Company: TSI
Filing Date: 2025-03-05
Form Type: N-CSR
Source: 0001193125-25-046168
Chunk: 21

Company: TCW STRATEGIC INCOME FUND INC
Filing Date: 2025-03-05
Form: N-CSR
Chunk 21
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 are generally made monthly, in effect “passing through” monthly payments made by borrowers on the residential or commercial mortgage loans which underlie the securities (net of any fees paid to the issuer or guarantor of the securities). Mortgage pass-through securities differ from other forms of debt securities, which normally provide for periodic payment of interest in fixed amounts with principal payments at maturity or specified call dates. The Fund may also invest in Collateralized Mortgage Obligations (“CMOs”). CMOs are debt obligations collateralized by residential or commercial mortgage loans or residential or commercial mortgage pass-through securities. Interest and principal are generally paid monthly. CMOs may be collateralized by whole mortgage loans or private mortgage pass-through securities but are more typically collateralized by portfolios of mortgage pass-through securities guaranteed by the Government National Mortgage Association (Ginnie Mae), Federal Home Loan Mortgage Corporation (Freddie Mac) or Federal National Mortgage Corporation (Fannie Mae). The issuer of a series of CMOs may elect to be treated for tax purposes as a Real Estate Mortgage Investment Conduit. CMOs are structured into multiple classes, each bearing a different stated maturity. Monthly payment of principal received from the pool of underlying mortgages, including prepayments, is first returned to investors holding the shortest maturity class. Investors holding the longer maturity classes usually receive principal only after shorter classes have been retired. An investor may be partially protected against a sooner than desired return of principal because of the sequential payments. The Fund may invest in stripped MBS. Stripped MBS are usually structured with two classes that receive different proportions of the interest and principal distributions on a pool of mortgage assets. In certain cases, one class will receive all of the interest (the interest only or “IO” class), while the other class will receive all of the principal (the principal only or “PO” class). The yield to maturity on IOs is sensitive to the rate of principal repayments (including prepayments) on the related underlying mortgage assets, and principal payments may have a material effect on yield to maturity. If the underlying mortgage assets experience greater than anticipated prepayments of principal, the Fund may not fully recoup its initial investment in IOs. MBS and other ABS held by the Fund at December 31, 2024 are listed in the Fund’s Schedule of Investments. 40 TCW Strategic Income Fund, Inc. December 31, 2024 Note 3 — Portfolio Investments (Continued) When-Issued, Delayed-Delivery, To Be Announced (“TBA