, 0.125%, 1/15/2031 | 137128210 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;125126813 |
| U.S. Treasury Notes, 0.125%, 1/15/2032 | 108471980 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;97935156 |
|  |  | &nbsp;&nbsp;&nbsp;$1451803681 |
| Utilities - Electric Power – 0.3% | Utilities - Electric Power – 0.3% | Utilities - Electric Power – 0.3% |
| Pacific Gas & Electric Co., 3.25%, 2/16/2024 | $&nbsp;&nbsp;&nbsp;&nbsp;4253000 | &nbsp;&nbsp;&nbsp;$4174503 |
| **Total Bonds** |  | &nbsp;&nbsp;**$1518298850** |
| Investment Companies (h) – 0.2% | Investment Companies (h) – 0.2% | Investment Companies (h) – 0.2% |
| Money Market Funds – 0.2% | Money Market Funds – 0.2% |  |
| MFS Institutional Money Market Portfolio, 4.29% (v) | &nbsp;&nbsp;&nbsp;&nbsp;3344054 | &nbsp;&nbsp;&nbsp;$3344388 |
| Other Assets, Less Liabilities – 0.2% |  | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;3085204 |
| **Net Assets – 100.0%** | **Net Assets – 100.0%** | &nbsp;&nbsp;&nbsp;**$1524728442** |

---

(f) All or a portion of the security has been segregated as collateral for open futures contracts.

(h) An affiliated issuer, which may be considered one in which the fund owns 5% or more of the outstanding voting securities, or a company which is under common control. At period end,
the aggregate values of the fund's investments in affiliated issuers and in unaffiliated issuers were $3,344,388 and $1,518,298,850, respectively.

(i) Interest only security for which the fund receives interest on notional principal (Par amount). Par amount shown is the notional principal and does not reflect the cost of the
security.

(n) Securities exempt from registration under Rule 144A of the Securities Act of 1933. These securities may be sold in the ordinary course of business in transactions exempt from
registration, normally to qualified institutional buyers. At period end, the aggregate value of these securities was $12,652,790, representing 0.8% of net assets.

(v) Affiliated issuer that is available only to investment companies managed by MFS. The rate quoted for the MFS Institutional Money Market Portfolio is the annualized
seven-day yield of the fund at period end.

------

Portfolio of Investments (unaudited) – continued

---

| | |
|:---|:---|
| The following abbreviations are used in this report and are defined: | The following abbreviations are used in this report and are defined: |
| AGM | Assured Guaranty Municipal |
| FLR | Floating Rate. Interest rate resets periodically based on the parenthetically disclosed reference rate plus a spread (if any). The period-end rate reported may not be the current rate. All reference rates are USD unless otherwise noted. |
| LIBOR | London Interbank Offered Rate |
| SOFR | Secured Overnight Financing Rate |

---

---

| | | | | | | |
|:---|:---|:---|:---|:---|:---|:---|
| **Derivative Contracts at 1/31/23** | **Derivative Contracts at 1/31/23** | **Derivative Contracts at 1/31/23** | **Derivative Contracts at 1/31/23** | **Derivative Contracts at 1/31/23** | **Derivative Contracts at 1/31/23** | **Derivative Contracts at 1/31/23** |
| **Futures Contracts** | **Futures Contracts** | **Futures Contracts** | **Futures Contracts** | **Futures Contracts** | **Futures Contracts** | **Futures Contracts** |
| **Description** | &nbsp;&nbsp;**Long/<br> Short** | &nbsp;&nbsp;**Currency** | &nbsp;&nbsp;**Contracts** | &nbsp;&nbsp;**Notional<br> Amount** | &nbsp;&nbsp;**Expiration<br> Date** | &nbsp;&nbsp;**Value/Unrealized<br> Appreciation<br> (Depreciation)** |
| **Liability Derivatives** | **Liability Derivatives** | **Liability Derivatives** | **Liability Derivatives** | **Liability Derivatives** | **Liability Derivatives** | **Liability Derivatives** |
| ***Interest Rate Futures*** | ***Interest Rate Futures*** | ***Interest Rate Futures*** | ***Interest Rate Futures*** | ***Interest Rate Futures*** |  |  |
| U.S. Treasury Note 10 yr | &nbsp;&nbsp;Long | &nbsp;&nbsp;USD | &nbsp;&nbsp;361 | &nbsp;&nbsp;$41340141 | &nbsp;&nbsp;March – 2023 | &nbsp;&nbsp;$(143216) |
| U.S. Treasury Note 5 yr | &nbsp;&nbsp;Long | &nbsp;&nbsp;USD | &nbsp;&nbsp;724 | &nbsp;&nbsp;79091344 | &nbsp;&nbsp;March – 2023 | &nbsp;&nbsp;&nbsp;&nbsp;(215012) |
|  |  |  |  |  |  | &nbsp;&nbsp;$(358228) |

---

At January 31, 2023, the fund had liquid securities with an aggregate value of $688,718 to cover any collateral or margin obligations for certain derivative contracts.

See attached supplemental information. For more information see notes to financial statements as disclosed in the most recent semiannual or annual report.

------

### Supplemental Information
1/31/23 (unaudited)

The fund is an investment company and accordingly follows the investment company accounting and reporting guidance of the Financial Accounting Standards Board (FASB) Accounting Standards Codification Topic 946 Financial Services - Investment Companies.

