# EDGAR Filing Document

**Accession Number:** 0001928846
**File Stem:** 0001752724-25-150445
**Filing Date:** 2025-6
**Character Count:** 24639
**Document Hash:** cde98275d27a66653d4db6b19d816eb6
**Contains OCR:** False
**Source Format:** 

## Filing Content

## Filing Summary
**0001752724-25-150445.hdr.sgml**: 20250623

**ACCESSION NUMBER**: 0001752724-25-150445

**CONFORMED SUBMISSION TYPE**: NPORT-P

**PUBLIC DOCUMENT COUNT**: 1

**CONFORMED PERIOD OF REPORT**: 20250430

**FILED AS OF DATE**: 20250623

**DATE AS OF CHANGE**: 20250623

**PERIOD START**: 20251031

**FILER**: 

**COMPANY DATA:**
- **COMPANY CONFORMED NAME:** Short Duration Inflation-Protected Income Portfolio
- **CENTRAL INDEX KEY:** 0001928846

**ORGANIZATION NAME:**
- **EIN:** 000000000

**FILING VALUES:**
- **FORM TYPE:** NPORT-P
- **SEC ACT:** 1940 Act
- **SEC FILE NUMBER:** 811-23803
- **FILM NUMBER:** 251063206

**BUSINESS ADDRESS:**
- **STREET 1:** ONE POST OFFICE SQUARE
- **CITY:** BOSTON
- **STATE:** MA
- **ZIP:** 02109
- **BUSINESS PHONE:** 6174828260

**MAIL ADDRESS:**
- **STREET 1:** ONE POST OFFICE SQUARE
- **CITY:** BOSTON
- **STATE:** MA
- **ZIP:** 02109

**FORMER COMPANY:**
- **FORMER CONFORMED NAME:** Eaton Vance Short Duration Inflation-Protected Income Portfolio
- **DATE OF NAME CHANGE:** 20220513

## Series and Classes Contracts Data

### Short Duration Inflation-Protected Income Portfolio (Series ID: S000077078)

| Class ID   | Class Name                                          | Ticker Symbol   |
|:---|:---|:---|
| C000237224 | Short Duration Inflation-Protected Income Portfolio |  |

## Form NPORT-P: Monthly Portfolio Investments Report

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

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

- **a. Name of Registrant:** Short Duration Inflation-Protected Income Portfolio

- **b. Investment Company Act file number:** 811-23803

- **c. CIK number of Registrant:** 0001928846

- **d. LEI of Registrant:** 549300UOMB5ER6NIQJ37

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

  - **Street Address 1:** One Post Office Square

  - **City:** Boston

  - **State:** MA

  - **Foreign country:** US

  - **Zip / Postal Code:** 02109

  - **Telephone number:** 617-482-8260

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

- **a. Name of Series:** Short Duration Inflation-Protected Income Portfolio

- **b. EDGAR series identifier (if any):** S000077078

- **c. LEI of Series:** 549300UOMB5ER6NIQJ37

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

- **a. Date of fiscal year-end:** 2025-10-31

- **b. Date as of which information is reported:** 2025-04-30

**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:** $399242893.47

**Total Liabilities:** $265214.85

**Net Assets:** $398977678.62

**Currency Risk Metrics (dv01):**

- 

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

- **3-Month:** -214.20000000 | **1-Year:** -329.45000000 | **5-Year:** -182.61000000 | **10-Year:** -209.62000000 | **30-Year:** -303.52000000

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

- **3-Month:** -7.11000000 | **1-Year:** -179.44000000 | **5-Year:** -146.62000000 | **10-Year:** -127.52000000 | **30-Year:** 0.00000000

**Monthly Return Information**

| Class               | Month 1 Return (%)   | Month 2 Return (%)   | Month 3 Return (%)   |
|:---|:---|:---|:---|
| Class ID C000237224 | 1.21%                | 1.20%                | 0.76%                |

**Monthly Gains & Losses**

| Period   | Net Realized Gain/Loss   | Net Unrealized Appreciation/Depreciation   |
|:---|:---|:---|
| Month 1  | $-239007.62              | $3893834.94                                |
| Month 2  | $-28133.40               | $1238294.04                                |
| Month 3  | $-86552.43               | $1242632.69                                |

