# EDGAR Filing Document

**Accession Number:** 0001928846
**File Stem:** 0001410368-26-064357
**Filing Date:** 2026-6
**Character Count:** 19104
**Document Hash:** aad3175db00e3e3f52f8a10e80221ecc
**Contains OCR:** False
**Source Format:** 

## Filing Content

## Filing Summary
**0001410368-26-064357.hdr.sgml**: 20260624

**ACCESSION NUMBER**: 0001410368-26-064357

**CONFORMED SUBMISSION TYPE**: NPORT-P

**PUBLIC DOCUMENT COUNT**: 1

**CONFORMED PERIOD OF REPORT**: 20260430

**FILED AS OF DATE**: 20260624

**DATE AS OF CHANGE**: 20260624

**PERIOD START**: 20261031

**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:** 261113358

**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:** 2026-10-31

- **b. Date as of which information is reported:** 2026-04-30

**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:** $420583077.56

**Total Liabilities:** $268525.25

**Net Assets:** $420314552.31

**Cash Not Reported:** $878353.66

**Currency Risk Metrics (dv01):**

- 

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

- **3-Month:** -0.83000000 | **1-Year:** -16.85000000 | **5-Year:** -95.50000000 | **10-Year:** -390.12000000 | **30-Year:** -170.88000000

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

- **3-Month:** -0.72000000 | **1-Year:** -12.90000000 | **5-Year:** -71.36000000 | **10-Year:** -23.48000000 | **30-Year:** 0.00000000

**Monthly Return Information**

| Class               | Month 1 Return (%)   | Month 2 Return (%)   | Month 3 Return (%)   |
|:---|:---|:---|:---|
| Class ID C000237224 | 0.32%                | -0.15%               | 1.12%                |

**Monthly Gains & Losses**

| Period   | Net Realized Gain/Loss   | Net Unrealized Appreciation/Depreciation   |
|:---|:---|:---|
| Month 1  | $-33866.41               | $1445933.19                                |
| Month 2  | $46600.07                | $-2891358.92                               |
| Month 3  | $-281076.39              | $2005761.57                                |

