# EDGAR Filing Document

**Accession Number:** 0000356682
**File Stem:** 0001410368-25-028967
**Filing Date:** 2025-11
**Character Count:** 13319
**Document Hash:** 845d29af278e8212971088eb3546c838
**Contains OCR:** False
**Source Format:** 

## Filing Content

## Filing Summary
**0001410368-25-028967.hdr.sgml**: 20251124

**ACCESSION NUMBER**: 0001410368-25-028967

**CONFORMED SUBMISSION TYPE**: NPORT-P

**PUBLIC DOCUMENT COUNT**: 1

**CONFORMED PERIOD OF REPORT**: 20250930

**FILED AS OF DATE**: 20251124

**DATE AS OF CHANGE**: 20251124

**PERIOD START**: 20250930

**FILER**: 

**COMPANY DATA:**
- **COMPANY CONFORMED NAME:** Calvert Social Investment Fund
- **CENTRAL INDEX KEY:** 0000356682

**ORGANIZATION NAME:**
- **EIN:** 000000000
- **FISCAL YEAR END:** 0930

**FILING VALUES:**
- **FORM TYPE:** NPORT-P
- **SEC ACT:** 1940 Act
- **SEC FILE NUMBER:** 811-03334
- **FILM NUMBER:** 251509884

**BUSINESS ADDRESS:**
- **STREET 1:** 2050 M STREET NW
- **CITY:** WASHINGTON
- **STATE:** DC
- **ZIP:** 20036
- **BUSINESS PHONE:** 8002256265

**MAIL ADDRESS:**
- **STREET 1:** 2050 M STREET NW
- **CITY:** WASHINGTON
- **STATE:** DC
- **ZIP:** 20036

**FORMER COMPANY:**
- **FORMER CONFORMED NAME:** CALVERT SOCIAL INVESTMENT FUND
- **DATE OF NAME CHANGE:** 19920703

## Series and Classes Contracts Data

### Calvert Conservative Allocation Fund (Series ID: S000008721)

| Class ID   | Class Name                                    | Ticker Symbol   |
|:---|:---|:---|
| C000023770 | Class A                                       | CCLAX           |
| C000023771 | Class C                                       | CALCX           |
| C000170082 | Class I                                       | CFAIX           |
| C000235278 | Calvert Conservative Allocation Fund Class R6 | CAARX           |

## Form NPORT-P: Monthly Portfolio Investments Report

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

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

- **a. Name of Registrant:** Calvert Social Investment Fund

- **b. Investment Company Act file number:** 811-03334

- **c. CIK number of Registrant:** 0000356682

- **d. LEI of Registrant:** 549300V0NY9G3Y5OI796

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

  - **Street Address 1:** 2050 M Street NW

  - **City:** Washington

  - **State:** DC

  - **Foreign country:** US

  - **Zip / Postal Code:** 20036

  - **Telephone number:** 202-238-2200

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

- **a. Name of Series:** Calvert Conservative Allocation Fund

- **b. EDGAR series identifier (if any):** S000008721

- **c. LEI of Series:** 549300KT8RN5IFBZID29

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

- **a. Date of fiscal year-end:** 2025-09-30

- **b. Date as of which information is reported:** 2025-09-30

**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:** $229762786.15

**Total Liabilities:** $285111.22

**Net Assets:** $229477674.93

**Cash Not Reported:** $958959.37

**Monthly Return Information**

| Class               | Month 1 Return (%)   | Month 2 Return (%)   | Month 3 Return (%)   |
|:---|:---|:---|:---|
| Class ID C000023771 | -0.11%               | 1.76%                | 1.16%                |
| Class ID C000023770 | 0.00%                | 1.79%                | 1.24%                |
| Class ID C000170082 | 0.00%                | 1.79%                | 1.24%                |
| Class ID C000235278 | 0.00%                | 1.79%                | 1.25%                |

**Monthly Gains & Losses**

| Period   | Net Realized Gain/Loss   | Net Unrealized Appreciation/Depreciation   |
|:---|:---|:---|
| Month 1  | $815771.71               | $-1327041.15                               |
| Month 2  | $0.00                    | $3514881.55                                |
| Month 3  | $572617.69               | $1407224.52                                |

**Designated Index Information**

- **Index Name:** 65% Bloomberg US Agg / 25% Russell 3000 / 10% MSCI ACWI ex USA IMI

