# EDGAR Filing Document

**Accession Number:** 0000798244
**File Stem:** 0001752724-23-009171
**Filing Date:** 2023-1
**Character Count:** 55430
**Document Hash:** b638e16cebc34b8b556e3b3f30f50d86
**Contains OCR:** False
**Source Format:** 

## Filing Content

## Filing Summary
**0001752724-23-009171.hdr.sgml**: 20230124

**ACCESSION NUMBER**: 0001752724-23-009171

**CONFORMED SUBMISSION TYPE**: NPORT-P

**PUBLIC DOCUMENT COUNT**: 4

**CONFORMED PERIOD OF REPORT**: 20221130

**FILED AS OF DATE**: 20230124

**DATE AS OF CHANGE**: 20230124

**PERIOD START**: 20230831

**FILER**: 

**COMPANY DATA:**
- **COMPANY CONFORMED NAME:** MFS SERIES TRUST I
- **CENTRAL INDEX KEY:** 0000798244
- **IRS NUMBER:** 000000000
- **STATE OF INCORPORATION:** MA
- **FISCAL YEAR END:** 1130

**FILING VALUES:**
- **FORM TYPE:** NPORT-P
- **SEC ACT:** 1940 Act
- **SEC FILE NUMBER:** 811-04777
- **FILM NUMBER:** 23546024

**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 I /MA/
- **DATE OF NAME CHANGE:** 19940427

**FORMER COMPANY:**
- **FORMER CONFORMED NAME:** MFS LIFETIME MANAGED SECTORS FUND
- **DATE OF NAME CHANGE:** 19930408

**FORMER COMPANY:**
- **FORMER CONFORMED NAME:** LIFETIME MANAGED SECTORS TRUST
- **DATE OF NAME CHANGE:** 19920703

## Series and Classes Contracts Data

### MFS Technology Fund (Series ID: S000000768)

| Class ID   | Class Name   | Ticker Symbol   |
|:---|:---|:---|
| C000002249 | A            | MTCAX           |
| C000002250 | R4           | MTCJX           |
| C000002251 | B            | MTCBX           |
| C000002252 | C            | MTCCX           |
| C000002253 | I            | MTCIX           |
| C000002255 | R1           | MTCKX           |
| C000002257 | R2           | MTERX           |
| C000002258 | R3           | MTCHX           |
| C000124425 | R6           | MTCLX           |

## Nport-Ex

![](imgbc53b0181.gif)

### Quarterly Report
November 30, 2022

MFS<sup>®</sup> Technology Fund

![](imge71c8e5c2.gif)

SCT-Q1

------

### Portfolio of Investments
11/30/22 (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 ($)** |
| Common Stocks – 96.8% | Common Stocks – 96.8% | Common Stocks – 96.8% |
| Brokerage & Asset Managers – 2.2% | Brokerage & Asset Managers – 2.2% |  |
| Charles Schwab Corp. | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;193898 | $16004341 |
| CME Group, Inc. | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;39816 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;7027524 |
| Tradeweb Markets, Inc. | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;85701 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;5267183 |
|  |  | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;$28299048 |
| Business Services – 16.2% | Business Services – 16.2% |  |
| Accenture PLC, "A" | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;108526 | $32658729 |
| Endava PLC, ADR (a) | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;120892 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;9273625 |
| Equifax, Inc. | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;33229 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;6558408 |
| Factset Research Systems, Inc. | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;7435 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;3429691 |
| Fidelity National Information Services, Inc. | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;213614 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;15504104 |
| FleetCor Technologies, Inc. (a) | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;84479 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;16574780 |
| Global Payments, Inc. | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;250874 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;26035707 |
| Morningstar, Inc. | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;30212 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;7405867 |
| MSCI, Inc. | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;18017 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;9149573 |
| Paya, Inc. (a) | &nbsp;&nbsp;&nbsp;1536287 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;14302832 |
| PayPal Holdings, Inc. (a) | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;242526 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;19016464 |
| TaskUs, Inc., "A" (a) | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;139516 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;2744280 |
| Thoughtworks Holding, Inc. (a) | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;615130 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;5609986 |
| TransUnion | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;67587 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;4263388 |
| Verisk Analytics, Inc., "A" | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;65492 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;12031535 |
| WEX, Inc. (a) | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;148798 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;25167694 |
|  |  | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;$209726663 |
| Cable TV – 0.7% | Cable TV – 0.7% |  |
| Charter Communications, Inc., "A" (a) | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;24336 | $9522433 |
| Computer Software – 26.1% | Computer Software – 26.1% |  |
| Activision Blizzard, Inc. | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;126343 | $9343065 |
| Adobe Systems, Inc. (a) | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;95934 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;33090515 |
| Asana, Inc. (a) | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;20505 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;372371 |
| Atlassian Corp. (a) | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;35058 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;4611880 |
| Black Knight, Inc. (a) | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;227891 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;14126963 |
| Dun & Bradstreet Holdings, Inc. | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;600161 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;8078167 |
| Freshworks, Inc, "A" (a)(l) | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;98379 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;1454042 |
| Intuit, Inc. | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;80712 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;32897404 |
| Microsoft Corp. | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;665126 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;169700248 |
| Mobileye Global, Inc., "A" (a) | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;148565 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;4235588 |
| Palo Alto Networks, Inc. (a) | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;74334 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;12629346 |
| Paycor HCM, Inc. (a) | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;163275 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;4721913 |
| Qualtrics International, "A" (a) | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;133337 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;1368038 |
| RAKUS Co. Ltd. | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;173900 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;2236974 |
| RingCentral, Inc. (a) | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;73620 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;2728357 |
| Salesforce, Inc. (a) | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;194285 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;31134171 |
| Topicus.com, Inc. (a) | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;104286 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;5799050 |
|  |  | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;$338528092 |
| Computer Software - Systems – 7.7% | Computer Software - Systems – 7.7% |  |
| Apple, Inc. | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;112942 | $16718804 |
| Arista Networks, Inc. (a) | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;60842 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;8475291 |
| Constellation Software, Inc. | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;7780 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;12542159 |
| Descartes Systems Group, Inc. (a) | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;164115 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;11394045 |
| Hitachi Ltd. | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;184800 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;9931292 |
| HubSpot, Inc. (a) | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;19385 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;5874237 |
| Nuvei Corp. (a) | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;86638 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;2669317 |
| Q2 Holdings, Inc. (a) | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;109947 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;2990558 |