(1) Investment Valuations

Subject to its oversight, the fund's Board of Trustees has delegated primary responsibility for determining or causing to be determined the value of the fund's investments to MFS as the fund's adviser, pursuant to the fund's valuation policy and procedures which have been adopted by the adviser and approved by the Board. Effective September 8, 2022, and in accordance with Rule 2a-5 under the Investment Company Act of 1940, the Board of Trustees designated the adviser as the "valuation designee" of the fund. If the adviser, as valuation designee, determines that reliable market quotations are not readily available for an investment, the investment is valued at fair value as determined in good faith by the adviser in accordance with the adviser's fair valuation policy and procedures.

Under the fund's valuation policy and procedures, debt instruments and floating rate loans, including restricted debt instruments, are generally valued at an evaluated or composite bid as provided by a third-party pricing service. Short-term instruments with a maturity at issuance of 60 days or less may be valued at amortized cost, which approximates market value. Futures contracts are generally valued at last posted settlement price on their primary exchange as provided by a third-party pricing service. Futures contracts for which there were no trades that day for a particular position are generally valued at the closing bid quotation on their primary exchange as provided by a third-party pricing service. Open-end investment companies are generally valued at net asset value per share. The values of foreign securities and other assets and liabilities expressed in foreign currencies are converted to U.S. dollars using the mean of bid and asked prices for rates provided by a third-party pricing service.

Under the fund's valuation policy and procedures, market quotations are not considered to be readily available for debt instruments, floating rate loans, and many types of derivatives. These investments are generally valued at fair value based on information from third-party pricing services or otherwise determined by the adviser in accordance with the adviser's fair valuation policy and procedures. Securities and other assets generally valued on the basis of information from a third-party pricing service may also be valued at a broker/dealer bid quotation. In determining values, third-party pricing services can utilize both transaction data and market information such as yield, quality, coupon rate, maturity, type of issue, trading characteristics, spreads and other market data. An investment may also be valued at fair value if the adviser determines that the investment's value has been materially affected by events occurring after the close of the exchange or market on which the investment is principally traded (such as foreign exchange or market) and prior to the determination of the fund's net asset value, or after the halt of trading of a specific security where trading does not resume prior to the close of the exchange or market on which the security is principally traded. The adviser generally relies on third-party pricing services or other information (such as the correlation with price movements of similar securities in the same or other markets; the type, cost and investment characteristics of the security; the business and financial condition of the issuer; and trading and other market data) to assist in determining whether to fair value and at what value to fair value an investment. The value of an investment for purposes of calculating the fund's net asset value can differ depending on the source and method used to determine value. When fair valuation is used, the value of an investment used to determine the fund's net asset value may differ from quoted or published prices for the same investment. There can be no assurance that the fund could obtain the fair value assigned to an investment if it were to sell the investment at the same time at which the fund determines its net asset value per share.

Various inputs are used in determining the value of the fund's assets or liabilities. These inputs are categorized into three broad levels. In certain cases, the inputs used to measure fair value may fall into different levels of the fair value hierarchy. In such cases, an investment's level within the fair value hierarchy is based on the lowest level of input that is significant to the fair value measurement. The fund's assessment of the significance of a particular input to the fair value measurement in its entirety requires judgment, and considers factors specific to the investment. Level 1 includes unadjusted quoted prices in active markets for identical assets or liabilities. Level 2 includes other significant observable market-based inputs (including quoted prices for similar securities, interest rates, prepayment speed, and credit risk). Level 3 includes significant unobservable inputs, which may include the adviser's own assumptions in determining the fair value of investments. Other financial instruments are derivative instruments, such as futures contracts. The following is a summary of the levels used as of January 31, 2023 in valuing the fund's assets and liabilities:

---

| | | | | |
|:---|:---|:---|:---|:---|
| **Financial Instruments** | &nbsp;&nbsp;&nbsp;**Level 1** | &nbsp;&nbsp;&nbsp;**Level 2** | &nbsp;&nbsp;&nbsp;**Level 3** | &nbsp;&nbsp;&nbsp;**Total** |
| U.S. Treasury Bonds & U.S. Government Agencies & Equivalents | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;$— | &nbsp;&nbsp;&nbsp;$1451803681 | &nbsp;&nbsp;&nbsp;$— | &nbsp;&nbsp;&nbsp;$1451803681 |
| Municipal Bonds | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;— | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;20218008 | &nbsp;&nbsp;&nbsp;&nbsp;— | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;20218008 |
| U.S. Corporate Bonds | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;— | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;9329660 | &nbsp;&nbsp;&nbsp;&nbsp;— | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;9329660 |
| Residential Mortgage-Backed Securities | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;— | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;10240295 | &nbsp;&nbsp;&nbsp;&nbsp;— | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;10240295 |
| Commercial Mortgage-Backed Securities | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;— | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;23737764 | &nbsp;&nbsp;&nbsp;&nbsp;— | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;23737764 |
| Asset-Backed Securities (including CDOs) | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;— | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;2969442 | &nbsp;&nbsp;&nbsp;&nbsp;— | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;2969442 |
| Mutual Funds | &nbsp;&nbsp;&nbsp;&nbsp;3344388 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;— | &nbsp;&nbsp;&nbsp;&nbsp;— | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;3344388 |
| Total | &nbsp;&nbsp;&nbsp;$3344388 | &nbsp;&nbsp;&nbsp;$1518298850 | &nbsp;&nbsp;&nbsp;$— | &nbsp;&nbsp;&nbsp;$1521643238 |
| **Other Financial Instruments** |  |  |  |  |
| Futures Contracts – Liabilities | &nbsp;&nbsp;&nbsp;&nbsp;$(358228) | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;$— | &nbsp;&nbsp;&nbsp;$— | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;$(358228) |

---

For further information regarding security characteristics, see the Portfolio of Investments.

