# EDGAR Filing Document

**Accession Number:** 0001107414
**File Stem:** 0001410368-26-020039
**Filing Date:** 2026-2
**Character Count:** 18881
**Document Hash:** 4c18854248e343630841ae02cf253cec
**Contains OCR:** False
**Source Format:** 

## Filing Content

## Filing Summary
**0001410368-26-020039.hdr.sgml**: 20260226

**ACCESSION NUMBER**: 0001410368-26-020039

**CONFORMED SUBMISSION TYPE**: NPORT-P

**PUBLIC DOCUMENT COUNT**: 1

**CONFORMED PERIOD OF REPORT**: 20251231

**FILED AS OF DATE**: 20260226

**DATE AS OF CHANGE**: 20260226

**PERIOD START**: 20251231

**FILER**: 

**COMPANY DATA:**
- **COMPANY CONFORMED NAME:** STATE STREET INSTITUTIONAL INVESTMENT TRUST
- **CENTRAL INDEX KEY:** 0001107414

**ORGANIZATION NAME:**
- **EIN:** 046910804
- **STATE OF INCORPORATION:** MA
- **FISCAL YEAR END:** 1231

**FILING VALUES:**
- **FORM TYPE:** NPORT-P
- **SEC ACT:** 1940 Act
- **SEC FILE NUMBER:** 811-09819
- **FILM NUMBER:** 26689859

**BUSINESS ADDRESS:**
- **STREET 1:** ONE CONGRESS STREET
- **CITY:** BOSTON
- **STATE:** MA
- **ZIP:** 02114
- **BUSINESS PHONE:** 6176643920

**MAIL ADDRESS:**
- **STREET 1:** ONE CONGRESS STREET
- **CITY:** BOSTON
- **STATE:** MA
- **ZIP:** 02114

## Series and Classes Contracts Data

### STATE STREET HEDGED INTERNATIONAL DEVELOPED EQUITY INDEX FUND (Series ID: S000049192)

| Class ID   | Class Name   | Ticker Symbol   |
|:---|:---|:---|
| C000155088 | Class K      | SSHQX           |

## Form NPORT-P: Monthly Portfolio Investments Report

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

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

- **a. Name of Registrant:** STATE STREET INSTITUTIONAL INVESTMENT TRUST

- **b. Investment Company Act file number:** 811-09819

- **c. CIK number of Registrant:** 0001107414

- **d. LEI of Registrant:** 549300P1E098W6ES7M39

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

  - **Street Address 1:** One Congress Street

  - **City:** Boston

  - **State:** MA

  - **Foreign country:** US

  - **Zip / Postal Code:** 02114

  - **Telephone number:** 617-664-7037

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

- **a. Name of Series:** STATE STREET HEDGED INTERNATIONAL DEVELOPED EQUITY INDEX FUND

- **b. EDGAR series identifier (if any):** S000049192

- **c. LEI of Series:** 549300VQRK743XU60338

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

- **a. Date of fiscal year-end:** 2025-12-31

- **b. Date as of which information is reported:** 2025-12-31

**Item A.4. Final filing**

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

### Fund Information

**Total Assets:** $4318209851.16

**Total Liabilities:** $38470292.60

**Net Assets:** $4279739558.56

**Cash Not Reported:** $2857082.27

**Monthly Return Information**

| Class               | Month 1 Return (%)   | Month 2 Return (%)   | Month 3 Return (%)   |
|:---|:---|:---|:---|
| Class ID C000155088 | 3.50%                | 0.73%                | 2.27%                |

**Monthly Gains & Losses**

| Period   | Net Realized Gain/Loss   | Net Unrealized Appreciation/Depreciation   |
|:---|:---|:---|
| Month 1  | $3369437.64              | $0.00                                      |
| Month 2  | $94670170.06             | $0.00                                      |
| Month 3  | $3574198.55              | $0.00                                      |