---

------

Portfolio of Investments (unaudited) – continued

---

| | | |
|:---|:---|:---|
| **Issuer** | **Shares/Par** | &nbsp;&nbsp;&nbsp;**Value ($)** |
| Common Stocks – continued | Common Stocks – continued | Common Stocks – continued |
| Computer Software - Systems – continued | Computer Software - Systems – continued |  |
| ServiceNow, Inc. (a) | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;52111 | $21693809 |
| Shopify, Inc. (a) | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;196605 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;8037213 |
|  |  | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;$100326725 |
| Consumer Services – 3.0% | Consumer Services – 3.0% |  |
| Booking Holdings, Inc. (a) | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;19013 | $39536583 |
| Electronics – 6.6% | Electronics – 6.6% |  |
| Advanced Micro Devices (a) | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;146403 | $11365265 |
| KLA Corp. | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;42750 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;16807162 |
| Lam Research Corp. | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;12441 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;5876880 |
| Marvell Technology, Inc. | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;378203 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;17594004 |
| NVIDIA Corp. | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;202165 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;34212383 |
|  |  | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;$85855694 |
| Energy - Renewables – 0.4% | Energy - Renewables – 0.4% |  |
| Enphase Energy, Inc. (a) | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;16297 | $5224655 |
| Insurance – 3.3% | Insurance – 3.3% |  |
| Aon PLC | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;53099 | $16369360 |
| Arthur J. Gallagher & Co. | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;134608 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;26801799 |
|  |  | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;$43171159 |
| Internet – 12.4% | Internet – 12.4% |  |
| Alphabet, Inc., "A" (a) | &nbsp;&nbsp;&nbsp;1199002 | $121087212 |
| Gartner, Inc. (a) | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;37644 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;13189328 |
| Meta Platforms, Inc., "A" (a) | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;113154 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;13363487 |
| Pinterest, Inc. (a) | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;99988 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;2541695 |
| Tencent Holdings Ltd. | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;278000 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;10446325 |
|  |  | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;$160628047 |
| Leisure & Toys – 0.9% | Leisure & Toys – 0.9% |  |
| Take-Two Interactive Software, Inc. (a) | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;108788 | $11497804 |
| Medical Equipment – 0.2% | Medical Equipment – 0.2% |  |
| Maravai Lifesciences Holdings, Inc., "A" (a) | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;187984 | $2797202 |
| Other Banks & Diversified Financials – 8.9% | Other Banks & Diversified Financials – 8.9% |  |
| Mastercard, Inc., "A" | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;211655 | $75433842 |
| S&P Global, Inc. | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;25517 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;9002398 |
| Visa, Inc., "A" | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;139778 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;30331826 |
|  |  | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;$114768066 |
| Specialty Stores – 7.9% | Specialty Stores – 7.9% |  |
| Amazon.com, Inc. (a) | &nbsp;&nbsp;&nbsp;1055612 | $101908782 |
| Telecommunications - Wireless – 0.3% | Telecommunications - Wireless – 0.3% |  |
| SBA Communications Corp., REIT | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;12053 | $3607463 |
| **Total Common Stocks** |  | &nbsp;&nbsp;**$1255398416** |
| Investment Companies (h) – 2.3% | Investment Companies (h) – 2.3% | Investment Companies (h) – 2.3% |
| Money Market Funds – 2.3% | Money Market Funds – 2.3% |  |
| MFS Institutional Money Market Portfolio, 3.67% (v) | 29757624 | &nbsp;&nbsp;&nbsp;$29757624 |