### 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   |
|:---|:---|:---|:---|:---|:---|:---|---:|:---|:---|:---|:---|:---|:---|:---|---:|:---|
| United States Treasury                | U.S. Treasury Inflation-Indexed Notes                                                                                              | CUSIP: 91282CFR7<br>LEI: 254900HROIFWPRGM1V77 | Long             | DBT              | UST               | US        |  15939452 | PA      | $16268400.21  | 4.08%             | 2027-10-15      | Fixed         | 1.62%                 | No            |                  2 | On Loan: No      |
| United States Treasury                | U.S. Treasury Inflation-Indexed Notes                                                                                              | CUSIP: 91282CJH5<br>LEI: 254900HROIFWPRGM1V77 | Long             | DBT              | UST               | US        |  20832000 | PA      | $21772475.43  | 5.46%             | 2028-10-15      | Fixed         | 2.38%                 | No            |                  2 | On Loan: No      |
| LCH Ltd.                              | Long: BMIETRFE5 IRS USD R V 12MUSCPI BMIETRFG0 CCPINFLATIONZERO / Short: BMIETRFE5 IRS USD P F  2.51000 BMIETRFF2 CCPINFLATIONZERO | CUSIP: 000000000<br>LEI: F226TOH6YD6XJB17KS62 | N/A              | DIR              |  | US        |  10000000 | OU      | $5973.00      | 0.00%             |  |  |  | No            |                  2 | On Loan: No      |
| United States Treasury                | U.S. Treasury Inflation-Indexed Notes                                                                                              | CUSIP: 9128287D6<br>LEI: 254900HROIFWPRGM1V77 | Long             | DBT              | UST               | US        |   7857612 | PA      | $7562036.14   | 1.90%             | 2029-07-15      | Fixed         | 0.25%                 | No            |                  2 | On Loan: No      |
| United States Treasury                | U.S. Treasury Inflation-Indexed Bonds                                                                                              | CUSIP: 912810PS1<br>LEI: 254900HROIFWPRGM1V77 | Long             | DBT              | UST               | US        |  12656080 | PA      | $13002574.61  | 3.26%             | 2027-01-15      | Fixed         | 2.38%                 | No            |                  2 | On Loan: No      |
| JP Morgan Mortgage Trust              | JP Morgan Mortgage Trust 2023-HE2                                                                                                  | CUSIP: 46657FAA3<br>LEI: N/A                  | Long             | ABS-O            | CORP              | US        |    893210 | PA      | $899870.16    | 0.23%             | 2054-03-20      | Floating      | 6.05%                 | No            |                  2 | On Loan: No      |
| Vantage Data Centers LLC              | Vantage Data Centers LLC                                                                                                           | CUSIP: 92212KAC0<br>LEI: 5493000RL8X7WTQ7HO20 | Long             | ABS-O            | CORP              | US        |   1105000 | PA      | $1029242.42   | 0.26%             | 2045-09-15      | Fixed         | 1.99%                 | No            |                  2 | On Loan: No      |
| BX Trust                              | BX Commercial Mortgage Trust 2021-VOLT                                                                                             | CUSIP: 05609VAG0<br>LEI: N/A                  | Long             | ABS-MBS          | CORP              | US        |   5000000 | PA      | $4949905.00   | 1.24%             | 2036-09-15      | Floating      | 5.39%                 | No            |                  2 | On Loan: No      |
| United States Treasury                | U.S. Treasury Inflation-Indexed Notes                                                                                              | CUSIP: 91282CCA7<br>LEI: 254900HROIFWPRGM1V77 | Long             | DBT              | UST               | US        |   6082650 | PA      | $6044433.99   | 1.51%             | 2026-04-15      | Fixed         | 0.12%                 | No            |                  2 | On Loan: No      |
| Extended Stay America Trust           | Extended Stay America Trust 2021-ESH                                                                                               | CUSIP: 30227FAA8<br>LEI: N/A                  | Long             | ABS-MBS          | CORP              | US        |   2783858 | PA      | $2782193.03   | 0.70%             | 2038-07-15      | Floating      | 5.52%                 | No            |                  2 | On Loan: No      |
| United States Treasury                | U.S. Treasury Inflation-Indexed Bonds                                                                                              | CUSIP: 912810PZ5<br>LEI: 254900HROIFWPRGM1V77 | Long             | DBT              | UST               | US        |  17831520 | PA      | $18675356.74  | 4.68%             | 2029-01-15      | Fixed         | 2.50%                 | No            |                  2 | On Loan: No      |