### 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   |
|:---|:---|:---|:---|:---|:---|:---|---:|:---|:---|:---|:---|:---|:---|:---|:---|:---|
| Westpac Banking Corp.        | PURCHASED USD / SOLD JPY                                    | CUSIP: 000000000<br>LEI: EN5TNI6CI43VEPAMHL14 | N/A              | DFE              |  | US        |         1 | NC      | $7362071.69    | 0.17%             |  |  |  | No            | 2                  | On Loan: No      |
| Barclays Bank PLC            | PURCHASED NOK / SOLD USD                                    | CUSIP: 000000000<br>LEI: G5GSEF7VJP5I7OUK5573 | N/A              | DFE              |  | NO        |         1 | NC      | $1594.73       | 0.00%             |  |  |  | No            | 2                  | On Loan: No      |
| Barclays Bank PLC            | PURCHASED USD / SOLD ILS                                    | CUSIP: 000000000<br>LEI: G5GSEF7VJP5I7OUK5573 | N/A              | DFE              |  | US        |         1 | NC      | $-10851.63     | -0.00%            |  |  |  | No            | 2                  | On Loan: No      |
| Barclays Bank PLC            | PURCHASED USD / SOLD SEK                                    | CUSIP: 000000000<br>LEI: G5GSEF7VJP5I7OUK5573 | N/A              | DFE              |  | US        |         1 | NC      | $-21413.58     | -0.00%            |  |  |  | No            | 2                  | On Loan: No      |
| JPMorgan Chase Bank NA       | PURCHASED USD / SOLD SGD                                    | CUSIP: 000000000<br>LEI: 7H6GLXDRUGQFU57RNE97 | N/A              | DFE              |  | US        |         1 | NC      | $-5056.03      | -0.00%            |  |  |  | No            | 2                  | On Loan: No      |
| JPMorgan Chase Bank NA       | PURCHASED USD / SOLD HKD                                    | CUSIP: 000000000<br>LEI: 7H6GLXDRUGQFU57RNE97 | N/A              | DFE              |  | US        |         1 | NC      | $1707.43       | 0.00%             |  |  |  | No            | 2                  | On Loan: No      |
| JPMorgan Chase Bank NA       | PURCHASED USD / SOLD JPY                                    | CUSIP: 000000000<br>LEI: 7H6GLXDRUGQFU57RNE97 | N/A              | DFE              |  | US        |         1 | NC      | $177926.74     | 0.00%             |  |  |  | No            | 2                  | On Loan: No      |
| JPMorgan Chase Bank NA       | PURCHASED AUD / SOLD USD                                    | CUSIP: 000000000<br>LEI: 7H6GLXDRUGQFU57RNE97 | N/A              | DFE              |  | AU        |         1 | NC      | $216326.69     | 0.01%             |  |  |  | No            | 2                  | On Loan: No      |
| Goldman Sachs Bank USA       | PURCHASED USD / SOLD CHF                                    | CUSIP: 000000000<br>LEI: KD3XUN7C6T14HNAYLU02 | N/A              | DFE              |  | US        |         1 | NC      | $-123706.89    | -0.00%            |  |  |  | No            | 2                  | On Loan: No      |
| Goldman Sachs Bank USA       | PURCHASED USD / SOLD EUR                                    | CUSIP: 000000000<br>LEI: KD3XUN7C6T14HNAYLU02 | N/A              | DFE              |  | US        |         1 | NC      | $-14557.95     | -0.00%            |  |  |  | No            | 2                  | On Loan: No      |
| Societe Generale SA          | PURCHASED USD / SOLD SEK                                    | CUSIP: 000000000<br>LEI: O2RNE8IBXP4R0TD8PU41 | N/A              | DFE              |  | US        |         1 | NC      | $-2770161.44   | -0.06%            |  |  |  | No            | 2                  | On Loan: No      |
| HSBC Bank USA NA             | PURCHASED USD / SOLD EUR                                    | CUSIP: 000000000<br>LEI: 1IE8VN30JCEQV1H4R804 | N/A              | DFE              |  | US        |         1 | NC      | $-7491736.50   | -0.18%            |  |  |  | No            | 2                  | On Loan: No      |