---

------

Portfolio of Investments (unaudited) – continued

---

| | | | | | |
|:---|:---|:---|:---|:---|:---|
| **Underlying/Expiration Date/Exercise Price** | &nbsp;&nbsp;**Put/Call** | &nbsp;&nbsp;**Counterparty** | &nbsp;&nbsp;**Notional<br> Amount** | &nbsp;&nbsp;&nbsp;**Par Amount/<br> Number of<br> Contracts** | &nbsp;&nbsp;**Value ($)** |
| Purchased Options – 0.2% | Purchased Options – 0.2% | Purchased Options – 0.2% | Purchased Options – 0.2% | Purchased Options – 0.2% |  |
| Special Products & Services – 0.2% | Special Products & Services – 0.2% | Special Products & Services – 0.2% | Special Products & Services – 0.2% | Special Products & Services – 0.2% |  |
| Invesco QQQ Trust Series I – June 2023 @ $295 | &nbsp;&nbsp;Put | &nbsp;&nbsp;Exchange Traded | &nbsp;&nbsp;$33267024 | &nbsp;&nbsp;&nbsp; 1134 | &nbsp;&nbsp;$2612736 |

---

---

| | | |
|:---|:---|:---|
| **Issuer** | **Shares/Par** |  |
| Collateral for Securities Loaned – 0.0% | Collateral for Securities Loaned – 0.0% | Collateral for Securities Loaned – 0.0% |
| State Street Navigator Securities Lending Government Money Market Portfolio, 3.86% (j) | 143550 | &nbsp;&nbsp;&nbsp;$143550 |
| Other Assets, Less Liabilities – 0.7% |  | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;8825711 |
| **Net Assets – 100.0%** | **Net Assets – 100.0%** | &nbsp;&nbsp;&nbsp;**$1296738037** |

---

(a) Non-income producing security.

(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 $29,757,624 and $1,258,154,702, respectively.

(j) The rate quoted is the annualized seven-day yield of the fund at period end.

(l) A portion of this security is on loan. See Note 2 for additional information.

(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.

The following abbreviations are used in this report and are defined: <br> ADR American Depositary Receipt <br> REIT Real Estate Investment Trust

At November 30, 2022, the fund had cash collateral of $78,201 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
11/30/22 (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, equity securities, including restricted equity securities and equity securities sold short, are generally valued at the last sale or official closing price on their primary market or exchange as provided by a third-party pricing service. Equity securities, for which there were no sales reported that day, are generally valued at the last quoted daily bid quotation on their primary market or exchange as provided by a third-party pricing service. Equity securities sold short, for which there were no sales reported that day, are generally valued at the last quoted daily ask quotation on their primary market or exchange 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.

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. Events that occur after foreign markets close (such as developments in foreign markets and significant movements in the U.S. markets) and prior to the determination of the fund's net asset value may be deemed to have a material effect on the value of securities traded in foreign markets. Accordingly, the fund's foreign equity securities may often be valued at fair value. 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. The following is a summary of the levels used as of November 30, 2022 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** |
| Equity Securities: |  |  |  |  |
| &nbsp;&nbsp;&nbsp;United States | &nbsp;&nbsp;&nbsp;$1181445564 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;$— | &nbsp;&nbsp;&nbsp;$— | &nbsp;&nbsp;&nbsp;$1181445564 |
| &nbsp;&nbsp;&nbsp;Canada | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;40441784 | &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;40441784 |
| &nbsp;&nbsp;&nbsp;Japan | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;— | &nbsp;&nbsp;&nbsp;&nbsp;12168266 | &nbsp;&nbsp;&nbsp;&nbsp;— | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;12168266 |
| &nbsp;&nbsp;&nbsp;China | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;— | &nbsp;&nbsp;&nbsp;&nbsp;10446325 | &nbsp;&nbsp;&nbsp;&nbsp;— | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;10446325 |
| &nbsp;&nbsp;&nbsp;United Kingdom | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;9273625 | &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;9273625 |
| &nbsp;&nbsp;&nbsp;Israel | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;4235588 | &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;4235588 |
| Mutual Funds | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;29901174 | &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;29901174 |
| Total | &nbsp;&nbsp;&nbsp;$1265297735 | &nbsp;&nbsp;&nbsp;$22614591 | &nbsp;&nbsp;&nbsp;$— | &nbsp;&nbsp;&nbsp;$1287912326 |

---

------

Supplemental Information (unaudited) – continued

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

(2) Securities Lending Collateral

At November 30, 2022, the value of securities loaned was $727,013. These loans were collateralized by cash of $143,550 and U.S. Treasury Obligations (held by the lending agent) of $568,758.