------

Supplemental Information (unaudited) – continued

(2) Investments in Affiliated Issuers

An affiliated issuer may be considered one in which the fund owns 5% or more of the outstanding voting securities, or a company which is under common control. For the purposes of this report, the following were affiliated issuers:

---

| | | | | | | |
|:---|:---|:---|:---|:---|:---|:---|
| **Affiliated Issuers** | &nbsp;&nbsp;**Beginning<br> Value** | &nbsp;&nbsp;**Purchases** | &nbsp;&nbsp;**Sales<br> Proceeds** | &nbsp;&nbsp;**Realized<br> Gain<br> (Loss)** | &nbsp;&nbsp;**Change in<br> Unrealized<br> Appreciation or<br> Depreciation** | &nbsp;&nbsp;**Ending<br> Value** |
| MFS Institutional Money Market Portfolio | &nbsp;&nbsp;$1750415 | &nbsp;&nbsp;$63494329 | &nbsp;&nbsp;$61898635 | &nbsp;&nbsp;$(2059) | &nbsp;&nbsp;$338 | &nbsp;&nbsp;$3344388 |

---

---

| | | |
|:---|:---|:---|
| **Affiliated Issuers** | &nbsp;&nbsp;**Dividend<br> Income** | &nbsp;&nbsp;**Capital Gain<br> Distributions** |
| MFS Institutional Money Market Portfolio | &nbsp;&nbsp;$53616 | &nbsp;&nbsp;$— |

---

## Form NPORT-P: Monthly Portfolio Investments Report

### NPORT-P: Part A: General Information

**Item A.1. Information about the Registrant.**

- **a. Name of Registrant:** MFS SERIES TRUST IX

- **b. Investment Company Act file number:** 811-02464

- **c. CIK number of Registrant:** 0000063075

- **d. LEI of Registrant:** 549300IJONSVWD5I9F62

- **e. Address and telephone number of Registrant.**

  - **Street Address 1:** 111 HUNTINGTON AVENUE

  - **City:** BOSTON

  - **State:** MA

  - **Foreign country:** US

  - **Zip / Postal Code:** 02199

  - **Telephone number:** 617-954-5000

**Item A.2. Information about the Series.**

- **a. Name of Series:** MFS Inflation-Adjusted Bond Fund

- **b. EDGAR series identifier (if any):** S000002493

- **c. LEI of Series:** VOHO802M9IKG3IZTEN75

**Item A.3. Reporting period.**

- **a. Date of fiscal year-end:** 2023-10-31

- **b. Date as of which information is reported:** 2023-01-31

**Item A.4. Final filing**

Does the Fund anticipate that this will be its final filing on Form N-PORT? **No**

### Fund Information

**Total Assets:** $1524796588.11

**Total Liabilities:** $852923.37

**Net Assets:** $1523943664.74

**Cash Not Reported:** $432198.80

**Currency Risk Metrics (dv01):**

- 

**Credit Spread Risk - Investment Grade (dv01):**

- **3-Month:** -130.90000000 | **1-Year:** -2495.83000000 | **5-Year:** -7484.29000000 | **10-Year:** -9279.76000000 | **30-Year:** -2306.47000000

**Credit Spread Risk - Non-Investment Grade (dv01):**

- **3-Month:** -37.98000000 | **1-Year:** -562.07000000 | **5-Year:** -1755.06000000 | **10-Year:** -601.58000000 | **30-Year:** 0.00000000

**Monthly Return Information**

| Class               | Month 1 Return (%)   | Month 2 Return (%)   | Month 3 Return (%)   |
|:---|:---|:---|:---|
| Class ID C000006724 | 1.92%                | -1.06%               | 1.84%                |
| Class ID C000006725 | 1.92%                | -1.01%               | 1.95%                |
| Class ID C000126364 | 1.91%                | -1.09%               | 1.94%                |
| Class ID C000006733 | 1.93%                | -1.08%               | 1.95%                |
| Class ID C000006728 | 1.92%                | -1.01%               | 1.95%                |
| Class ID C000006726 | 1.83%                | -1.07%               | 1.74%                |
| Class ID C000006732 | 1.93%                | -1.15%               | 1.85%                |
| Class ID C000006730 | 1.84%                | -1.09%               | 1.86%                |
| Class ID C000006727 | 1.83%                | -1.21%               | 1.86%                |

**Monthly Gains & Losses**

| Period   | Net Realized Gain/Loss   | Net Unrealized Appreciation/Depreciation   |
|:---|:---|:---|
| Month 1  | $-1959056.17             | $26605996.83                               |
| Month 2  | $-14100406.03            | $-9497373.37                               |
| Month 3  | $-5326478.10             | $34585864.82                               |

