# Portfolio overlap — RBFEX vs SSAFX Comparing **Bond Fund of America** (2026-03-31) and **State Street Aggregate Bond Index Portfolio** (2026-03-31). - Shared positions: 1259 - Bond Fund of America covered by State Street Aggregate Bond Index Portfolio: 0.2387578347489950373912725444 - State Street Aggregate Bond Index Portfolio covered by Bond Fund of America: 0.2387578347489950373912725446 ## Bond Fund of America — top positions | Security | Weight | Shared | |----------|--------|--------| | CAPITAL GROUP CENTRAL CASH FUND | 0.038352 | | | US TREASURY N/B | 0.013990 | ✓ | | US TREASURY N/B | 0.013490 | ✓ | | US TREASURY N/B | 0.012390 | ✓ | | US TREASURY N/B | 0.012069 | | | US TREASURY N/B | 0.010204 | ✓ | | US TREASURY N/B | 0.008753 | ✓ | | Uniform Mortgage-Backed Security, TBA | 0.008732 | | | US TREASURY N/B | 0.008088 | ✓ | | US TREASURY N/B | 0.007513 | ✓ | | US TREASURY N/B | 0.007294 | ✓ | | FNCL 2 5/26 | 0.006139 | | | US TREASURY N/B | 0.006124 | | | US TREASURY N/B | 0.005948 | ✓ | | Eagle Funding LuxCo S.a.r.l. | 0.005649 | | | US TREASURY N/B | 0.005532 | ✓ | | US TREASURY N/B | 0.005224 | ✓ | | US TREASURY N/B | 0.004910 | ✓ | | US TREASURY N/B | 0.004853 | ✓ | | U.S. Treasury Inflation-Protected Indexed Bonds | 0.004645 | | | US TREASURY N/B | 0.004637 | ✓ | | US TREASURY N/B | 0.004614 | ✓ | | FNCL 6 4/26 | 0.004569 | ✓ | | US TREASURY N/B | 0.004231 | ✓ | | US TREASURY N/B | 0.004187 | ✓ | | US TREASURY N/B | 0.004149 | ✓ | | US TREASURY N/B | 0.004137 | | | US TREASURY N/B | 0.004017 | ✓ | | US TREASURY N/B | 0.003996 | ✓ | | U.S. Treasury Notes | 0.003699 | | | FNCL 2.5 4/26 | 0.003585 | ✓ | | US TREASURY N/B | 0.003434 | ✓ | | US TREASURY N/B | 0.003408 | ✓ | | US TREASURY N/B | 0.003407 | ✓ | | US TREASURY N/B | 0.003051 | ✓ | | US TREASURY N/B | 0.003033 | ✓ | | USRE 2021-1 A1 | 0.002968 | | | FR SD8213 | 0.002953 | ✓ | | US TREASURY N/B | 0.002939 | | | US TREASURY N/B | 0.002895 | ✓ | | US TREASURY N/B | 0.002847 | ✓ | | US TREASURY N/B | 0.002801 | ✓ | | US TREASURY N/B | 0.002751 | ✓ | | US TREASURY N/B | 0.002730 | ✓ | | FNCL 5.5 4/26 | 0.002664 | ✓ | | US TREASURY N/B | 0.002642 | | | US TREASURY N/B | 0.002617 | ✓ | | IL ST TXB-PENSION | 0.002592 | ✓ | | US TREASURY N/B | 0.002537 | ✓ | | US TREASURY N/B | 0.002457 | ✓ | ## State Street Aggregate Bond Index Portfolio — top positions | Security | Weight | Shared | |----------|--------|--------| | State Street Navigator Securities Lending Portfolio II | 0.056865 | | | US TREASURY N/B | 0.004320 | ✓ | | US TREASURY N/B | 0.004099 | ✓ | | US TREASURY N/B | 0.004060 | ✓ | | US TREASURY N/B | 0.004028 | ✓ | | US TREASURY N/B | 0.003894 | ✓ | | US TREASURY N/B | 0.003806 | ✓ | | US TREASURY N/B | 0.003722 | ✓ | | US TREASURY N/B | 0.003719 | ✓ | | US TREASURY N/B | 0.003494 | ✓ | | US TREASURY N/B | 0.003479 | ✓ | | US TREASURY N/B | 0.003461 | | | US TREASURY N/B | 0.003421 | ✓ | | US TREASURY N/B | 0.003400 | ✓ | | US TREASURY N/B | 0.003366 | ✓ | | US TREASURY N/B | 0.003215 | | | US TREASURY N/B | 0.003156 | ✓ | | US TREASURY N/B | 0.003140 | ✓ | | US TREASURY N/B | 0.003123 | | | US TREASURY N/B | 0.003113 | ✓ | | US TREASURY N/B | 0.003109 | ✓ | | FR RQ0041 | 0.003104 | ✓ | | US TREASURY N/B | 0.003058 | ✓ | | US TREASURY N/B | 0.003039 | ✓ | | US TREASURY N/B | 0.003020 | ✓ | | US TREASURY N/B | 0.003007 | | | US TREASURY N/B | 0.002936 | ✓ | | US TREASURY N/B | 0.002933 | ✓ | | US TREASURY N/B | 0.002926 | | | US TREASURY N/B | 0.002836 | ✓ | | US TREASURY N/B | 0.002810 | ✓ | | US TREASURY N/B | 0.002805 | ✓ | | US TREASURY N/B | 0.002797 | ✓ | | US TREASURY N/B | 0.002786 | ✓ | | US TREASURY N/B | 0.002768 | ✓ | | US TREASURY N/B | 0.002751 | ✓ | | US TREASURY N/B | 0.002678 | ✓ | | US TREASURY N/B | 0.002648 | ✓ | | US TREASURY N/B | 0.002646 | ✓ | | US TREASURY N/B | 0.002618 | ✓ | | US TREASURY N/B | 0.002591 | ✓ | | FN MA4465 | 0.002574 | ✓ | | US TREASURY N/B | 0.002574 | ✓ | | US TREASURY N/B | 0.002531 | ✓ | | FR SD8475 | 0.002526 | ✓ | | US TREASURY N/B | 0.002526 | ✓ | | US TREASURY N/B | 0.002512 | | | US TREASURY N/B | 0.002503 | ✓ | | US TREASURY N/B | 0.002496 | ✓ | | US TREASURY N/B | 0.002453 | ✓ | ## Sources - N-PORT (fund A) — accession `0001193125-26-245289` (as of 2026-03-31) - N-PORT (fund B) — accession `0001410368-26-055492` (as of 2026-03-31) --- _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 _