(3) 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;$55247779 | &nbsp;&nbsp;$48190130 | &nbsp;&nbsp;$73680187 | &nbsp;&nbsp;$43 | &nbsp;&nbsp;$(141) | &nbsp;&nbsp;$29757624 |

---

---

| | | |
|:---|:---|:---|
| **Affiliated Issuers** | &nbsp;&nbsp;**Dividend<br> Income** | &nbsp;&nbsp;**Capital Gain<br> Distributions** |
| MFS Institutional Money Market Portfolio | &nbsp;&nbsp;$281614 | &nbsp;&nbsp;$— |

---

(4) Russia and Ukraine Conflict

The market disruptions, which began in late February 2022, associated with geopolitical events related to the conflict between Russia and Ukraine may adversely affect the value of the fund's assets and thus the fund's performance. Management continues to monitor these events and to evaluate the related impacts, if any, to the fund.

## 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 I

- **b. Investment Company Act file number:** 811-04777

- **c. CIK number of Registrant:** 0000798244

- **d. LEI of Registrant:** 549300QRB5FQ35HH3533

- **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 Technology Fund

- **b. EDGAR series identifier (if any):** S000000768

- **c. LEI of Series:** RFHV6YCC4ZBRJX8V4134

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

- **a. Date of fiscal year-end:** 2023-08-31

- **b. Date as of which information is reported:** 2022-11-30

**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:** $1307314510.40

**Total Liabilities:** $8717846.62

**Net Assets:** $1298596663.78

**Monthly Return Information**

| Class               | Month 1 Return (%)   | Month 2 Return (%)   | Month 3 Return (%)   |
|:---|:---|:---|:---|
| Class ID C000002250 | -11.53%              | 3.72%                | 4.83%                |
| Class ID C000002252 | -11.59%              | 3.62%                | 4.72%                |
| Class ID C000002253 | -11.53%              | 3.73%                | 4.82%                |
| Class ID C000002257 | -11.55%              | 3.68%                | 4.77%                |
| Class ID C000002255 | -11.59%              | 3.63%                | 4.73%                |
| Class ID C000002249 | -11.53%              | 3.69%                | 4.81%                |
| Class ID C000124425 | -11.51%              | 3.73%                | 4.83%                |
| Class ID C000002251 | -11.58%              | 3.61%                | 4.74%                |
| Class ID C000002258 | -11.54%              | 3.71%                | 4.79%                |

**Monthly Gains & Losses**

| Period   | Net Realized Gain/Loss   | Net Unrealized Appreciation/Depreciation   |
|:---|:---|:---|
| Month 1  | $2717386.08              | $-165108474.90                             |
| Month 2  | $-1358156.90             | $47361584.66                               |
| Month 3  | $-7964391.84             | $68015858.14                               |