| United States Treasury                | U.S. Treasury Inflation-Indexed Notes                                                                                              | CUSIP: 912828Y38<br>LEI: 254900HROIFWPRGM1V77 | Long             | DBT              | UST               | US        |  13980670 | PA      | $13882388.41  | 3.48%             | 2028-07-15      | Fixed         | 0.75%                 | No            |                  2 | On Loan: No      |
| United States Treasury                | U.S. Treasury Inflation-Indexed Notes                                                                                              | CUSIP: 91282CKL4<br>LEI: 254900HROIFWPRGM1V77 | Long             | DBT              | UST               | US        |  23207625 | PA      | $23969502.78  | 6.01%             | 2029-04-15      | Fixed         | 2.12%                 | No            |                  2 | On Loan: No      |
| United States Treasury                | U.S. Treasury Inflation-Indexed Bonds                                                                                              | CUSIP: 912810FD5<br>LEI: 254900HROIFWPRGM1V77 | Long             | DBT              | UST               | US        |  20119704 | PA      | $21609164.68  | 5.42%             | 2028-04-15      | Fixed         | 3.62%                 | No            |                  2 | On Loan: No      |
| Eaton Vance Ultra-Short Income ETF    | Eaton Vance Ultra-Short Income ETF                                                                                                 | CUSIP: 61774R700<br>LEI: 254900V7QBF5XYWO0K24 | Long             | EC               | RF                | US        |     96000 | NS      | $4874400.00   | 1.22%             |  |  |  | No            |                  1 | On Loan: No      |
| United States Treasury                | U.S. Treasury Inflation-Indexed Notes                                                                                              | CUSIP: 912828Z37<br>LEI: 254900HROIFWPRGM1V77 | Long             | DBT              | UST               | US        |  11780095 | PA      | $11126835.96  | 2.79%             | 2030-01-15      | Fixed         | 0.12%                 | No            |                  2 | On Loan: No      |
| COMM Mortgage Trust                   | COMM 2013-CCRE11 Mortgage Trust                                                                                                    | CUSIP: 12626LAY8<br>LEI: 549300BCCWSDWINK2593 | Long             | ABS-MBS          | CORP              | US        |    361931 | PA      | $347379.34    | 0.09%             | 2050-08-10      | Variable      | 4.61%                 | No            |                  2 | On Loan: No      |
| United States Treasury                | U.S. Treasury Inflation-Indexed Notes                                                                                              | CUSIP: 912828V49<br>LEI: 254900HROIFWPRGM1V77 | Long             | DBT              | UST               | US        |  20207169 | PA      | $20074849.43  | 5.03%             | 2027-01-15      | Fixed         | 0.38%                 | No            |                  2 | On Loan: No      |
| LCH Ltd.                              | Long: BEV55L8D6 IRS USD R V 12MUSCPI 1 CCPINFLATIONZERO / Short: BEV55L8D6 IRS USD P F  3.60900 2 CCPINFLATIONZERO                 | CUSIP: 000000000<br>LEI: F226TOH6YD6XJB17KS62 | N/A              | DIR              |  | US        |  30000000 | OU      | $111672.00    | 0.03%             |  |  |  | No            |                  2 | On Loan: No      |
| LCH Ltd.                              | Long: BMIEHCL38 IRS USD R V 12MUSCPI BMIEHCL53 CCPINFLATIONZERO / Short: BMIEHCL38 IRS USD P F  2.63850 BMIEHCL46 CCPINFLATIONZERO | CUSIP: 000000000<br>LEI: F226TOH6YD6XJB17KS62 | N/A              | DIR              |  | US        |  20000000 | OU      | $-78304.00    | -0.02%            |  |  |  | No            |                  2 | On Loan: No      |
| Eaton Vance Short Duration Income ETF | Eaton Vance Short Duration Income ETF                                                                                              | CUSIP: 61774R825<br>LEI: 254900H1WCGW58VEGZ62 | Long             | EC               | RF                | US        |    186000 | NS      | $9469260.00   | 2.37%             |  |  |  | No            |                  1 | On Loan: No      |
| United States Treasury                | U.S. Treasury Inflation-Indexed Notes                                                                                              | CUSIP: 9128282L3<br>LEI: 254900HROIFWPRGM1V77 | Long             | DBT              | UST               | US        |  20867360 | PA      | $20729752.07  | 5.20%             | 2027-07-15      | Fixed         | 0.38%                 | No            |                  2 | On Loan: No      |
