IGM vs PSI overlap - what they share and where they differ
IGM and PSI share 26.9% of their weight across 29 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.
IGM and PSI
26.9%
29 shared positions
IGM
iShares Expanded Tech Sector ETF
Reported positions cover 100% of the fund, 293 positions · Jun 30, 2026
Top 10: 58.1%·Holdings of IGM
PSI
Invesco Semiconductors ETF
Reported positions cover 99% of the fund, 30 positions · Jul 31, 2026
Top 10: 49.4%·Holdings of PSI
Reported positions cover IGM 100%, PSI 99% of each fund. An overlap cannot exceed the smaller coverage, so a low figure can mean little overlap or thin reporting.
PSI vs IGM side by side
IGMiShares Expanded Tech Sector ETF
293
stock positions reported to the SEC
70.4% of its weight is in 264 names PSI does not hold
PSIInvesco Semiconductors ETF
30
stock positions reported to the SEC
2.4% of its weight is in 1 names IGM does not hold
Where each fund's weight sits
Largest sectors for both funds
The widest gap is Technology: IGM has 5.7 points more of it.
The figures side by side
| IGM | PSI | |
|---|---|---|
| Filing date | Jun 30, 2026 | Jul 31, 2026 |
| Stock positions reported | 293 | 30 |
| Weight of the ten largest | 58.1% | 49.4% |
| Largest position | GOOGL 8.0% | AMAT 6.6% |
| Held alone | 264 positions, 70.4% | 1 positions, 2.4% |
| Covered by stock positions | 100% | 99% |
Holdings they share
| Stock | In IGM | In PSI | Counted |
|---|---|---|---|
| NVDANVIDIA Corp. | 7.96% | 5.48% | 5.48% |
| MUMicron Technology, Inc. | 5.46% | 5.39% | 5.39% |
| AMDAdvanced Micro Devices, Inc. | 4.13% | 5.54% | 4.13% |
| INTCIntel Corp. | 2.87% | 4.28% | 2.87% |
| AMATApplied Materials, Inc. | 2.50% | 6.55% | 2.50% |
| LRCXLam Research Corp. | 2.36% | 5.33% | 2.36% |
| KLACKLA Corp. | 1.72% | 5.33% | 1.72% |
| ADIAnalog Devices, Inc. | 0.84% | 5.13% | 0.84% |
| TERTeradyne, Inc. | 0.33% | 3.02% | 0.33% |
| MPWRMonolithic Power Systems, Inc. | 0.30% | 2.74% | 0.30% |
What each holds alone
The heaviest positions one fund reports and the other does not.
Only in IGM
Only in PSI
Questions people ask
Is IGM the same as PSI?
26.9% of their weight sits in the same 29 holdings. IGM also reports GOOGL, AAPL, AVGO, which the other does not. PSI also reports TSEM, which the other does not.
How is the overlap between IGM and PSI 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 IGM and 99% of PSI, so the number cannot exceed the smaller coverage.
Which holds more, PSI or IGM?
IGM reports 293 stock positions and PSI reports 30. 70.4% of IGM's weight sits in names PSI does not hold, and 2.4% of PSI's weight in names IGM does not hold. The ten largest positions are 58.1% of IGM and 49.4% of PSI.
How do IGM and PSI differ by sector?
The widest gap is Technology: IGM has 5.7 points more of it. 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.
Add a third fund in the tool·All fund pairs
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.