### 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   |
|:---|:---|:---|:---|:---|:---|:---|---:|:---|:---|:---|:---|:---|:---|:---|---:|:---|
| Salesforce Inc                             | Salesforce Inc                                                              | CUSIP: 79466L302<br>LEI: RCGZFPDMRW58VJ54VR07 | Long             | EC               | CORP              | US        |    194285 | NS      | $31134171.25  | 2.40%             |  |  |  | No            |                  1 | On Loan: No      |
| Intuit Inc                                 | Intuit Inc                                                                  | CUSIP: 461202103<br>LEI: VI90HBPH7XSFMB9E4M29 | Long             | EC               | CORP              | US        |     80712 | NS      | $32897404.08  | 2.53%             |  |  |  | No            |                  1 | On Loan: No      |
| Accenture PLC                              | Accenture PLC                                                               | CUSIP: 000000000<br>LEI: N/A                  | Long             | EC               | CORP              | IE        |    110802 | NS      | $33343645.86  | 2.57%             |  |  |  | No            |                  1 | On Loan: No      |
| MSCI Inc                                   | MSCI Inc                                                                    | CUSIP: 55354G100<br>LEI: 549300HTIN2PD78UB763 | Long             | EC               | CORP              | US        |     18017 | NS      | $9149573.11   | 0.70%             |  |  |  | No            |                  1 | On Loan: No      |
| Atlassian Corp                             | Atlassian Corp                                                              | CUSIP: 049468101<br>LEI: 549300V7ZY5P02D2MY38 | Long             | EC               | CORP              | US        |     35058 | NS      | $4611879.90   | 0.36%             |  |  |  | No            |                  1 | On Loan: No      |
| Tradeweb Markets Inc                       | Tradeweb Markets Inc                                                        | CUSIP: 892672106<br>LEI: N/A                  | Long             | EC               | CORP              | US        |     85701 | NS      | $5267183.46   | 0.41%             |  |  |  | No            |                  1 | On Loan: No      |
| Constellation Software Inc/Canada          | Constellation Software Inc/Canada                                           | CUSIP: 21037X100<br>LEI: 549300B6PYHMCTDWQV29 | Long             | EC               | CORP              | CA        |      8274 | NS      | $13338538.07  | 1.03%             |  |  |  | No            |                  1 | On Loan: No      |
| State Street Global Advisors               | State Street Navigator Securities Lending Government Money Market Portfolio | CUSIP: 857492706<br>LEI: 5493008BJIBKQ5KTIF74 | Long             | STIV             | RF                | US        |    143550 | NS      | $143550.00    | 0.01%             |  |  |  | No            |                  1 | On Loan: No      |
| HubSpot Inc                                | HubSpot Inc                                                                 | CUSIP: 443573100<br>LEI: 529900BLNVEW0MVKJB37 | Long             | EC               | CORP              | US        |     19385 | NS      | $5874236.55   | 0.45%             |  |  |  | No            |                  1 | On Loan: No      |
| Dun & Bradstreet Holdings Inc              | Dun & Bradstreet Holdings Inc                                               | CUSIP: 26484T106<br>LEI: N/A                  | Long             | EC               | CORP              | US        |    600161 | NS      | $8078167.06   | 0.62%             |  |  |  | No            |                  1 | On Loan: No      |
| Black Knight Inc                           | Black Knight Inc                                                            | CUSIP: 09215C105<br>LEI: 549300TUSNXS3BFFML48 | Long             | EC               | CORP              | US        |    227891 | NS      | $14126963.09  | 1.09%             |  |  |  | No            |                  1 | On Loan: No      |
| Exchange traded                            | INVESCO QQQ TRUST SERIES 1                                                  | CUSIP: 000000000<br>LEI: N/A                  | N/A              | DE               |  | US        |      1134 | NC      | $2612736.00   | 0.20%             |  |  |  | No            |                  1 | On Loan: No      |
| Hitachi Ltd                                | Hitachi Ltd                                                                 | CUSIP: 000000000<br>LEI: 549300T6IPOCDWLKC615 | Long             | EC               | CORP              | JP        |    184800 | NS      | $9931291.95   | 0.76%             |  |  |  | No            |                  2 | On Loan: No      |
| FleetCor Technologies Inc                  | FleetCor Technologies Inc                                                   | CUSIP: 339041105<br>LEI: 549300DG6RR0NQSFLN74 | Long             | EC               | CORP              | US        |     84479 | NS      | $16574779.80  | 1.28%             |  |  |  | No            |                  1 | On Loan: No      |
| Advanced Micro Devices Inc                 | Advanced Micro Devices Inc                                                  | CUSIP: 007903107<br>LEI: R2I72C950HOYXII45366 | Long             | EC               | CORP              | US        |    154844 | NS      | $12020539.72  | 0.93%             |  |  |  | No            |                  1 | On Loan: No      |
| Enphase Energy Inc                         | Enphase Energy Inc                                                          | CUSIP: 29355A107<br>LEI: 5493008U7KIGMI59Z314 | Long             | EC               | CORP              | US        |     16297 | NS      | $5224655.23   | 0.40%             |  |  |  | No            |                  1 | On Loan: No      |
| CME Group Inc                              | CME Group Inc                                                               | CUSIP: 12572Q105<br>LEI: LCZ7XYGSLJUHFXXNXD88 | Long             | EC               | CORP              | US        |     39816 | NS      | $7027524.00   | 0.54%             |  |  |  | No            |                  1 | On Loan: No      |
| PayPal Holdings Inc                        | PayPal Holdings Inc                                                         | CUSIP: 70450Y103<br>LEI: 5493005X2GO78EFZ3E94 | Long             | EC               | CORP              | US        |    242526 | NS      | $19016463.66  | 1.46%             |  |  |  | No            |                  1 | On Loan: No      |
