Company: TSI
Filing Date: 2025-09-04
Form Type: N-CSRS
Source: 0001193125-25-195336
Chunk: 1

Company: TCW STRATEGIC INCOME FUND INC
Filing Date: 2025-09-04
Form: N-CSRS
Chunk 1
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. As yield is a function of a number of parameters, the go-forwardyield of TSI will likely differ from the trailing figure. Fund Performance (%)

|                                                              |     |         |      |     | Total Return as of June 30, 2025 (Annualized for periods over 1 Year) |       |     |        |      |     |        |      |     |         |      |     |                |      |     |                |      |
|:-------------------------------------------------------------|:----|:--------|-----:|:----|:----------------------------------------------------------------------|------:|:----|:-------|-----:|:----|:-------|-----:|:----|:--------|-----:|:----|:---------------|-----:|:----|:---------------|-----:|
|                                                              |     | 6 Month |      |     | 1 Year                                                                |       |     | 3 Year |      |     | 5 Year |      |     | 10 Year |      |     | Since3/1/06(2) |      |     | Since3/5/87(3) |      |
| Price-Based Return                                           |     |         | 4.18 |     |                                                                       | 11.52 |     |        | 8.22 |     |        | 4.45 |     |         | 5.87 |     |                | 8.44 |     |                | 7.63 |
| NAV-BasedReturn                                              |     |         | 5.00 |     |                                                                       |  9.65 |     |        | 7.27 |     |        | 4.63 |     |         | 4.63 |     |                | 7.58 |     |                | 7.84 |
| Bloomberg3-MonthU.S. Treasury Bellwethers Index + 400 bps(1) |     |         | 4.12 |     |                                                                       |  8.90 |     |        | 8.81 |     |        | 6.92 |     |         | 6.08 |     |                | 5.73 |     |                |  n/a |

| (1) | Benchmark changed to the Bloomberg3-MonthU.S. Treasury Bellwethers Index + 400 bps effective 3/1/2022. |

| (2) | The date on which the Fund’s investment objective