| LCH Ltd.                              | Long: BEV4Z2GN7 IRS USD R V 12MUSCPI 1 CCPINFLATIONZERO / Short: BEV4Z2GN7 IRS USD P F  3.23900 2 CCPINFLATIONZERO                 | CUSIP: 000000000<br>LEI: F226TOH6YD6XJB17KS62 | N/A              | DIR              |  | US        |  15000000 | OU      | $562183.50    | 0.14%             |  |  |  | No            |                  2 | On Loan: No      |
| COMM Mortgage Trust                   | COMM 2015-CCRE22 Mortgage Trust                                                                                                    | CUSIP: 12592XAG1<br>LEI: N/A                  | Long             | ABS-MBS          | CORP              | US        |   1000000 | PA      | $763036.90    | 0.19%             | 2048-03-10      | Variable      | 4.04%                 | No            |                  2 | On Loan: No      |
| LAD Auto Receivables Trust            | LAD Auto Receivables Trust 2022-1                                                                                                  | CUSIP: 501687AA5<br>LEI: N/A                  | Long             | ABS-O            | CORP              | US        |    175909 | PA      | $176073.08    | 0.04%             | 2027-06-15      | Fixed         | 5.21%                 | No            |                  2 | On Loan: No      |
| LCH Ltd.                              | Long: BMIETKTH8 IRS USD R V 12MUSCPI BMIETKTK1 CCPINFLATIONZERO / Short: BMIETKTH8 IRS USD P F  2.36458 BMIETKTJ4 CCPINFLATIONZERO | CUSIP: 000000000<br>LEI: F226TOH6YD6XJB17KS62 | N/A              | DIR              |  | US        |  15000000 | OU      | $68676.00     | 0.02%             |  |  |  | No            |                  2 | On Loan: No      |
| United States Treasury                | U.S. Treasury Inflation-Indexed Notes                                                                                              | CUSIP: 91282CGW5<br>LEI: 254900HROIFWPRGM1V77 | Long             | DBT              | UST               | US        |  23187134 | PA      | $23300135.80  | 5.84%             | 2028-04-15      | Fixed         | 1.25%                 | No            |                  2 | On Loan: No      |
| Morgan Stanley & Co. LLC              | Morgan Stanley Institutional Liquidity Funds - Government Portfolio                                                                | CUSIP: 61747C707<br>LEI: 549300BI6Y5SI6BYPB26 | Long             | STIV             | RF                | US        |  19820080 | NS      | $19820079.64  | 4.97%             |  |  |  | No            |                  1 | On Loan: No      |
| United States Treasury                | U.S. Treasury Inflation-Indexed Bonds                                                                                              | CUSIP: 912810PV4<br>LEI: 254900HROIFWPRGM1V77 | Long             | DBT              | UST               | US        |   9137220 | PA      | $9326929.70   | 2.34%             | 2028-01-15      | Fixed         | 1.75%                 | No            |                  2 | On Loan: No      |
| LCH Ltd.                              | Long: BEV4L52J9 IRS USD R V 12MUSCPI 1 CCPINFLATIONZERO / Short: BEV4L52J9 IRS USD P F  2.54500 2 CCPINFLATIONZERO                 | CUSIP: 000000000<br>LEI: F226TOH6YD6XJB17KS62 | N/A              | DIR              |  | US        |  10000000 | OU      | $1138847.00   | 0.29%             |  |  |  | No            |                  2 | On Loan: No      |
| LCH Ltd.                              | Long: BEV53C5Y5 IRS USD R V 12MUSCPI 1 CCPINFLATIONZERO / Short: BEV53C5Y5 IRS USD P F  2.82250 2 CCPINFLATIONZERO                 | CUSIP: 000000000<br>LEI: F226TOH6YD6XJB17KS62 | N/A              | DIR              |  | US        |  20000000 | OU      | $1054174.00   | 0.26%             |  |  |  | No            |                  2 | On Loan: No      |
| United States Treasury                | U.S. Treasury Inflation-Indexed Notes                                                                                              | CUSIP: 9128283R9<br>LEI: 254900HROIFWPRGM1V77 | Long             | DBT              | UST               | US        |  18754155 | PA      | $18521002.41  | 4.64%             | 2028-01-15      | Fixed         | 0.50%                 | No            |                  2 | On Loan: No      |
| Eaton Vance Total Return Bond ETF     | Eaton Vance Total Return Bond ETF                                                                                                  | CUSIP: 61774R841<br>LEI: 254900IQ3M4DXR8SC125 | Long             | EC               | RF                | US        |     96500 | NS      | $4887725.00   | 1.23%             |  |  |  | No            |                  1 | On Loan: No      |
| United States Treasury                | U.S. Treasury Inflation-Indexed Notes                                                                                              | CUSIP: 9128285W6<br>LEI: 254900HROIFWPRGM1V77 | Long             | DBT              | UST               | US        |   7328242 | PA      | $7243341.24   | 1.82%             | 2029-01-15      | Fixed         | 0.88%                 | No            |                  2 | On Loan: No      |