| Alphabet Inc                               | Alphabet Inc                                                                | CUSIP: 02079K305<br>LEI: 5493006MHB84DD0ZWV18 | Long             | EC               | CORP              | US        |   1199002 | NS      | $121087211.98 | 9.32%             |  |  |  | No            |                  1 | On Loan: No      |
| Visa Inc                                   | Visa Inc                                                                    | CUSIP: 92826C839<br>LEI: 549300JZ4OKEHW3DPJ59 | Long             | EC               | CORP              | US        |    139778 | NS      | $30331826.00  | 2.34%             |  |  |  | No            |                  1 | On Loan: No      |
| TaskUS Inc                                 | TaskUS Inc                                                                  | CUSIP: 87652V109<br>LEI: 549300VFPOK2Y6GLWE32 | Long             | EC               | CORP              | US        |    139516 | NS      | $2744279.72   | 0.21%             |  |  |  | No            |                  1 | On Loan: No      |
| Microsoft Corp                             | Microsoft Corp                                                              | CUSIP: 594918104<br>LEI: INR2EJN1ERAN0W5ZP974 | Long             | EC               | CORP              | US        |    667699 | NS      | $170356722.86 | 13.12%            |  |  |  | No            |                  1 | On Loan: No      |
| NVIDIA Corp                                | NVIDIA Corp                                                                 | CUSIP: 67066G104<br>LEI: 549300S4KLFTLO7GSQ80 | Long             | EC               | CORP              | US        |    206560 | NS      | $34956148.80  | 2.69%             |  |  |  | No            |                  1 | On Loan: No      |
| Adobe Inc                                  | Adobe Inc                                                                   | CUSIP: 00724F101<br>LEI: FU4LY2G4933NH2E1CP29 | Long             | EC               | CORP              | US        |     95934 | NS      | $33090514.62  | 2.55%             |  |  |  | No            |                  1 | On Loan: No      |
| Take-Two Interactive Software Inc          | Take-Two Interactive Software Inc                                           | CUSIP: 874054109<br>LEI: BOMSTHHJK882EWYX3334 | Long             | EC               | CORP              | US        |    108788 | NS      | $11497803.72  | 0.89%             |  |  |  | No            |                  1 | On Loan: No      |
| Gartner Inc                                | Gartner Inc                                                                 | CUSIP: 366651107<br>LEI: PP55B5R38BFB8O8HH686 | Long             | EC               | CORP              | US        |     37644 | NS      | $13189328.28  | 1.02%             |  |  |  | No            |                  1 | On Loan: No      |
| TransUnion                                 | TransUnion                                                                  | CUSIP: 89400J107<br>LEI: 549300ZS772LUNUMRB03 | Long             | EC               | CORP              | US        |     67587 | NS      | $4263387.96   | 0.33%             |  |  |  | No            |                  1 | On Loan: No      |
| Paya Holdings Inc                          | Paya Holdings Inc                                                           | CUSIP: 70434P103<br>LEI: N/A                  | Long             | EC               | CORP              | US        |   1536287 | NS      | $14302831.97  | 1.10%             |  |  |  | No            |                  1 | On Loan: No      |
| RingCentral Inc                            | RingCentral Inc                                                             | CUSIP: 76680R206<br>LEI: 549300C8EH0H1614VE84 | Long             | EC               | CORP              | US        |     73620 | NS      | $2728357.20   | 0.21%             |  |  |  | No            |                  1 | On Loan: No      |
| Activision Blizzard Inc                    | Activision Blizzard Inc                                                     | CUSIP: 00507V109<br>LEI: 549300TPQQDBP9GNOF40 | Long             | EC               | CORP              | US        |    143431 | NS      | $10606722.45  | 0.82%             |  |  |  | No            |                  1 | On Loan: No      |
| Marvell Technology Inc                     | Marvell Technology Inc                                                      | CUSIP: 573874104<br>LEI: N/A                  | Long             | EC               | CORP              | US        |    378203 | NS      | $17594003.56  | 1.35%             |  |  |  | No            |                  1 | On Loan: No      |
| Freshworks Inc                             | Freshworks Inc                                                              | CUSIP: 358054104<br>LEI: 254900ULRGCUEIK0K191 | Long             | EC               | CORP              | US        |     98379 | NS      | $1454041.62   | 0.11%             |  |  |  | No            |                  1 | On Loan: —       |
| Mastercard Inc                             | Mastercard Inc                                                              | CUSIP: 57636Q104<br>LEI: AR5L2ODV9HN37376R084 | Long             | EC               | CORP              | US        |    211655 | NS      | $75433842.00  | 5.81%             |  |  |  | No            |                  1 | On Loan: No      |
| Descartes Systems Group Inc/The            | Descartes Systems Group Inc/The                                             | CUSIP: 249906108<br>LEI: 875500NEPA7JI5EOMN45 | Long             | EC               | CORP              | CA        |    164115 | NS      | $11394045.16  | 0.88%             |  |  |  | No            |                  1 | On Loan: No      |
| Thoughtworks Holding Inc                   | Thoughtworks Holding Inc                                                    | CUSIP: 88546E105<br>LEI: 984500E705D15F2DF680 | Long             | EC               | CORP              | US        |    615130 | NS      | $5609985.60   | 0.43%             |  |  |  | No            |                  1 | On Loan: No      |
| Topicus.com Inc                            | Topicus.com Inc                                                             | CUSIP: 89072T102<br>LEI: N/A                  | Long             | EC               | CORP              | CA        |    104286 | NS      | $5799050.51   | 0.45%             |  |  |  | No            |                  1 | On Loan: No      |
