Tax-Loss Harvest Finder
Sell the loss, keep the exposure. For any fund, ranked stand-ins that track the same market — scored on a year of price correlation, holdings overlap, and fee — with a flag when two funds follow the same index and a swap could look substantially identical.
Correlation computed on ~250 shared sessions per pair · not tax advice — the flag is a heuristic, your compliance desk has the final word
| Substitute | Correlation | Book overlap | Fee vs BBSB | Assets | Wash-sale read | |
|---|---|---|---|---|---|---|
| VGSH Vanguard Short-Term Treasury ETF | 0.941 | — | -3bp | $20B | different index | Compare |
| BSV Vanguard Short-Term Bond ETF | 0.935 | — | -3bp | $33.4B | different index | Compare |
| IGSB iShares 1-5 Year Investment Grade Corporate Bond ETF | 0.910 | — | -3bp | $23.4B | different index | Compare |
| SPSB State Street SPDR Portfolio Short Term Corporate Bond ETF | 0.890 | — | -3bp | $11.1B | different index | Compare |
| VGIT Vanguard Intermediate-Term Treasury ETF | 0.874 | — | -3bp | $29.9B | different index | Compare |
| SPTI State Street SPDR Portfolio Intermediate Term Treasury ETF | 0.870 | — | -4bp | $10.5B | different index | Compare |
RANKED BY CORRELATION, FEE, AND OVERLAP · “SAME INDEX” PAIRS ARE FLAGGED BECAUSE THE IRS HAS NEVER DEFINED “SUBSTANTIALLY IDENTICAL” — MOST DESKS TREAT SAME-INDEX SWAPS AS OFF-LIMITS AND DIFFERENT-INDEX SWAPS AS DEFENSIBLE
Cached coverage for 2,093 funds. Latest price/flow record dates: 2024-08-23 to 2026-10-22 (1,065 funds with dated records). Fund details retrieved: 2026-09-25 to 2026-10-23. Data dates vary by fund; these are not live quotes. Flow totals include available records only; missing coverage is not evidence of zero flow.