- **Index Identifier:** LERSMSWSD

### 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   |
|:---|:---|:---|:---|:---|:---|:---|---:|:---|:---|:---|:---|:---|:---|:---|---:|:---|
| Calvert Core Bond Fund                             | Calvert Core Bond Fund                                              | CUSIP: 131582330<br>LEI: 549300HEFY2HHDRM0E11 | Long             | EC               | RF                | US        |   1975431 | NS      | $31567383.03  | 13.76%            |  |  |  | No            |                  1 | On Loan: No      |
| Calvert Bond Fund                                  | Calvert Bond Fund                                                   | CUSIP: 131582322<br>LEI: 549300T75TF7NTCFI791 | Long             | EC               | RF                | US        |   4195096 | NS      | $62003519.91  | 27.02%            |  |  |  | No            |                  1 | On Loan: No      |
| Calvert US Mid Cap Core Responsible Index Fund     | Calvert US Mid Cap Core Responsible Index Fund                      | CUSIP: 131618456<br>LEI: 549300I74Z158YTBPO44 | Long             | EC               | RF                | US        |     25859 | NS      | $1157973.50   | 0.50%             |  |  |  | No            |                  1 | On Loan: No      |
| Chicago Board of Trade                             | US ULTRA BOND CBT DEC25                                             | CUSIP: 000000000<br>LEI: 549300EX04Q2QBFQTQ27 | N/A              | DIR              |  | US        |        27 | NC      | $90215.91     | 0.04%             |  |  |  | No            |                  1 | On Loan: No      |
| Calvert International Opportunities Fund           | Calvert International Opportunities Fund                            | CUSIP: 131649758<br>LEI: 549300125QOYCBC7IB51 | Long             | EC               | RF                | US        |    188488 | NS      | $3513418.44   | 1.53%             |  |  |  | No            |                  1 | On Loan: No      |
| Calvert US Large Cap Core Responsible Index Fund   | Calvert US Large Cap Core Responsible Index Fund                    | CUSIP: 131582298<br>LEI: 549300PO0F0AV64IR605 | Long             | EC               | RF                | US        |    387993 | NS      | $22166027.18  | 9.66%             |  |  |  | No            |                  1 | On Loan: No      |
| Calvert Mortgage Access Fund                       | Calvert Mortgage Access Fund                                        | CUSIP: 131582231<br>LEI: 549300O2JSVSVL35QD76 | Long             | EC               | RF                | US        |   1659710 | NS      | $16464321.81  | 7.17%             |  |  |  | No            |                  1 | On Loan: No      |
| Calvert High Yield Bond Fund                       | Calvert High Yield Bond Fund                                        | CUSIP: 131582272<br>LEI: 549300CCIV46L1T22Z08 | Long             | EC               | RF                | US        |    375498 | NS      | $9334870.06   | 4.07%             |  |  |  | No            |                  1 | On Loan: No      |
| Calvert Focused Value Fund                         | Calvert Focused Value Fund                                          | CUSIP: 131582132<br>LEI: 549300Z5XUUT6OW4YT43 | Long             | EC               | RF                | US        |    480268 | NS      | $5888082.81   | 2.57%             |  |  |  | No            |                  1 | On Loan: No      |
| Calvert US Large Cap Growth Responsible Index Fund | Calvert US Large Cap Growth Responsible Index Fund                  | CUSIP: 131618472<br>LEI: 5493000179G37BJVLO31 | Long             | EC               | RF                | US        |    128910 | NS      | $9749439.02   | 4.25%             |  |  |  | No            |                  1 | On Loan: No      |
| Chicago Board of Trade                             | US LONG BOND(CBT) DEC25                                             | CUSIP: 000000000<br>LEI: 549300EX04Q2QBFQTQ27 | N/A              | DIR              |  | US        |        24 | NC      | $57318.12     | 0.02%             |  |  |  | No            |                  1 | On Loan: No      |
| Calvert Small/Mid-Cap Fund                         | Calvert Small/Mid-Cap Fund                                          | CUSIP: 13161X717<br>LEI: 549300085L1NSA5LCU34 | Long             | EC               | RF                | US        |     45521 | NS      | $1190817.43   | 0.52%             |  |  |  | No            |                  1 | On Loan: No      |
