IYW vs XLK overlap - what they share and where they differ
IYW and XLK share 72.4% of their weight across 58 common positions, read from what each fund reported to the SEC.
Each week Ploutos reads the reported positions of the largest US equity ETFs and measures, pair by pair, the weight they share: for every stock both funds hold, the smaller of the two weights counts. Two funds tracking the same index land near 100%. A sector fund inside a broad index fund lands at roughly that sector's weight.
IYW and XLK
72.4%
58 shared positions
IYW
iShares U.S. Technology ETF
Reported positions cover 100% of the fund, 135 positions · Apr 30, 2026
Top 10: 65.6%·Holdings of IYW
XLK
State Street(R) Technology Select Sector SPDR(R) ETF
Reported positions cover 100% of the fund, 74 positions · Jun 30, 2026
Top 10: 64.5%·Holdings of XLK
Reported positions cover IYW 100%, XLK 100% of each fund. An overlap cannot exceed the smaller coverage, so a low figure can mean little overlap or thin reporting.
XLK vs IYW side by side
IYWiShares U.S. Technology ETF
135
stock positions reported to the SEC
23.0% of its weight is in 77 names XLK does not hold
XLKState Street(R) Technology Select Sector SPDR(R) ETF
74
stock positions reported to the SEC
8.3% of its weight is in 16 names IYW does not hold
Where each fund's weight sits
Largest sectors for both funds
No sector differs by more than a point between the two.
The figures side by side
| IYW | XLK | |
|---|---|---|
| Filing date | Apr 30, 2026 | Jun 30, 2026 |
| Stock positions reported | 135 | 74 |
| Weight of the ten largest | 65.6% | 64.5% |
| Largest position | NVDA 16.2% | NVDA 14.7% |
| Held alone | 77 positions, 23.0% | 16 positions, 8.3% |
| Covered by stock positions | 100% | 100% |
Holdings they share
| Stock | In IYW | In XLK | Counted |
|---|---|---|---|
| NVDANVIDIA CORPORATION | 16.23% | 14.65% | 14.65% |
| AAPLAPPLE INC. | 13.63% | 12.85% | 12.85% |
| MSFTMICROSOFT CORPORATION | 3.99% | 8.38% | 3.99% |
| AVGOBROADCOM INC. | 3.78% | 5.41% | 3.78% |
| AMDADVANCED MICRO DEVICES, INC. | 3.50% | 5.28% | 3.50% |
| MUMICRON TECHNOLOGY, INC. | 2.98% | 5.42% | 2.98% |
| INTCINTEL CORPORATION | 2.56% | 3.68% | 2.56% |
| LRCXLAM RESEARCH CORPORATION | 1.98% | 3.02% | 1.98% |
| AMATAPPLIED MATERIALS, INC. | 1.92% | 3.20% | 1.92% |
| TXNTEXAS INSTRUMENTS INCORPORATED | 1.57% | 1.51% | 1.51% |
What each holds alone
The heaviest positions one fund reports and the other does not.
Only in IYW
Only in XLK
Questions people ask
Is IYW the same as XLK?
72.4% of their weight sits in the same 58 holdings. IYW also reports GOOGL, META, VRT, which the other does not. XLK also reports CSCO, STX, ANET, which the other does not.
How is the overlap between IYW and XLK measured?
For every stock both funds report, the smaller of the two weights counts, and the sum is the overlap. The reported positions cover 100% of IYW and 100% of XLK, so the number cannot exceed the smaller coverage.
Which holds more, XLK or IYW?
IYW reports 135 stock positions and XLK reports 74. 23.0% of IYW's weight sits in names XLK does not hold, and 8.3% of XLK's weight in names IYW does not hold. The ten largest positions are 65.6% of IYW and 64.5% of XLK.
How do IYW and XLK differ by sector?
No sector differs by more than a point between the two. Sectors come from each holding's SIC code in its SEC record, summed by the weight the fund reports.
Where do the numbers come from?
From each fund's own N-PORT filing to the SEC, which lists every position and its weight. The comparison uses every equity position the fund reports; cash, futures and bonds are not counted, which is why a coverage figure sits next to every result. Holdings change between filings.
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Descriptive data from public SEC filings. Nothing on this page is a recommendation to buy, sell or hold any fund or stock, and holdings change between filings.