**Designated Index Information**

- **Index Name:** BBG US Treasury Infl Prot Sec Idx

- **Index Identifier:** LBUTTRUU

### Schedule of Portfolio Investments

| Name                                              | Title                                                             | Identifiers                                   | Payoff Profile   | Asset Category   | Issuer Category   | Country   |   Balance | Units   | Value (USD)   | % of Net Assets   | Maturity Date   | Coupon Type   | Annualized Rate (%)   | Restricted?   |   Fair Value Level | Lending Status   |
|:---|:---|:---|:---|:---|:---|:---|---:|:---|:---|:---|:---|:---|:---|:---|---:|:---|
| FHLMC Multifamily Structured Pass Through Certs.  | Freddie Mac Multifamily Structured Pass Through Certificates      | CUSIP: 3137F9ZC8<br>LEI: S6XOOCT0IEG5ABCC6L87 | Long             | ABS-MBS          | USGSE             | US        |  11388256 | PA      | $592491.10    | 0.04%             | 2031-01-25      | Variable      | 0.78%                 | No            |                  2 | On Loan: No      |
| United States Treasury                            | United States Treasury Inflation Indexed Bonds                    | CUSIP: 912810TE8<br>LEI: 254900HROIFWPRGM1V77 | Long             | DBT              | UST               | US        |  30051826 | PA      | $20718151.37  | 1.36%             | 2052-02-15      | Fixed         | 0.13%                 | No            |                  2 | On Loan: No      |
| Michigan Finance Authority                        | Michigan Finance Authority Student Loan Asset-Backed Notes 2021-1 | CUSIP: 59447TV83<br>LEI: N/A                  | Long             | ABS-O            | CORP              | US        |   2792663 | PA      | $2605507.71   | 0.17%             | 2061-07-25      | Fixed         | 1.30%                 | No            |                  2 | On Loan: No      |
| Tobacco Settlement Finance Authority              | TOBACCO SETTLEMENT FIN AUTH WV ASSET BACKED                       | CUSIP: 88880LAG8<br>LEI: N/A                  | Long             | DBT              | MUN               | US        |    835000 | PA      | $772914.41    | 0.05%             | 2025-06-01      | Fixed         | 1.65%                 | No            |                  2 | On Loan: No      |
| United States Treasury                            | United States Treasury Inflation Indexed Bonds                    | CUSIP: 912810SM1<br>LEI: 254900HROIFWPRGM1V77 | Long             | DBT              | UST               | US        |  10608023 | PA      | $7652694.22   | 0.50%             | 2050-02-15      | Fixed         | 0.25%                 | No            |                  2 | On Loan: No      |
| Chicago Transit Authority Sales Tax Receipts Fund | CHICAGO IL TRANSIT AUTH SALES TAX RECPTS REVENUE                  | CUSIP: 16772PCL8<br>LEI: N/A                  | Long             | DBT              | MUN               | US        |    392000 | PA      | $368640.45    | 0.02%             | 2025-12-01      | Fixed         | 2.21%                 | No            |                  2 | On Loan: No      |
| BENCHMARK Mortgage Trust                          | Benchmark 2021-B24 Mortgage Trust                                 | CUSIP: 08163CBE8<br>LEI: N/A                  | Long             | ABS-MBS          | CORP              | US        |  15475243 | PA      | $944867.28    | 0.06%             | 2054-03-15      | Variable      | 1.15%                 | No            |                  2 | On Loan: No      |
| AREIT CRE Trust                                   | AREIT 2022-CRE6 Trust                                             | CUSIP: 04002VAC5<br>LEI: N/A                  | Long             | ABS-MBS          | CORP              | KY        |   6662500 | PA      | $6272297.36   | 0.41%             | 2037-01-16      | Floating      | 5.96%                 | Yes           |                  2 | On Loan: No      |
| Toledo Hospital/The                               | Toledo Hospital/The                                               | CUSIP: 889184AD9<br>LEI: 5493009DCR7NWV6K4T34 | Long             | DBT              | CORP              | US        |    747000 | PA      | $751968.72    | 0.05%             | 2038-11-15      | Fixed         | 5.75%                 | No            |                  2 | On Loan: No      |
| Barclays Commercial Mortgage Securities LLC       | BBCMS Trust 2021-C10                                              | CUSIP: 05551VBK8<br>LEI: N/A                  | Long             | ABS-MBS          | CORP              | US        |  13307054 | PA      | $967142.05    | 0.06%             | 2054-07-15      | Variable      | 1.30%                 | No            |                  2 | On Loan: No      |
| Michigan Finance Authority                        | MICHIGAN ST FIN AUTH REVENUE                                      | CUSIP: 59447TH89<br>LEI: 54930022O46HOX5J1D14 | Long             | DBT              | MUN               | US        |    619743 | PA      | $593292.74    | 0.04%             | 2030-06-01      | Fixed         | 2.33%                 | No            |                  2 | On Loan: No      |
| FHLMC Multifamily Structured Pass Through Certs.  | Freddie Mac Multifamily Structured Pass Through Certificates      | CUSIP: 3137FXZ50<br>LEI: S6XOOCT0IEG5ABCC6L87 | Long             | ABS-MBS          | USGSE             | US        |  29806263 | PA      | $597955.36    | 0.04%             | 2031-01-25      | Variable      | 0.33%                 | No            |                  2 | On Loan: No      |
| Barclays Commercial Mortgage Securities LLC       | BBCMS Mortgage Trust 2021-C9                                      | CUSIP: 05493EAZ5<br>LEI: N/A                  | Long             | ABS-MBS          | CORP              | US        |   8088861 | PA      | $734857.64    | 0.05%             | 2054-02-15      | Variable      | 1.62%                 | No            |                  2 | On Loan: No      |