| Arista Networks Inc                        | Arista Networks Inc                                                         | CUSIP: 040413106<br>LEI: 635400H1WKBLOQERUU95 | Long             | EC               | CORP              | US        |     60842 | NS      | $8475290.60   | 0.65%             |  |  |  | No            |                  1 | On Loan: No      |
| SBA Communications Corp                    | SBA Communications Corp                                                     | CUSIP: 78410G104<br>LEI: 5299001HX8ZN8Y8QIT49 | Long             | EC               | CORP              | US        |     12053 | NS      | $3607462.90   | 0.28%             |  |  |  | No            |                  1 | On Loan: No      |
| Nuvei Corp                                 | Nuvei Corp                                                                  | CUSIP: 67079A102<br>LEI: N/A                  | Long             | EC               | CORP              | CA        |     86638 | NS      | $2669316.78   | 0.21%             |  |  |  | No            |                  1 | On Loan: No      |
| MFS Institutional Money Market Portfolio   | MFS Institutional Money Market Portfolio                                    | CUSIP: 55291X109<br>LEI: 5L2W638H85N8T1136O07 | Long             | STIV             | RF                | US        |  37838013 | NS      | $37838012.66  | 2.91%             |  |  |  | No            |                  1 | On Loan: No      |
| ServiceNow Inc                             | ServiceNow Inc                                                              | CUSIP: 81762P102<br>LEI: 549300HJTQM36M0E1G39 | Long             | EC               | CORP              | US        |     52111 | NS      | $21693809.30  | 1.67%             |  |  |  | No            |                  1 | On Loan: No      |
| FactSet Research Systems Inc               | FactSet Research Systems Inc                                                | CUSIP: 303075105<br>LEI: 549300ZSJE7NBK6K9P30 | Long             | EC               | CORP              | US        |      7435 | NS      | $3429691.15   | 0.26%             |  |  |  | No            |                  1 | On Loan: No      |
| Fidelity National Information Services Inc | Fidelity National Information Services Inc                                  | CUSIP: 31620M106<br>LEI: 6WQI0GK1PRFVBA061U48 | Long             | EC               | CORP              | US        |    213614 | NS      | $15504104.12  | 1.19%             |  |  |  | No            |                  1 | On Loan: No      |
| Charles Schwab Corp/The                    | Charles Schwab Corp/The                                                     | CUSIP: 808513105<br>LEI: 549300VSGCJ7E698NM85 | Long             | EC               | CORP              | US        |    193898 | NS      | $16004340.92  | 1.23%             |  |  |  | No            |                  1 | On Loan: No      |
| Qualtrics International Inc                | Qualtrics International Inc                                                 | CUSIP: 747601201<br>LEI: 549300NW34K5PVZGTN68 | Long             | EC               | CORP              | US        |    133337 | NS      | $1368037.62   | 0.11%             |  |  |  | No            |                  1 | On Loan: No      |
| Meta Platforms Inc                         | Meta Platforms Inc                                                          | CUSIP: 30303M102<br>LEI: BQ4BKCS1HXDV9HN80Z93 | Long             | EC               | CORP              | US        |    113154 | NS      | $13363487.40  | 1.03%             |  |  |  | No            |                  1 | On Loan: No      |
| Endava PLC                                 | Endava PLC                                                                  | CUSIP: 29260V105<br>LEI: 213800JJ6CRPCWCQVZ25 | Long             | EC               | CORP              | GB        |    120892 | NS      | $9273625.32   | 0.71%             |  |  |  | No            |                  1 | On Loan: No      |
| Aon PLC                                    | Aon PLC                                                                     | CUSIP: 000000000<br>LEI: 635400FALWQYX5E6QC64 | Long             | EC               | CORP              | IE        |     55066 | NS      | $16975746.48  | 1.31%             |  |  |  | No            |                  1 | On Loan: No      |
| WEX Inc                                    | WEX Inc                                                                     | CUSIP: 96208T104<br>LEI: T9M5IGROL1TL1G5OV478 | Long             | EC               | CORP              | US        |    148798 | NS      | $25167693.72  | 1.94%             |  |  |  | No            |                  1 | On Loan: No      |
| Palo Alto Networks Inc                     | Palo Alto Networks Inc                                                      | CUSIP: 697435105<br>LEI: 549300QXR2YVZV231H43 | Long             | EC               | CORP              | US        |     74334 | NS      | $12629346.60  | 0.97%             |  |  |  | No            |                  1 | On Loan: No      |
| Shopify Inc                                | Shopify Inc                                                                 | CUSIP: 82509L107<br>LEI: 549300HGQ43STJLLP808 | Long             | EC               | CORP              | CA        |    196605 | NS      | $8037212.40   | 0.62%             |  |  |  | No            |                  1 | On Loan: No      |
| Lam Research Corp                          | Lam Research Corp                                                           | CUSIP: 512807108<br>LEI: 549300I4GMO6D34U1T02 | Long             | EC               | CORP              | US        |     12441 | NS      | $5876879.58   | 0.45%             |  |  |  | No            |                  1 | On Loan: No      |
| KLA Corp                                   | KLA Corp                                                                    | CUSIP: 482480100<br>LEI: 549300H0BF5JCG96TJ81 | Long             | EC               | CORP              | US        |     42750 | NS      | $16807162.50  | 1.29%             |  |  |  | No            |                  1 | On Loan: No      |
| Verisk Analytics Inc                       | Verisk Analytics Inc                                                        | CUSIP: 92345Y106<br>LEI: 549300I1YSWNIRKBWP67 | Long             | EC               | CORP              | US        |     65492 | NS      | $12031535.32  | 0.93%             |  |  |  | No            |                  1 | On Loan: No      |