| Societe Generale SA          | PURCHASED USD / SOLD SGD                                    | CUSIP: 000000000<br>LEI: O2RNE8IBXP4R0TD8PU41 | N/A              | DFE              |  | US        |         1 | NC      | $-263138.71    | -0.01%            |  |  |  | No            | 2                  | On Loan: No      |
| Royal Bank of Canada         | PURCHASED USD / SOLD GBP                                    | CUSIP: 000000000<br>LEI: ES7IP3U3RHIGC71XBU11 | N/A              | DFE              |  | US        |         1 | NC      | $-9391010.78   | -0.22%            |  |  |  | No            | 2                  | On Loan: No      |
| Barclays Bank PLC            | PURCHASED USD / SOLD EUR                                    | CUSIP: 000000000<br>LEI: G5GSEF7VJP5I7OUK5573 | N/A              | DFE              |  | US        |         1 | NC      | $-7485360.84   | -0.17%            |  |  |  | No            | 2                  | On Loan: No      |
| UBS AG                       | PURCHASED USD / SOLD CHF                                    | CUSIP: 000000000<br>LEI: BFM8T61CT2L1QCEMIK50 | N/A              | DFE              |  | US        |         1 | NC      | $-3621229.76   | -0.08%            |  |  |  | No            | 2                  | On Loan: No      |
| Societe Generale SA          | PURCHASED USD / SOLD AUD                                    | CUSIP: 000000000<br>LEI: O2RNE8IBXP4R0TD8PU41 | N/A              | DFE              |  | US        |         1 | NC      | $-4651836.64   | -0.11%            |  |  |  | No            | 2                  | On Loan: No      |
| Societe Generale SA          | PURCHASED USD / SOLD NZD                                    | CUSIP: 000000000<br>LEI: O2RNE8IBXP4R0TD8PU41 | N/A              | DFE              |  | US        |         1 | NC      | $-2593.06      | -0.00%            |  |  |  | No            | 2                  | On Loan: No      |
| Societe Generale SA          | PURCHASED USD / SOLD DKK                                    | CUSIP: 000000000<br>LEI: O2RNE8IBXP4R0TD8PU41 | N/A              | DFE              |  | US        |         1 | NC      | $-765520.00    | -0.02%            |  |  |  | No            | 2                  | On Loan: No      |
| Societe Generale SA          | PURCHASED USD / SOLD ILS                                    | CUSIP: 000000000<br>LEI: O2RNE8IBXP4R0TD8PU41 | N/A              | DFE              |  | US        |         1 | NC      | $-562413.69    | -0.01%            |  |  |  | No            | 2                  | On Loan: No      |
| Societe Generale SA          | PURCHASED USD / SOLD NOK                                    | CUSIP: 000000000<br>LEI: O2RNE8IBXP4R0TD8PU41 | N/A              | DFE              |  | US        |         1 | NC      | $-64078.53     | -0.00%            |  |  |  | No            | 2                  | On Loan: No      |
| Societe Generale SA          | PURCHASED USD / SOLD HKD                                    | CUSIP: 000000000<br>LEI: O2RNE8IBXP4R0TD8PU41 | N/A              | DFE              |  | US        |         1 | NC      | $50597.71      | 0.00%             |  |  |  | No            | 2                  | On Loan: No      |
| Societe Generale SA          | PURCHASED USD / SOLD CHF                                    | CUSIP: 000000000<br>LEI: O2RNE8IBXP4R0TD8PU41 | N/A              | DFE              |  | US        |         1 | NC      | $-30520.58     | -0.00%            |  |  |  | No            | 2                  | On Loan: No      |
| Citibank NA                  | PURCHASED USD / SOLD AUD                                    | CUSIP: 000000000<br>LEI: E57ODZWZ7FF32TWEFA76 | N/A              | DFE              |  | US        |         1 | NC      | $-30117.77     | -0.00%            |  |  |  | No            | 2                  | On Loan: No      |
