# Portfolio overlap — MFAEX vs AIBAX Comparing **American Funds Mortgage Fund** (2026-02-28) and **Intermediate Bond Fund of America** (2026-02-28). - Shared positions: 634 - American Funds Mortgage Fund covered by Intermediate Bond Fund of America: 0.2110720519560373816660702220 - Intermediate Bond Fund of America covered by American Funds Mortgage Fund: 0.2110720519560373816660702221 ## American Funds Mortgage Fund — top positions | Security | Weight | Shared | |----------|--------|--------| | CAPITAL GROUP CENTRAL CASH FUND | 0.036451 | ✓ | | FHLBanks Office of Finance | 0.032045 | | | FNCL 6 3/24 | 0.027502 | ✓ | | FR RQ0028 | 0.026589 | ✓ | | Federal Home Loan Bank Discount Notes | 0.024785 | | | FHLBDN 0 05/04/22 | 0.024773 | | | FHLBanks Office of Finance | 0.021288 | | | Federal Home Loan Bank Discount Notes | 0.017707 | | | Federal Home Loan Bank Discount Notes | 0.017663 | | | Federal Home Loan Bank (FHLB) | 0.012198 | | | FED HM LN BK BD 6/18/2026 | 0.011274 | | | FED HOME LN DISCOUNT NT DISCOUNT NOT 03/26 0.00000 | 0.010672 | | | FN MA5701 | 0.010578 | ✓ | | FR SD8290 | 0.010168 | ✓ | | US TREASURY N/B | 0.010010 | ✓ | | FHLB | 0.008864 | | | FHLBanks Office of Finance | 0.008862 | | | US TREASURY N/B | 0.008775 | ✓ | | FNCL 2 4/26 | 0.008719 | ✓ | | US TREASURY N/B | 0.008550 | ✓ | | FR SD8534 | 0.008438 | ✓ | | FR SD8342 | 0.008391 | ✓ | | FN 190445 | 0.008056 | ✓ | | US TREASURY N/B | 0.007844 | | | Uniform Mortgage-Backed Security, TBA | 0.007568 | ✓ | | FR SD8496 | 0.007417 | ✓ | | FNMA 30YR 2.5% 07/01/2052#FA2839 | 0.007037 | ✓ | | FNMDI4 3.5 BF0765 09-01-63 | 0.007031 | | | FR RQ0015 | 0.006732 | ✓ | | FR RB5113 | 0.006728 | | | FR SL2621 | 0.006596 | ✓ | | FR SD8507 | 0.006374 | ✓ | | FNMA 30YR 2.5% 07/01/2052#FS7879 | 0.006359 | ✓ | | FNMA 30YR 6% 02/01/2055#MA5615 | 0.005784 | ✓ | | US TREASURY N/B | 0.005619 | ✓ | | FR SD8213 | 0.005502 | ✓ | | FN MA5674 | 0.005321 | ✓ | | FHLB | 0.005307 | | | FED HM LN BK BD 5/15/2026 | 0.005303 | | | FN MA5735 | 0.005237 | ✓ | | FNCL UMBS 6.5 FA2842 07-01-55 | 0.005193 | ✓ | | G2 MA7051 | 0.005134 | ✓ | | Federal Farm Credit, 03 | 0.004985 | | | FNCL UMBS 6.0 QX4065 01-01-55 | 0.004960 | ✓ | | UMBS, 30 Year | 0.004817 | ✓ | | FED HOME LN DISCOUNT NT DISCOUNT NOT 03/26 0.00000 | 0.004768 | | | US TREASURY N/B | 0.004571 | ✓ | | Federal Home Loan Bank Discount Notes | 0.004523 | | | GOVERNMENT NATIONAL MORTGAGE CORPORATION | 0.004435 | | | Fannie Mae or Freddie Mac | 0.004320 | ✓ | ## Intermediate Bond Fund of America — top positions | Security | Weight | Shared | |----------|--------|--------| | CAPITAL GROUP CENTRAL CASH FUND | 0.081271 | ✓ | | US TREASURY N/B | 0.039207 | | | US TREASURY N/B | 0.036111 | | | US TREASURY N/B | 0.034394 | | | US TREASURY N/B | 0.026693 | ✓ | | US TREASURY N/B | 0.009427 | ✓ | | US TREASURY N/B | 0.008412 | | | FNCL 2 4/26 | 0.008253 | ✓ | | US TREASURY N/B | 0.007788 | ✓ | | US TREASURY N/B | 0.007159 | | | US TREASURY N/B | 0.006974 | | | US TREASURY N/B | 0.006874 | ✓ | | U.S. Treasury Inflation-Protected Indexed Bonds | 0.006835 | | | US TREASURY N/B | 0.006761 | ✓ | | US TREASURY N/B | 0.006510 | ✓ | | US TREASURY N/B | 0.005446 | | | Uniform Mortgage-Backed Security, TBA | 0.005407 | ✓ | | Fannie Mae or Freddie Mac | 0.004908 | ✓ | | US TREASURY N/B | 0.004680 | | | USRE 2021-1 A1 | 0.004589 | ✓ | | US TREASURY N/B | 0.004576 | | | UMBS, 30 Year | 0.004502 | | | US TREASURY N/B | 0.004422 | ✓ | | US TREASURY N/B | 0.003629 | | | US TREASURY N/B | 0.003544 | | | US TREASURY N/B | 0.003063 | ✓ | | FNCL 6 3/24 | 0.003026 | ✓ | | FR SD8324 | 0.002766 | ✓ | | US TREASURY N/B | 0.002696 | ✓ | | US TREASURY N/B | 0.002651 | ✓ | | US TREASURY N/B | 0.002594 | | | US TREASURY N/B | 0.002583 | | | FN 190445 | 0.002349 | ✓ | | Citigroup Commercial Mortgage Trust, Series 2023-SMRT, Class A | 0.002340 | ✓ | | US TREASURY N/B | 0.002268 | | | UMBS | 0.002226 | ✓ | | US TREASURY N/B | 0.002219 | | | US TREASURY N/B | 0.002103 | | | US TREASURY N/B | 0.002094 | | | US TREASURY N/B | 0.002049 | | | FNMA UMBS, 30 Year | 0.001975 | ✓ | | FNCL UMBS 6.5 FA2842 07-01-55 | 0.001924 | ✓ | | FR SD8331 | 0.001901 | ✓ | | Uniform Mortgage-Backed Security, TBA | 0.001874 | ✓ | | US TREASURY N/B | 0.001856 | | | U.S. TREASURY INFLATION-PROTECTED SECURITIES 1.250 04/15/2028 | 0.001837 | | | FR RA5971 | 0.001827 | | | FORDF 2025-2 A1 | 0.001773 | | | BX 2025-ARIA A | 0.001771 | | | SMRT 2022-MINI | 0.001764 | ✓ | ## Sources - N-PORT (fund A) — accession `0001193125-26-182050` (as of 2026-02-28) - N-PORT (fund B) — accession `0001193125-26-182057` (as of 2026-02-28) --- _Informational only — not investment advice. FundWatcher presents publicly available data and makes no recommendation to buy or sell any security. Verify all figures against the source filing before relying on them._ _Data sourced from U.S. SEC EDGAR filings (Forms N-PORT, N-CEN, and prospectus Risk/Return summaries). FundWatcher is not affiliated with the SEC._ _Use of this data is subject to the FundWatcher Terms of Service. Information may be used only for personal, non-commercial research and may not be redistributed. See _