| Pinterest Inc                              | Pinterest Inc                                                               | CUSIP: 72352L106<br>LEI: N/A                  | Long             | EC               | CORP              | US        |     99988 | NS      | $2541694.96   | 0.20%             |  |  |  | No            |                  1 | On Loan: No      |
| Apple Inc                                  | Apple Inc                                                                   | CUSIP: 037833100<br>LEI: HWUPKR0MPOU8FGXBT394 | Long             | EC               | CORP              | US        |    112942 | NS      | $16718804.26  | 1.29%             |  |  |  | No            |                  1 | On Loan: No      |
| Asana Inc                                  | Asana Inc                                                                   | CUSIP: 04342Y104<br>LEI: N/A                  | Long             | EC               | CORP              | US        |     20505 | NS      | $372370.80    | 0.03%             |  |  |  | No            |                  1 | On Loan: No      |
| Equifax Inc                                | Equifax Inc                                                                 | CUSIP: 294429105<br>LEI: 5493004MCF8JDC86VS77 | Long             | EC               | CORP              | US        |     37454 | NS      | $7392295.98   | 0.57%             |  |  |  | No            |                  1 | On Loan: No      |
| Mobileye Global Inc                        | Mobileye Global Inc                                                         | CUSIP: 60741F104<br>LEI: N/A                  | Long             | EC               | CORP              | US        |    148565 | NS      | $4235588.15   | 0.33%             |  |  |  | No            |                  1 | On Loan: No      |
| Charter Communications Inc                 | Charter Communications Inc                                                  | CUSIP: 16119P108<br>LEI: 0J0XRGZE3PBRFEZ7MV65 | Long             | EC               | CORP              | US        |     24336 | NS      | $9522433.44   | 0.73%             |  |  |  | No            |                  1 | On Loan: No      |
| Tencent Holdings Ltd                       | Tencent Holdings Ltd                                                        | CUSIP: 000000000<br>LEI: 254900N4SLUMW4XUYY11 | Long             | EC               | CORP              | KY        |    278000 | NS      | $10446324.70  | 0.80%             |  |  |  | No            |                  2 | On Loan: No      |
| Rakus Co Ltd                               | Rakus Co Ltd                                                                | CUSIP: 000000000<br>LEI: N/A                  | Long             | EC               | CORP              | JP        |    173900 | NS      | $2236974.34   | 0.17%             |  |  |  | No            |                  2 | On Loan: No      |
| Booking Holdings Inc                       | Booking Holdings Inc                                                        | CUSIP: 09857L108<br>LEI: FXM8FAOHMYDIPD38UZ17 | Long             | EC               | CORP              | US        |     19013 | NS      | $39536582.85  | 3.04%             |  |  |  | No            |                  1 | On Loan: No      |
| S&P Global Inc                             | S&P Global Inc                                                              | CUSIP: 78409V104<br>LEI: Y6X4K52KMJMZE7I7MY94 | Long             | EC               | CORP              | US        |     25517 | NS      | $9002397.60   | 0.69%             |  |  |  | No            |                  1 | On Loan: No      |
| Morningstar Inc                            | Morningstar Inc                                                             | CUSIP: 617700109<br>LEI: 529900YGNQPOVAXQ7F29 | Long             | EC               | CORP              | US        |     30212 | NS      | $7405867.56   | 0.57%             |  |  |  | No            |                  1 | On Loan: No      |
| Paycor HCM Inc                             | Paycor HCM Inc                                                              | CUSIP: 70435P102<br>LEI: N/A                  | Long             | EC               | CORP              | US        |    163275 | NS      | $4721913.00   | 0.36%             |  |  |  | No            |                  1 | On Loan: No      |
| Arthur J Gallagher & Co                    | Arthur J Gallagher & Co                                                     | CUSIP: 363576109<br>LEI: 54930049QLLMPART6V29 | Long             | EC               | CORP              | US        |    134608 | NS      | $26801798.88  | 2.06%             |  |  |  | No            |                  1 | On Loan: No      |
| Global Payments Inc                        | Global Payments Inc                                                         | CUSIP: 37940X102<br>LEI: 549300NOMHGVQBX6S778 | Long             | EC               | CORP              | US        |    269707 | NS      | $27990192.46  | 2.16%             |  |  |  | No            |                  1 | On Loan: No      |
| Amazon.com Inc                             | Amazon.com Inc                                                              | CUSIP: 023135106<br>LEI: ZXTILKJKG63JELOEG630 | Long             | EC               | CORP              | US        |   1061100 | NS      | $102438594.00 | 7.89%             |  |  |  | No            |                  1 | On Loan: No      |
| Q2 Holdings Inc                            | Q2 Holdings Inc                                                             | CUSIP: 74736L109<br>LEI: 549300M9RKR9DZXWS696 | Long             | EC               | CORP              | US        |    109947 | NS      | $2990558.40   | 0.23%             |  |  |  | No            |                  1 | On Loan: No      |
| Maravai LifeSciences Holdings Inc          | Maravai LifeSciences Holdings Inc                                           | CUSIP: 56600D107<br>LEI: N/A                  | Long             | EC               | CORP              | US        |    187984 | NS      | $2797201.92   | 0.22%             |  |  |  | No            |                  1 | On Loan: No      |

### Signature

**Date Signed:** 2022-12-22

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

**Signature:** Kasey Phillips

**Name of Signer:** Kasey Phillips

**Title:** Assistant Treasurer