| Barclays Bank PLC            | PURCHASED USD / SOLD SEK                                    | CUSIP: 000000000<br>LEI: G5GSEF7VJP5I7OUK5573 | N/A              | DFE              |  | US        |         1 | NC      | $-20653.07     | -0.00%            |  |  |  | No            | 2                  | On Loan: No      |
| Barclays Bank PLC            | PURCHASED USD / SOLD DKK                                    | CUSIP: 000000000<br>LEI: G5GSEF7VJP5I7OUK5573 | N/A              | DFE              |  | US        |         1 | NC      | $-5213.01      | -0.00%            |  |  |  | No            | 2                  | On Loan: No      |
| Morgan Stanley & Co. LLC     | PURCHASED USD / SOLD HKD                                    | CUSIP: 000000000<br>LEI: 9R7GPTSO7KV3UQJZQ078 | N/A              | DFE              |  | US        |         1 | NC      | $509.96        | 0.00%             |  |  |  | No            | 2                  | On Loan: No      |
| Societe Generale SA          | PURCHASED USD / SOLD GBP                                    | CUSIP: 000000000<br>LEI: O2RNE8IBXP4R0TD8PU41 | N/A              | DFE              |  | US        |         1 | NC      | $-83740.98     | -0.00%            |  |  |  | No            | 2                  | On Loan: No      |
| UBS AG                       | PURCHASED USD / SOLD JPY                                    | CUSIP: 000000000<br>LEI: BFM8T61CT2L1QCEMIK50 | N/A              | DFE              |  | US        |         1 | NC      | $61476.52      | 0.00%             |  |  |  | No            | 2                  | On Loan: No      |
| Societe Generale SA          | PURCHASED USD / SOLD EUR                                    | CUSIP: 000000000<br>LEI: O2RNE8IBXP4R0TD8PU41 | N/A              | DFE              |  | US        |         1 | NC      | $-101589.54    | -0.00%            |  |  |  | No            | 2                  | On Loan: No      |
| Societe Generale SA          | PURCHASED EUR / SOLD USD                                    | CUSIP: 000000000<br>LEI: O2RNE8IBXP4R0TD8PU41 | N/A              | DFE              |  | XX        |         1 | NC      | $17064.54      | 0.00%             |  |  |  | No            | 2                  | On Loan: No      |
| Societe Generale SA          | PURCHASED JPY / SOLD USD                                    | CUSIP: 000000000<br>LEI: O2RNE8IBXP4R0TD8PU41 | N/A              | DFE              |  | JP        |         1 | NC      | $-28287.02     | -0.00%            |  |  |  | No            | 2                  | On Loan: No      |
| UBS AG                       | PURCHASED CHF / SOLD USD                                    | CUSIP: 000000000<br>LEI: BFM8T61CT2L1QCEMIK50 | N/A              | DFE              |  | CH        |         1 | NC      | $5747.18       | 0.00%             |  |  |  | No            | 2                  | On Loan: No      |
| Societe Generale SA          | PURCHASED GBP / SOLD USD                                    | CUSIP: 000000000<br>LEI: O2RNE8IBXP4R0TD8PU41 | N/A              | DFE              |  | GB        |         1 | NC      | $10791.30      | 0.00%             |  |  |  | No            | 2                  | On Loan: No      |
| UBS AG                       | PURCHASED AUD / SOLD USD                                    | CUSIP: 000000000<br>LEI: BFM8T61CT2L1QCEMIK50 | N/A              | DFE              |  | AU        |         1 | NC      | $6310.78       | 0.00%             |  |  |  | No            | 2                  | On Loan: No      |
| Barclays Bank PLC            | PURCHASED HKD / SOLD USD                                    | CUSIP: 000000000<br>LEI: G5GSEF7VJP5I7OUK5573 | N/A              | DFE              |  | HK        |         1 | NC      | $-916.93       | -0.00%            |  |  |  | No            | N/A                | On Loan: No      |