### 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        |  12055571 | PA      | $12261568.69  | 2.92%             | 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        |  33068630 | PA      | $34327409.56  | 8.17%             | 2028-10-15      | Fixed         | 2.38%                 | No            |                  2 | On Loan: No      |
| LCH Ltd.                                | Long: BMIG3KDU9 IRS USD R V 12MUSCPI BMIG3KDW5 CCPINFLATIONZERO / Short: BMIG3KDU9 IRS USD P F  2.40900 BMIG3KDV7 CCPINFLATIONZERO | CUSIP: 000000000<br>LEI: F226TOH6YD6XJB17KS62 | N/A              | DIR              |  | US        |  11400000 | OU      | $127224.00    | 0.03%             |  |  |  | No            |                  2 | On Loan: No      |
| LCH Ltd.                                | Long: BMIF24GE1 IRS USD R V 12MUSCPI BMIF24GG6 CCPINFLATIONZERO / Short: BMIF24GE1 IRS USD P F  2.63900 BMIF24GF8 CCPINFLATIONZERO | CUSIP: 000000000<br>LEI: F226TOH6YD6XJB17KS62 | N/A              | DIR              |  | US        |  15000000 | OU      | $135012.00    | 0.03%             |  |  |  | No            |                  2 | On Loan: No      |
| Chicago Board of Trade                  | US 5YR NOTE (CBT) JUN26                                                                                                            | CUSIP: 000000000<br>LEI: 549300EX04Q2QBFQTQ27 | N/A              | DIR              |  | US        |       223 | NC      | $-284272.21   | -0.07%            |  |  |  | No            |                  1 | On Loan: No      |
| Acacia LLC                              | Acacia 2025-1 LLC                                                                                                                  | CUSIP: 00401PAA7<br>LEI: N/A                  | Long             | ABS-O            | CORP              | US        |    556645 | PA      | $556493.59    | 0.13%             | 2037-11-15      | Fixed         | 5.24%                 | 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      | $107616.00    | 0.03%             |  |  |  | No            |                  2 | On Loan: No      |
| United States Treasury                  | U.S. Treasury Inflation-Indexed Notes                                                                                              | CUSIP: 9128287D6<br>LEI: 254900HROIFWPRGM1V77 | Long             | DBT              | UST               | US        |  11985187 | PA      | $11727276.94  | 2.79%             | 2029-07-15      | Fixed         | 0.25%                 | No            |                  2 | On Loan: No      |
| Chicago Board of Trade                  | US 2YR NOTE (CBT) JUN26                                                                                                            | CUSIP: 000000000<br>LEI: 549300EX04Q2QBFQTQ27 | N/A              | DIR              |  | US        |       219 | NC      | $-334996.64   | -0.08%            |  |  |  | No            |                  1 | On Loan: No      |
| United States Treasury                  | U.S. Treasury Inflation-Indexed Bonds                                                                                              | CUSIP: 912810PZ5<br>LEI: 254900HROIFWPRGM1V77 | Long             | DBT              | UST               | US        |  18261840 | PA      | $19011953.84  | 4.52%             | 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        |  14276388 | PA      | $14287882.15  | 3.40%             | 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        |  36549364 | PA      | $37682476.52  | 8.97%             | 2029-04-15      | Fixed         | 2.12%                 | No            |                  2 | On Loan: No      |
| LCH Ltd.                                | Long: BMIGH2ZQ9 IRS USD R V 12MUSCPI BMIGH2ZS5 CCPINFLATIONZERO / Short: BMIGH2ZQ9 IRS USD P F  2.50900 BMIGH2ZR7 CCPINFLATIONZERO | CUSIP: 000000000<br>LEI: F226TOH6YD6XJB17KS62 | N/A              | DIR              |  | US        |   8000000 | OU      | $91736.00     | 0.02%             |  |  |  | No            |                  2 | On Loan: No      |
| United States Treasury                  | U.S. Treasury Inflation-Indexed Bonds                                                                                              | CUSIP: 912810FD5<br>LEI: 254900HROIFWPRGM1V77 | Long             | DBT              | UST               | US        |  24522237 | PA      | $25824072.20  | 6.14%             | 2028-04-15      | Fixed         | 3.62%                 | No            |                  2 | On Loan: No      |
| United States Treasury                  | U.S. Treasury Inflation-Indexed Notes                                                                                              | CUSIP: 912828Z37<br>LEI: 254900HROIFWPRGM1V77 | Long             | DBT              | UST               | US        |  14820200 | PA      | $14278882.07  | 3.40%             | 2030-01-15      | Fixed         | 0.12%                 | 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        |  17000000 | OU      | $102992.80    | 0.02%             |  |  |  | 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      | $153920.00    | 0.04%             |  |  |  | No            |                  2 | On Loan: No      |
| United States Treasury                  | U.S. Treasury Inflation-Indexed Notes                                                                                              | CUSIP: 9128282L3<br>LEI: 254900HROIFWPRGM1V77 | Long             | DBT              | UST               | US        |  14171671 | PA      | $14195028.51  | 3.38%             | 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      | $632769.00    | 0.15%             |  |  |  | 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      | $265120.50    | 0.06%             |  |  |  | No            |                  2 | On Loan: No      |
| United States Treasury                  | U.S. Treasury Inflation-Indexed Notes                                                                                              | CUSIP: 91282CBF7<br>LEI: 254900HROIFWPRGM1V77 | Long             | DBT              | UST               | US        |  38242861 | PA      | $36250324.25  | 8.62%             | 2031-01-15      | Fixed         | 0.12%                 | No            |                  2 | On Loan: No      |
| United States Treasury                  | U.S. Treasury Inflation-Indexed Notes                                                                                              | CUSIP: 91282CGW5<br>LEI: 254900HROIFWPRGM1V77 | Long             | DBT              | UST               | US        |  35974132 | PA      | $36216172.22  | 8.62%             | 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        |   7934932 | NS      | $7934932.44   | 1.89%             |  |  |  | No            |                  1 | 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      | $1196694.00   | 0.28%             |  |  |  | No            |                  2 | On Loan: No      |
| United States Treasury                  | U.S. Treasury Inflation-Indexed Notes                                                                                              | CUSIP: 9128285W6<br>LEI: 254900HROIFWPRGM1V77 | Long             | DBT              | UST               | US        |  20224907 | PA      | $20176771.92  | 4.80%             | 2029-01-15      | Fixed         | 0.88%                 | No            |                  2 | On Loan: No      |
| United States Treasury                  | U.S. Treasury Inflation-Indexed Notes                                                                                              | CUSIP: 91282CNB3<br>LEI: 254900HROIFWPRGM1V77 | Long             | DBT              | UST               | US        |  16422400 | PA      | $16685289.12  | 3.97%             | 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        |     14445 | PA      | $14334.52     | 0.00%             | 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        |    264422 | PA      | $249295.08    | 0.06%             | 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        |  36023619 | PA      | $38976324.92  | 9.27%             | 2029-04-15      | Fixed         | 3.88%                 | No            |                  2 | On Loan: No      |
| United States Treasury                  | U.S. Treasury Inflation-Indexed Notes                                                                                              | CUSIP: 91282CPH8<br>LEI: 254900HROIFWPRGM1V77 | Long             | DBT              | UST               | US        |  22373715 | PA      | $22330136.37  | 5.31%             | 2030-10-15      | Fixed         | 1.12%                 | No            |                  2 | On Loan: No      |
| Saluda Grade Alternative Mortgage Trust | Saluda Grade Alternative Mortgage Trust 2025-LOC5                                                                                  | CUSIP: 79581XAB4<br>LEI: 213800ETGZN4SIG56R83 | Long             | ABS-O            | CORP              | US        |    665158 | PA      | $669429.81    | 0.16%             | 2055-10-25      | Floating      | 5.25%                 | No            |                  2 | On Loan: No      |
| United States Treasury                  | U.S. Treasury Inflation-Indexed Notes                                                                                              | CUSIP: 91282CLV1<br>LEI: 254900HROIFWPRGM1V77 | Long             | DBT              | UST               | US        |  17756469 | PA      | $18134849.06  | 4.31%             | 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        |  36676081 | PA      | $35177008.71  | 8.37%             | 2030-07-15      | Fixed         | 0.12%                 | No            |                  2 | On Loan: No      |

### Signature

**Date Signed:** 2026-05-26

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

**Signature:** James Kirchner

**Name of Signer:** James Kirchner

**Title:** Treasurer