Data as of Sep 13, 2026. Both funds on the fields they both publish, from the same sources.
SPY vs SPYM: how they differ
SPY and SPYM hold 100% of their weight in the same names.
SPDR S&P 500 ETF Trust and State Street(R) SPDR(R) Portfolio S&P 500(R) ETF.
What they hold in common
By the books each fund has filed, SPY and SPYM hold 100% of their money in the same securities at the same weight.
| Holding | SPY | SPYM |
|---|---|---|
| NVIDIA CORP | 8.08% | 8.07% |
| APPLE INC | 7.33% | 7.32% |
| MICROSOFT CORP | 5.59% | 5.58% |
| AMAZON.COM INC | 3.77% | 3.76% |
| ALPHABET INC CL A | 2.98% | 2.98% |
| BROADCOM INC | 2.61% | 2.61% |
| ALPHABET INC CL C | 2.39% | 2.38% |
| META PLATFORMS INC CLASS A | 2.16% | 2.16% |
| MICRON TECHNOLOGY INC | 1.69% | 1.68% |
| TESLA INC | 1.56% | 1.56% |
| JPMORGAN CHASE + CO | 1.45% | 1.45% |
| BERKSHIRE HATHAWAY INC CL B | 1.42% | 1.42% |
| Only in SPY | Only in SPYM |
|---|---|
| SSI US GOV MONEY MARKET CLASS 0.07% | |
| CONTRA WALGREENS BOOTS 0.00% |
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 10, 2026.
| SPY SPDR S&P 500 ETF Trust | SPYM State Street(R) SPDR(R) Portfolio S&P 500(R) ETF | |
|---|---|---|
| Where it sits | Core index fund | Core index fund |
| Issuer | State Street | State Street |
| What it is | S&P 500 | S&P 500 |
| Total return, 1 year | +17.5% | +17.6% |
| S&P 500 over the same days | +17.5% | +17.5% |
| Gap to the S&P 500 | 0.0 pts | +0.1 pts |
| Expense ratio | 0.09% | 1.30% |
| Already in the S&P 500 | 100.0% | 100.0% |
| Holdings | 505 | 507 |
SPY in plain words
SPY is an index equity fund tracking the S&P 500. Over the year to Sep 11, 2026 it returned +17.5% with distributions reinvested, against +17.5% for the S&P 500 and +23.0% for the Nasdaq-100. The prospectus expense ratio is 0.09% a year. By its holdings filed for Sep 10, 2026, 100% of the fund by weight is stocks the S&P 500 also holds, across 505 positions, with the top ten at 38.2%.
SPYM in plain words
SPYM is an index equity fund tracking the S&P 500. Over the year to Sep 11, 2026 it returned +17.6% with distributions reinvested, against +17.5% for the S&P 500 and +23.0% for the Nasdaq-100. The prospectus expense ratio is 1.30% a year. By its holdings filed for Sep 10, 2026, 100% of the fund by weight is stocks the S&P 500 also holds, across 507 positions, with the top ten at 38.1%.
Questions people ask
- Which returned more over the last year, SPY or SPYM?
- In the year to Sep 13, 2026, with distributions reinvested, SPY returned +17.5% and SPYM returned +17.6%, so SPYM returned more. One year is one year; the longer windows are in the table.
- Which is cheaper, SPY or SPYM?
- SPY charges 0.09% a year and SPYM charges 1.30%, so SPY is cheaper. Fees come from each fund's prospectus.
- How much do SPY and SPYM overlap with the S&P 500?
- By their latest filed holdings, 100% of SPY and 100% of SPYM by weight is stocks the S&P 500 already holds. Between the two funds, 100% of their books are the same securities at the same weight.
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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, SPY against SPYM, data as of Sep 13, 2026. https://etfiq.com/compare/any/spy-vs-spym Free to use with attribution; the underlying files are at Open data.
A comparison is not a recommendation. Standards and sources