| Societe Generale SA          | PURCHASED SGD / SOLD USD                                    | CUSIP: 000000000<br>LEI: O2RNE8IBXP4R0TD8PU41 | N/A              | DFE              |  | SG        |         1 | NC      | $-535.38       | -0.00%            |  |  |  | No            | N/A                | On Loan: No      |
| HSBC Bank USA NA             | PURCHASED SEK / SOLD USD                                    | CUSIP: 000000000<br>LEI: 1IE8VN30JCEQV1H4R804 | N/A              | DFE              |  | SE        |         1 | NC      | $-4087.32      | -0.00%            |  |  |  | No            | N/A                | On Loan: No      |
| Barclays Bank PLC            | PURCHASED DKK / SOLD USD                                    | CUSIP: 000000000<br>LEI: G5GSEF7VJP5I7OUK5573 | N/A              | DFE              |  | DK        |         1 | NC      | $-1136.10      | -0.00%            |  |  |  | No            | N/A                | On Loan: No      |
| Societe Generale SA          | PURCHASED CHF / SOLD USD                                    | CUSIP: 000000000<br>LEI: O2RNE8IBXP4R0TD8PU41 | N/A              | DFE              |  | CH        |         1 | NC      | $-14757.53     | -0.00%            |  |  |  | No            | N/A                | On Loan: No      |
| Societe Generale SA          | PURCHASED AUD / SOLD USD                                    | CUSIP: 000000000<br>LEI: O2RNE8IBXP4R0TD8PU41 | N/A              | DFE              |  | AU        |         1 | NC      | $-8694.95      | -0.00%            |  |  |  | No            | N/A                | On Loan: No      |
| Societe Generale SA          | PURCHASED GBP / SOLD USD                                    | CUSIP: 000000000<br>LEI: O2RNE8IBXP4R0TD8PU41 | N/A              | DFE              |  | GB        |         1 | NC      | $-21953.98     | -0.00%            |  |  |  | No            | N/A                | On Loan: No      |
| Societe Generale SA          | PURCHASED EUR / SOLD USD                                    | CUSIP: 000000000<br>LEI: O2RNE8IBXP4R0TD8PU41 | N/A              | DFE              |  | XX        |         1 | NC      | $-22507.37     | -0.00%            |  |  |  | No            | N/A                | On Loan: No      |
| Citibank NA                  | PURCHASED JPY / SOLD USD                                    | CUSIP: 000000000<br>LEI: E57ODZWZ7FF32TWEFA76 | N/A              | DFE              |  | JP        |         1 | NC      | $-41417.75     | -0.00%            |  |  |  | No            | N/A                | On Loan: No      |
| State Street Global Advisors | State Street Institutional US Government Money Market Fund  | CUSIP: 857492706<br>LEI: 549300BZ5TGIFZUZDZ37 | Long             | STIV             | RF                | US        | 171242559 | NS      | $171242558.85  | 4.00%             |  |  |  | No            | 1                  | On Loan: No      |
| ICE Futures U.S., Inc.       | MSCI EAFE MAR26                                             | CUSIP: 000000000<br>LEI: 5493004R83R1LVX2IL36 | N/A              | DE               |  | US        |      1235 | NC      | $1560202.84    | 0.04%             |  |  |  | No            | 1                  | On Loan: No      |
| SSgA Funds Management, Inc.  | State Street International Developed Equity Index Portfolio | CUSIP: 000000000<br>LEI: 549300RUQBA18CZVGT05 | Long             | EC               | RF                | US        |  18778503 | NS      | $4134087333.30 | 96.60%            |  |  |  | No            | 1                  | On Loan: No      |

### Signature

**Date Signed:** 2026-01-16

**Name of Applicant:** STATE STREET INSTITUTIONAL INVESTMENT TRUST

**Signature:** Arthur Jensen

**Name of Signer:** Arthur Jensen

**Title:** Deputy Treasurer