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 GBF | Assets | Wash-sale read | |
|---|---|---|---|---|---|---|
| IEF iShares 7-10 Year Treasury Bond ETF | 0.973 | — | -5bp | $41.4B | different index | Compare |
| SPAB State Street SPDR Portfolio Aggregate Bond ETF | 0.968 | — | -17bp | $9.9B | different index | Compare |
| TLH iShares 10-20 Year Treasury Bond ETF | 0.960 | — | -5bp | $10.7B | different index | Compare |
| IBTM iShares iBonds Dec 2032 Term Treasury ETF | 0.949 | — | -13bp | $552M | different index | Compare |
| IBDY iShares Trust iShares iBonds De | 0.946 | — | -10bp | $1.2B | different index | Compare |
| SCHR Schwab Intermediate-Term U.S. Treasury ETF | 0.943 | — | -17bp | $9.8B | 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 2,131 funds. Latest price/flow record dates: 2024-08-23 to 2026-10-05 (1,102 funds with dated records). Fund details retrieved: 2026-09-02 to 2026-10-07. Data dates vary by fund; these are not live quotes. Flow totals include available records only; missing coverage is not evidence of zero flow.