Data as of Sep 19, 2026.
IBIT vs SPY: how they differ
IBIT and SPY hold 0% of their weight in the same names, and SPY returned more over the year.
iShares Bitcoin Trust ETF and SPDR S&P 500 ETF Trust.
What they hold in common
By the books each fund has filed, IBIT and SPY hold 0% of their money in the same securities at the same weight.
| Only in IBIT | Only in SPY |
|---|---|
| BITCOIN 100.00% | NVIDIA CORP 8.14% |
| USD CASH 0.00% | APPLE INC 7.43% |
| MICROSOFT CORP 5.55% | |
| AMAZON.COM INC 3.77% | |
| ALPHABET INC CL A 3.10% | |
| BROADCOM INC 2.57% | |
| ALPHABET INC CL C 2.48% | |
| META PLATFORMS INC CLASS A 2.22% |
Weight overlap is an ETFIQ calculation: for every security both funds hold, the smaller of the two weights, summed. Above 50%, holding both is close to holding one of them twice. Holdings dated Sep 18, 2026.
| IBIT iShares Bitcoin Trust ETF | SPY SPDR S&P 500 ETF Trust | |
|---|---|---|
| Where it sits | Core fund | Core fund |
| Issuer | iShares | State Street |
| What it is | Holds bitcoin | Tracks the S&P 500 |
| Total return, 1 year | −31.1% | +16.6% |
| S&P 500 over the same days | +16.6% | +16.6% |
| Gap to the S&P 500 | −47.6 pts | 0.0 pts |
| Expense ratio | 0.25% | 0.09% |
| Holdings | 2 | 505 |
| Net assets | $63.7bn | $785.0bn |
IBIT in plain words
IBIT holds bitcoin. Over the year to Sep 18, 2026 it returned −31.1% with distributions reinvested, against +16.6% for the S&P 500 and +21.8% for the Nasdaq-100. The prospectus expense ratio is 0.25% a year. It sat 35.5% below its high of Oct 6, 2025 on Sep 18, 2026.
SPY in plain words
SPY tracks the S&P 500. Over the year to Sep 18, 2026 it returned +16.6% with distributions reinvested, against +16.6% for the S&P 500 and +21.8% for the Nasdaq-100. The prospectus expense ratio is 0.09% a year. By its holdings published by its issuer for Sep 18, 2026, 100% of the fund by weight is stocks the S&P 500 also holds, across 505 positions, with the top ten at 38.5%.
Questions people ask
- Which returned more over the last year, IBIT or SPY?
- In the year to Sep 19, 2026, with distributions reinvested, IBIT returned −31.1% and SPY returned +16.6%, so SPY returned more.
- Which is cheaper, IBIT or SPY?
- IBIT charges 0.25% a year and SPY charges 0.09%, so SPY is cheaper. Fees come from each fund's prospectus.
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Where these figures came from
ETFIQ links to the documents behind every figure. It is not affiliated with any issuer, and a link is not an endorsement.
Cite this page. ETFIQ, IBIT against SPY, data as of Sep 19, 2026. https://etfiq.com/compare/any/ibit-vs-spy Free to use with attribution; the underlying files are at Open data.
A comparison is not a recommendation. Standards and sources