| United States Treasury                | U.S. Treasury Inflation-Indexed Notes                                                                                              | CUSIP: 91282CDC2<br>LEI: 254900HROIFWPRGM1V77 | Long             | DBT              | UST               | US        |  13776736 | PA      | $13704718.80  | 3.43%             | 2026-10-15      | Fixed         | 0.12%                 | No            |                  2 | On Loan: No      |
| United States Treasury                | U.S. Treasury Inflation-Indexed Notes                                                                                              | CUSIP: 91282CNB3<br>LEI: 254900HROIFWPRGM1V77 | Long             | DBT              | UST               | US        |   8017760 | PA      | $8099406.21   | 2.03%             | 2030-04-15      | Fixed         | 1.62%                 | No            |                  2 | On Loan: No      |
| MVW 2020-1 LLC                        | MVW 2020-1 LLC                                                                                                                     | CUSIP: 55400EAA7<br>LEI: N/A                  | Long             | ABS-O            | CORP              | US        |     21325 | PA      | $20640.91     | 0.01%             | 2037-10-20      | Fixed         | 1.74%                 | No            |                  2 | On Loan: No      |
| Springcastle SPV                      | SpringCastle America Funding LLC                                                                                                   | CUSIP: 85022WAP9<br>LEI: N/A                  | Long             | ABS-O            | CORP              | US        |    370507 | PA      | $347118.55    | 0.09%             | 2037-09-25      | Fixed         | 1.97%                 | No            |                  2 | On Loan: No      |
| United States Treasury                | U.S. Treasury Inflation-Indexed Bonds                                                                                              | CUSIP: 912810FH6<br>LEI: 254900HROIFWPRGM1V77 | Long             | DBT              | UST               | US        |  12614420 | PA      | $13891182.97  | 3.48%             | 2029-04-15      | Fixed         | 3.88%                 | No            |                  2 | On Loan: No      |
| United States Treasury                | U.S. Treasury Inflation-Indexed Notes                                                                                              | CUSIP: 91282CLV1<br>LEI: 254900HROIFWPRGM1V77 | Long             | DBT              | UST               | US        |  17743600 | PA      | $18040335.09  | 4.52%             | 2029-10-15      | Fixed         | 1.62%                 | No            |                  2 | On Loan: No      |
| United States Treasury                | U.S. Treasury Inflation-Indexed Notes                                                                                              | CUSIP: 912828ZZ6<br>LEI: 254900HROIFWPRGM1V77 | Long             | DBT              | UST               | US        |   4355155 | PA      | $4091395.53   | 1.03%             | 2030-07-15      | Fixed         | 0.12%                 | No            |                  2 | On Loan: No      |
| United States Treasury                | U.S. Treasury Inflation-Indexed Notes                                                                                              | CUSIP: 91282CEJ6<br>LEI: 254900HROIFWPRGM1V77 | Long             | DBT              | UST               | US        |  22598800 | PA      | $22282680.98  | 5.58%             | 2027-04-15      | Fixed         | 0.12%                 | No            |                  2 | On Loan: No      |
| LCH Ltd.                              | Long: BEV51CNB7 IRS USD R V 12MUSCPI 1 CCPINFLATIONZERO / Short: BEV51CNB7 IRS USD P F  2.99875 2 CCPINFLATIONZERO                 | CUSIP: 000000000<br>LEI: F226TOH6YD6XJB17KS62 | N/A              | DIR              |  | US        |  20000000 | OU      | $1024616.00   | 0.26%             |  |  |  | No            |                  2 | On Loan: No      |
| Coinstar Funding, LLC                 | Coinstar Funding LLC Series 2017-1                                                                                                 | CUSIP: 19260MAA4<br>LEI: N/A                  | Long             | ABS-O            | CORP              | US        |    708400 | PA      | $624745.04    | 0.16%             | 2047-04-25      | Fixed         | 5.22%                 | No            |                  2 | On Loan: No      |
| United States Treasury                | U.S. Treasury Inflation-Indexed Notes                                                                                              | CUSIP: 912828S50<br>LEI: 254900HROIFWPRGM1V77 | Long             | DBT              | UST               | US        |  10647760 | PA      | $10620493.75  | 2.66%             | 2026-07-15      | Fixed         | 0.12%                 | No            |                  2 | On Loan: No      |

### Signature

**Date Signed:** 2025-05-21

**Name of Applicant:** Short Duration Inflation-Protected Income Portfolio

**Signature:** James Kirchner

**Name of Signer:** James Kirchner

**Title:** Treasurer