| Wells Fargo Commercial Mortgage Trust             | Wells Fargo Commercial Mortgage Trust 2021-C60                    | CUSIP: 95003DBP2<br>LEI: N/A                  | Long             | ABS-MBS          | CORP              | US        |   9509357 | PA      | $842376.87    | 0.06%             | 2054-08-15      | Variable      | 1.55%                 | No            |                  2 | On Loan: No      |
| Colorado Health Facilities Authority              | COLORADO ST HLTH FACS AUTH REVENUE                                | CUSIP: 19648FRX4<br>LEI: 5493002JB6DRFRZPEQ21 | Long             | DBT              | MUN               | US        |    825000 | PA      | $777399.32    | 0.05%             | 2026-12-01      | Fixed         | 2.80%                 | No            |                  2 | On Loan: No      |
| United States Treasury                            | United States Treasury Inflation Indexed Bonds                    | CUSIP: 912810RL4<br>LEI: 254900HROIFWPRGM1V77 | Long             | DBT              | UST               | US        |  47866148 | PA      | $40779246.84  | 2.68%             | 2045-02-15      | Fixed         | 0.75%                 | No            |                  2 | On Loan: No      |
| PFP III                                           | PFP 2021-8 Ltd                                                    | CUSIP: 69357XAC5<br>LEI: N/A                  | Long             | ABS-CBDO         | CORP              | KY        |   3622500 | PA      | $3411051.05   | 0.22%             | 2037-08-09      | Floating      | 5.70%                 | Yes           |                  2 | On Loan: No      |
| FHLMC Multifamily Structured Pass Through Certs.  | Freddie Mac Multifamily Structured Pass Through Certificates      | CUSIP: 3137H3EZ1<br>LEI: S6XOOCT0IEG5ABCC6L87 | Long             | ABS-MBS          | USGSE             | US        |   9783880 | PA      | $578518.87    | 0.04%             | 2031-09-25      | Variable      | 0.86%                 | No            |                  2 | On Loan: No      |
| United States Treasury                            | United States Treasury Inflation Indexed Bonds                    | CUSIP: 912810FR4<br>LEI: 254900HROIFWPRGM1V77 | Long             | DBT              | UST               | US        |  41348692 | PA      | $41535514.90  | 2.73%             | 2025-01-15      | Fixed         | 2.38%                 | No            |                  2 | On Loan: No      |
| FHLMC Multifamily Structured Pass Through Certs.  | Freddie Mac Multifamily Structured Pass Through Certificates      | CUSIP: 3137F9Z38<br>LEI: S6XOOCT0IEG5ABCC6L87 | Long             | ABS-MBS          | USGSE             | US        |   8529316 | PA      | $516253.91    | 0.03%             | 2031-01-25      | Variable      | 0.94%                 | No            |                  2 | On Loan: No      |
| United States Treasury                            | United States Treasury Inflation Indexed Bonds                    | CUSIP: 912810SV1<br>LEI: 254900HROIFWPRGM1V77 | Long             | DBT              | UST               | US        |  28627522 | PA      | $19750754.14  | 1.30%             | 2051-02-15      | Fixed         | 0.13%                 | No            |                  2 | On Loan: No      |
| Bank                                              | BANK 2021-BNK31                                                   | CUSIP: 06541ABM1<br>LEI: N/A                  | Long             | ABS-MBS          | CORP              | US        |  19527594 | PA      | $1472554.35   | 0.10%             | 2054-02-15      | Variable      | 1.32%                 | No            |                  2 | On Loan: No      |
| BENCHMARK Mortgage Trust                          | Benchmark 2021-B23 Mortgage Trust                                 | CUSIP: 08162RAF4<br>LEI: N/A                  | Long             | ABS-MBS          | CORP              | US        |  25454931 | PA      | $1720903.49   | 0.11%             | 2054-02-15      | Variable      | 1.27%                 | No            |                  2 | On Loan: No      |
| Chicago Board of Trade                            | US 10YR NOTE (CBT)MAR23                                           | CUSIP: 000000000<br>LEI: 549300EX04Q2QBFQTQ27 | N/A              | DIR              |  | US        |       110 | NC      | $-134461.80   | -0.01%            |  |  |  | No            |                  1 | On Loan: No      |
| United States Treasury                            | United States Treasury Inflation Indexed Bonds                    | CUSIP: 912810FD5<br>LEI: 254900HROIFWPRGM1V77 | Long             | DBT              | UST               | US        |  52015776 | PA      | $57656236.84  | 3.78%             | 2028-04-15      | Fixed         | 3.63%                 | No            |                  2 | On Loan: No      |
| United States Treasury                            | United States Treasury Inflation Indexed Bonds                    | CUSIP: 912810FS2<br>LEI: 254900HROIFWPRGM1V77 | Long             | DBT              | UST               | US        |  81908862 | PA      | $82403194.88  | 5.41%             | 2026-01-15      | Fixed         | 2.00%                 | No            |                  2 | On Loan: No      |
| Massachusetts Educational Financing Authority     | MASSACHUSETTS ST EDUCTNL FING AUTH                                | CUSIP: 57563RRZ4<br>LEI: 5493007K5OP7V6CL0Y88 | Long             | DBT              | MUN               | US        |   7720000 | PA      | $7077649.68   | 0.46%             | 2037-07-01      | Fixed         | 2.64%                 | No            |                  2 | On Loan: No      |
| Golden State Tobacco Securitization Corp          | GOLDEN ST TOBACCO SECURITIZATION CORP CA TOBACCO SETTLEMENT       | CUSIP: 38122NB76<br>LEI: N/A                  | Long             | DBT              | MUN               | US        |   2690000 | PA      | $2501537.79   | 0.16%             | 2046-06-01      | Fixed         | 3.00%                 | No            |                  2 | On Loan: No      |