| Calvert Emerging Markets Advancement Fund          | Calvert Emerging Markets Advancement Fund                           | CUSIP: 131649717<br>LEI: 549300OOWWGW13TF0P06 | Long             | EC               | RF                | US        |    273409 | NS      | $4106608.89   | 1.79%             |  |  |  | No            |                  1 | On Loan: No      |
| Calvert Emerging Markets Equity Fund               | Calvert Emerging Markets Equity Fund                                | CUSIP: 131649766<br>LEI: 549300L4S5NY62FOKA38 | Long             | EC               | RF                | US        |     80646 | NS      | $1770989.59   | 0.77%             |  |  |  | No            |                  1 | On Loan: No      |
| Calvert Flexible Bond Fund                         | Calvert Flexible Bond Fund                                          | CUSIP: 13161X840<br>LEI: 549300HDLJYKTU171023 | Long             | EC               | RF                | US        |    938981 | NS      | $14047160.46  | 6.12%             |  |  |  | No            |                  1 | On Loan: No      |
| Calvert US Large Cap Value Responsible Index Fund  | Calvert US Large Cap Value Responsible Index Fund                   | CUSIP: 131618464<br>LEI: 5493005WGBW1GHF4CG37 | Long             | EC               | RF                | US        |    257770 | NS      | $9277145.47   | 4.04%             |  |  |  | No            |                  1 | On Loan: No      |
| Calvert Floating-Rate Advantage Fund               | Calvert Floating-Rate Advantage Fund                                | CUSIP: 13161X865<br>LEI: 549300GG1YFY0YH1UJ86 | Long             | EC               | RF                | US        |    860391 | NS      | $7519815.41   | 3.28%             |  |  |  | No            |                  1 | On Loan: No      |
| Morgan Stanley & Co. LLC                           | Morgan Stanley Institutional Liquidity Funds - Government Portfolio | CUSIP: 61747C707<br>LEI: 549300BI6Y5SI6BYPB26 | Long             | STIV             | RF                | US        |    289917 | NS      | $289916.65    | 0.13%             |  |  |  | No            |                  1 | On Loan: No      |
| Calvert Small Cap Fund                             | Calvert Small Cap Fund                                              | CUSIP: 13161P672<br>LEI: 549300MIJR64EECJ6M85 | Long             | EC               | RF                | US        |     96907 | NS      | $3455708.79   | 1.51%             |  |  |  | No            |                  1 | On Loan: No      |
| Calvert Equity Fund                                | Calvert Equity Fund                                                 | CUSIP: 131582280<br>LEI: 5493008KHIQHXPKPLB89 | Long             | EC               | RF                | US        |     71335 | NS      | $7017954.61   | 3.06%             |  |  |  | No            |                  1 | On Loan: No      |
| Calvert International Responsible Index Fund       | Calvert International Responsible Index Fund                        | CUSIP: 13161Y848<br>LEI: 5493002R7L7YSTUULM88 | Long             | EC               | RF                | US        |    188875 | NS      | $6990250.02   | 3.05%             |  |  |  | No            |                  1 | On Loan: No      |
| Calvert International Equity Fund                  | Calvert International Equity Fund                                   | CUSIP: 131649741<br>LEI: 549300DYXGATLWKZ1990 | Long             | EC               | RF                | US        |    214643 | NS      | $5806086.74   | 2.53%             |  |  |  | No            |                  1 | On Loan: No      |
| Calvert Ultra-Short Duration Income Fund           | Calvert Ultra-Short Duration Income Fund                            | CUSIP: 131582314<br>LEI: 549300IXKXR5NQT6M528 | Long             | EC               | RF                | US        |    117599 | NS      | $1165407.09   | 0.51%             |  |  |  | No            |                  1 | On Loan: No      |
| Calvert Short-Duration Income Fund                 | Calvert Short-Duration Income Fund                                  | CUSIP: 131582264<br>LEI: 549300KRHGOWQEB8SR45 | Long             | EC               | RF                | US        |    215163 | NS      | $3433994.63   | 1.50%             |  |  |  | No            |                  1 | On Loan: No      |

### Signature

**Date Signed:** 2025-10-17

**Name of Applicant:** Calvert Social Investment Fund

**Signature:** James Kirchner

**Name of Signer:** James Kirchner

**Title:** Treasurer