Data as of Sep 12, 2026. Both funds on the fields they both publish, from the same sources.
IYW vs SPY: how they differ
IYW and SPY hold 43% of their weight in the same names, and IYW returned more over the year.
iShares U.S. Technology ETF and SPDR S&P 500 ETF Trust.
What they hold in common
By the books each fund has filed, IYW and SPY hold 43% of their money in the same securities at the same weight.
| Holding | IYW | SPY |
|---|---|---|
| NVIDIA CORPORATION | 16.25% | 7.52% |
| APPLE INC. | 13.65% | 6.59% |
| MICROSOFT CORPORATION | 3.99% | 4.30% |
| ALPHABET INC. | 7.84% | 3.25% |
| BROADCOM INC. | 3.78% | 2.77% |
| ALPHABET INC. | 6.34% | 2.59% |
| MICRON TECHNOLOGY, INC. | 2.98% | 2.02% |
| META PLATFORMS, INC. | 2.81% | 1.92% |
| ADVANCED MICRO DEVICES, INC. | 3.50% | 1.47% |
| INTEL CORPORATION | 2.56% | 1.02% |
| APPLIED MATERIALS, INC. | 1.92% | 0.89% |
| LAM RESEARCH CORPORATION | 1.99% | 0.84% |
| Only in IYW | Only in SPY |
|---|---|
| CLOUDFLARE, INC. 0.39% | Amazon.com, Inc. 3.62% |
| STRATEGY INC 0.32% | Tesla, Inc. 1.84% |
| SNOWFLAKE INC. 0.28% | Eli Lilly & Co. 1.47% |
| FLEX LTD. 0.21% | Berkshire Hathaway, Inc. 1.42% |
| ZOOM COMMUNICATIONS, INC. 0.16% | JPMorgan Chase & Co. 1.36% |
| Astera Labs, Inc 0.15% | Johnson & Johnson 0.95% |
| Everpure, Inc 0.14% | Visa, Inc. 0.88% |
| ENTEGRIS, INC. 0.13% | Exxon Mobil Corp. 0.88% |
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 Apr 30, 2026 and Jun 30, 2026.
| IYW iShares U.S. Technology ETF | SPY SPDR S&P 500 ETF Trust | |
|---|---|---|
| Where it sits | Core index fund | Core index fund |
| Issuer | iShares | State Street |
| What it is | U.S. Technology | S&P 500, book from IVV |
| Total return, 1 year | +34.9% | +17.5% |
| S&P 500 over the same days | +17.5% | +17.5% |
| Gap to the S&P 500 | +17.4 pts | 0.0 pts |
| Expense ratio | 0.37% | 0.09% |
| Already in the S&P 500 | 95.5% | 100.0% |
| Holdings | 139 | 504 |
IYW in plain words
IYW is an index equity fund tracking the U.S. Technology. Over the year to Sep 11, 2026 it returned +34.9% with distributions reinvested, against +17.5% for the S&P 500 and +23.0% for the Nasdaq-100. The prospectus expense ratio is 0.37% a year. By its holdings filed for Apr 30, 2026, 96% of the fund by weight is stocks the S&P 500 also holds, across 139 positions, with the top ten at 63.7%.
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 Jun 30, 2026, 100% of the fund by weight is stocks the S&P 500 also holds, across 504 positions, with the top ten at 36.4%.
Questions people ask
- Which returned more over the last year, IYW or SPY?
- In the year to Sep 12, 2026, with distributions reinvested, IYW returned +34.9% and SPY returned +17.5%, so IYW returned more. One year is one year; the longer windows are in the table.
- Which is cheaper, IYW or SPY?
- IYW charges 0.37% a year and SPY charges 0.09%, so SPY is cheaper. Fees come from each fund's prospectus.
- How much do IYW and SPY overlap with the S&P 500?
- By their latest filed holdings, 96% of IYW and 100% of SPY by weight is stocks the S&P 500 already holds. Between the two funds, 43% of their books are the same securities at the same weight.
Other comparisons
Where to next
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, IYW against SPY, data as of Sep 12, 2026. https://etfiq.com/compare/any/IYW-SPY Free to use with attribution; the underlying files are at Open data.
A comparison is not a recommendation. Standards and sources