| United States Treasury                            | United States Treasury Inflation Indexed Bonds                    | CUSIP: 912810RA8<br>LEI: 254900HROIFWPRGM1V77 | Long             | DBT              | UST               | US        |  36408703 | PA      | $30757176.53  | 2.02%             | 2043-02-15      | Fixed         | 0.63%                 | No            |                  2 | On Loan: No      |
| FHLMC Multifamily Structured Pass Through Certs.  | Freddie Mac Multifamily Structured Pass Through Certificates      | CUSIP: 3137FUZZ0<br>LEI: S6XOOCT0IEG5ABCC6L87 | Long             | ABS-MBS          | USGSE             | US        |   6326494 | PA      | $627504.70    | 0.04%             | 2030-05-25      | Variable      | 1.67%                 | No            |                  2 | On Loan: No      |
| FHLMC Multifamily Structured Pass Through Certs.  | Freddie Mac Multifamily Structured Pass Through Certificates      | CUSIP: 3137FYUL8<br>LEI: S6XOOCT0IEG5ABCC6L87 | Long             | ABS-MBS          | USGSE             | US        |  36417520 | PA      | $1183583.97   | 0.08%             | 2031-03-25      | Variable      | 0.52%                 | No            |                  2 | On Loan: No      |
| BENCHMARK Mortgage Trust                          | Benchmark 2021-B28 Mortgage Trust                                 | CUSIP: 08163GAZ3<br>LEI: N/A                  | Long             | ABS-MBS          | CORP              | US        |  25418842 | PA      | $1843559.99   | 0.12%             | 2054-08-15      | Variable      | 1.28%                 | No            |                  2 | On Loan: No      |
| United States Treasury                            | United States Treasury Inflation Indexed Bonds                    | CUSIP: 912828V49<br>LEI: 254900HROIFWPRGM1V77 | Long             | DBT              | UST               | US        |  38080549 | PA      | $36386262.06  | 2.39%             | 2027-01-15      | Fixed         | 0.38%                 | No            |                  2 | On Loan: No      |
| United States Treasury                            | United States Treasury Inflation Indexed Bonds                    | CUSIP: 912810QV3<br>LEI: 254900HROIFWPRGM1V77 | Long             | DBT              | UST               | US        |  97209998 | PA      | $84864139.10  | 5.57%             | 2042-02-15      | Fixed         | 0.75%                 | No            |                  2 | On Loan: No      |
| California Earthquake Authority                   | CALIFORNIA ST EARTHQUAKE AUTH                                     | CUSIP: 13017HAK2<br>LEI: 254900P2MGLOUH3QS859 | Long             | DBT              | MUN               | US        |   1310000 | PA      | $1290435.81   | 0.08%             | 2023-07-01      | Fixed         | 1.48%                 | No            |                  2 | On Loan: No      |
| Chicago Board of Trade                            | US 5YR NOTE (CBT) MAR23                                           | CUSIP: 000000000<br>LEI: 549300EX04Q2QBFQTQ27 | N/A              | DIR              |  | US        |       341 | NC      | $-201522.13   | -0.01%            |  |  |  | No            |                  1 | On Loan: No      |
| United States Treasury                            | United States Treasury Inflation Indexed Bonds                    | CUSIP: 9128282L3<br>LEI: 254900HROIFWPRGM1V77 | Long             | DBT              | UST               | US        |  86089758 | PA      | $82378818.98  | 5.41%             | 2027-07-15      | Fixed         | 0.38%                 | No            |                  2 | On Loan: No      |
| FHLMC Multifamily Structured Pass Through Certs.  | Freddie Mac Multifamily Structured Pass Through Certificates      | CUSIP: 3137H2NA8<br>LEI: S6XOOCT0IEG5ABCC6L87 | Long             | ABS-MBS          | USGSE             | US        |   7521262 | PA      | $486042.00    | 0.03%             | 2031-07-25      | Variable      | 0.94%                 | No            |                  2 | On Loan: No      |
| Morgan Stanley Capital I Trust                    | Morgan Stanley Capital I Trust 2021-L7                            | CUSIP: 61772TBN3<br>LEI: N/A                  | Long             | ABS-MBS          | CORP              | US        |  27597056 | PA      | $1646048.49   | 0.11%             | 2054-10-15      | Variable      | 1.10%                 | No            |                  2 | On Loan: No      |
| School District of Philadelphia/The               | PHILADELPHIA PA SCH DIST                                          | CUSIP: 717883UB6<br>LEI: 254900HSKDHZKBZCUL90 | Long             | DBT              | MUN               | US        |   1925000 | PA      | $2075759.65   | 0.14%             | 2030-09-01      | Fixed         | 6.00%                 | No            |                  2 | On Loan: No      |
| FHLMC Multifamily Structured Pass Through Certs.  | Freddie Mac Multifamily Structured Pass Through Certificates      | CUSIP: 3137H4BT6<br>LEI: S6XOOCT0IEG5ABCC6L87 | Long             | ABS-MBS          | USGSE             | US        |  32486236 | PA      | $1246675.55   | 0.08%             | 2031-09-25      | Variable      | 0.54%                 | No            |                  2 | On Loan: No      |
| 3650R Commercial Mortgage Trust                   | 3650R 2021-PF1 Commercial Mortgage Trust                          | CUSIP: 88581EAF8<br>LEI: N/A                  | Long             | ABS-MBS          | CORP              | US        |  14738831 | PA      | $835721.17    | 0.05%             | 2054-11-15      | Variable      | 1.03%                 | No            |                  2 | On Loan: No      |
| MFS Institutional Money Market Portfolio          | MFS Institutional Money Market Portfolio                          | CUSIP: 55291X109<br>LEI: 5L2W638H85N8T1136O07 | Long             | STIV             | RF                | US        |   3328998 | NS      | $3329330.74   | 0.22%             |  |  |  | No            |                  1 | On Loan: No      |
| FHLMC Multifamily Structured Pass Through Certs.  | Freddie Mac Multifamily Structured Pass Through Certificates      | CUSIP: 3137H13T1<br>LEI: S6XOOCT0IEG5ABCC6L87 | Long             | ABS-MBS          | USGSE             | US        |   4421663 | PA      | $355801.94    | 0.02%             | 2031-05-25      | Variable      | 1.22%                 | No            |                  2 | On Loan: No      |
| New Jersey Turnpike Authority                     | NEW JERSEY ST TURNPIKE AUTH TURNPIKE REVENUE                      | CUSIP: 646140DP5<br>LEI: 5493005YN67D71KSMI84 | Long             | DBT              | MUN               | US        |    745000 | PA      | $681256.46    | 0.04%             | 2026-01-01      | Fixed         | 1.05%                 | No            |                  2 | On Loan: No      |
| HOWARD UNIVERSITY                                 | Howard University                                                 | CUSIP: 442851AG6<br>LEI: N/A                  | Long             | DBT              | CORP              | US        |    402000 | PA      | $379112.80    | 0.02%             | 2025-10-01      | Fixed         | 2.52%                 | No            |                  2 | On Loan: No      |
| Tobacco Settlement Finance Authority              | TOBACCO SETTLEMENT FIN AUTH WV ASSET BACKED                       | CUSIP: 88880LAF0<br>LEI: N/A                  | Long             | DBT              | MUN               | US        |   1020000 | PA      | $973032.37    | 0.06%             | 2024-06-01      | Fixed         | 1.50%                 | No            |                  2 | On Loan: No      |
| United States Treasury                            | United States Treasury Inflation Indexed Bonds                    | CUSIP: 91282CBF7<br>LEI: 254900HROIFWPRGM1V77 | Long             | DBT              | UST               | US        | 137128210 | PA      | $125126813.15 | 8.21%             | 2031-01-15      | Fixed         | 0.13%                 | No            |                  2 | On Loan: No      |
| Morgan Stanley Capital I Trust                    | Morgan Stanley Capital I Trust 2021-L6                            | CUSIP: 61692CBK3<br>LEI: N/A                  | Long             | ABS-MBS          | CORP              | US        |  12924964 | PA      | $820312.58    | 0.05%             | 2054-06-15      | Variable      | 1.23%                 | No            |                  2 | On Loan: No      |
| Morgan Stanley Capital I Trust                    | Morgan Stanley Capital I Trust 2021-L5                            | CUSIP: 61691YAP6<br>LEI: N/A                  | Long             | ABS-MBS          | CORP              | US        |  10264564 | PA      | $710251.38    | 0.05%             | 2054-05-15      | Variable      | 1.30%                 | No            |                  2 | On Loan: No      |
| United States Treasury                            | United States Treasury Inflation Indexed Bonds                    | CUSIP: 912810PV4<br>LEI: 254900HROIFWPRGM1V77 | Long             | DBT              | UST               | US        |  17602918 | PA      | $17894638.27  | 1.17%             | 2028-01-15      | Fixed         | 1.75%                 | No            |                  2 | On Loan: No      |
| Chicago Transit Authority Sales Tax Receipts Fund | CHICAGO IL TRANSIT AUTH SALES TAX RECPTS REVENUE                  | CUSIP: 16772PCK0<br>LEI: N/A                  | Long             | DBT              | MUN               | US        |    523000 | PA      | $500581.81    | 0.03%             | 2024-12-01      | Fixed         | 2.06%                 | No            |                  2 | On Loan: No      |
| FHLMC Multifamily Structured Pass Through Certs.  | Freddie Mac Multifamily Structured Pass Through Certificates      | CUSIP: 3137FTG43<br>LEI: S6XOOCT0IEG5ABCC6L87 | Long             | ABS-MBS          | USGSE             | US        |   3519182 | PA      | $375707.17    | 0.02%             | 2030-04-25      | Variable      | 1.80%                 | No            |                  2 | On Loan: No      |
| United States Treasury                            | United States Treasury Inflation Indexed Bonds                    | CUSIP: 9128283R9<br>LEI: 254900HROIFWPRGM1V77 | Long             | DBT              | UST               | US        |  22812373 | PA      | $21831262.74  | 1.43%             | 2028-01-15      | Fixed         | 0.50%                 | No            |                  2 | On Loan: No      |
| United States Treasury                            | United States Treasury Inflation Indexed Bonds                    | CUSIP: 9128285W6<br>LEI: 254900HROIFWPRGM1V77 | Long             | DBT              | UST               | US        | 122022387 | PA      | $118746610.33 | 7.79%             | 2029-01-15      | Fixed         | 0.88%                 | No            |                  2 | On Loan: No      |
| TOLEDO HOSPITAL/THE                               | Toledo Hospital/The                                               | CUSIP: 889184AF4<br>LEI: 5493009DCR7NWV6K4T34 | Long             | DBT              | CORP              | US        |   2421000 | PA      | $2448768.39   | 0.16%             | 2028-11-15      | Fixed         | 5.33%                 | No            |                  2 | On Loan: No      |
| United States Treasury                            | United States Treasury Inflation Indexed Bonds                    | CUSIP: 912828B25<br>LEI: 254900HROIFWPRGM1V77 | Long             | DBT              | UST               | US        |  73860457 | PA      | $72414023.26  | 4.75%             | 2024-01-15      | Fixed         | 0.63%                 | No            |                  2 | On Loan: No      |
| FHLMC Multifamily Structured Pass Through Certs.  | Freddie Mac Multifamily Structured Pass Through Certificates      | CUSIP: 3137H4SM3<br>LEI: S6XOOCT0IEG5ABCC6L87 | Long             | ABS-MBS          | USGSE             | US        |   8215224 | PA      | $328604.85    | 0.02%             | 2031-12-25      | Variable      | 0.57%                 | No            |                  2 | On Loan: No      |
| United States Treasury                            | United States Treasury Inflation Indexed Bonds                    | CUSIP: 912810SB5<br>LEI: 254900HROIFWPRGM1V77 | Long             | DBT              | UST               | US        |  20753143 | PA      | $18392270.40  | 1.21%             | 2048-02-15      | Fixed         | 1.00%                 | No            |                  2 | On Loan: No      |
| FHLMC Multifamily Structured Pass Through Certs.  | Freddie Mac Multifamily Structured Pass Through Certificates      | CUSIP: 3137F62R7<br>LEI: S6XOOCT0IEG5ABCC6L87 | Long             | ABS-MBS          | USGSE             | US        |   3529812 | PA      | $257062.44    | 0.02%             | 2030-09-25      | Variable      | 1.17%                 | No            |                  2 | On Loan: No      |
| FHLMC Multifamily Structured Pass Through Certs.  | Freddie Mac Multifamily Structured Pass Through Certificates      | CUSIP: 3137H4CH1<br>LEI: S6XOOCT0IEG5ABCC6L87 | Long             | ABS-MBS          | USGSE             | US        |  49721062 | PA      | $1288750.04   | 0.08%             | 2031-11-25      | Variable      | 0.35%                 | No            |                  2 | On Loan: No      |
| PACIFIC GAS & ELECTRIC                            | Pacific Gas and Electric Co                                       | CUSIP: 694308KA4<br>LEI: 1HNPXZSMMB7HMBMVBS46 | Long             | DBT              | CORP              | US        |   4253000 | PA      | $4174502.89   | 0.27%             | 2024-02-16      | Fixed         | 3.25%                 | No            |                  2 | On Loan: No      |
| BSPDF 2021-FL1 Issuer Ltd                         | BSPDF 2021-FL1 Issuer Ltd                                         | CUSIP: 055731AC7<br>LEI: N/A                  | Long             | ABS-CBDO         | CORP              | KY        |   3056500 | PA      | $2969441.71   | 0.19%             | 2036-10-15      | Floating      | 5.93%                 | Yes           |                  2 | On Loan: No      |
| United States Treasury                            | United States Treasury Inflation Indexed Bonds                    | CUSIP: 91282CDX6<br>LEI: 254900HROIFWPRGM1V77 | Long             | DBT              | UST               | US        | 108471980 | PA      | $97935156.13  | 6.43%             | 2032-01-15      | Fixed         | 0.13%                 | No            |                  2 | On Loan: No      |
| United States Treasury                            | United States Treasury Inflation Indexed Bonds                    | CUSIP: 912828N71<br>LEI: 254900HROIFWPRGM1V77 | Long             | DBT              | UST               | US        | 128767375 | PA      | $124558962.20 | 8.17%             | 2026-01-15      | Fixed         | 0.63%                 | No            |                  2 | On Loan: No      |
| United States Treasury                            | United States Treasury Inflation Indexed Bonds                    | CUSIP: 912828H45<br>LEI: 254900HROIFWPRGM1V77 | Long             | DBT              | UST               | US        | 199035192 | PA      | $192002874.68 | 12.60%            | 2025-01-15      | Fixed         | 0.25%                 | No            |                  2 | On Loan: No      |
| FHLMC Multifamily Structured Pass Through Certs.  | Freddie Mac Multifamily Structured Pass Through Certificates      | CUSIP: 3137H5DT1<br>LEI: S6XOOCT0IEG5ABCC6L87 | Long             | ABS-MBS          | USGSE             | US        |  50485813 | PA      | $1805342.38   | 0.12%             | 2031-12-25      | Variable      | 0.50%                 | No            |                  2 | On Loan: No      |
| United States Treasury                            | United States Treasury Inflation Indexed Bonds                    | CUSIP: 912828ZZ6<br>LEI: 254900HROIFWPRGM1V77 | Long             | DBT              | UST               | US        | 101630529 | PA      | $93408777.75  | 6.13%             | 2030-07-15      | Fixed         | 0.13%                 | No            |                  2 | On Loan: No      |
| BENCHMARK Mortgage Trust                          | Benchmark 2021-B27 Mortgage Trust                                 | CUSIP: 08163HAG3<br>LEI: N/A                  | Long             | ABS-MBS          | CORP              | US        |  20996696 | PA      | $1515820.79   | 0.10%             | 2054-07-15      | Variable      | 1.27%                 | No            |                  2 | On Loan: No      |
| United States Treasury                            | United States Treasury Inflation Indexed Bonds                    | CUSIP: 912828XL9<br>LEI: 254900HROIFWPRGM1V77 | Long             | DBT              | UST               | US        |  66797323 | PA      | $64610102.30  | 4.24%             | 2025-07-15      | Fixed         | 0.38%                 | No            |                  2 | On Loan: No      |
| HOWARD UNIVERSITY                                 | Howard University                                                 | CUSIP: 442851AF8<br>LEI: N/A                  | Long             | DBT              | CORP              | US        |    325000 | PA      | $308542.08    | 0.02%             | 2024-10-01      | Fixed         | 2.42%                 | No            |                  2 | On Loan: No      |
| CONSERVATION FUND                                 | Conservation Fund A Nonprofit Corp/The                            | CUSIP: 20848FAA8<br>LEI: N/A                  | Long             | DBT              | CORP              | US        |   1438000 | PA      | $1266765.07   | 0.08%             | 2029-12-15      | Fixed         | 3.47%                 | No            |                  2 | On Loan: No      |

### Signature

**Date Signed:** 2023-02-22

**Name of Applicant:** MFS SERIES TRUST IX

**Signature:** Kasey Phillips

**Name of Signer:** Kasey Phillips

**Title:** Assistant Treasurer