CHAT vs IGM overlap - what they share and where they differ
CHAT and IGM share 35.9% of their weight across 24 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.
CHAT and IGM
35.9%
24 shared positions
CHAT
Roundhill Generative AI & Technology ETF
Reported positions cover 100% of the fund, 47 positions · Jul 31, 2026
Top 10: 39.3%·Holdings of CHAT
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
Reported positions cover CHAT 100%, IGM 100% of each fund. An overlap cannot exceed the smaller coverage, so a low figure can mean little overlap or thin reporting.
IGM vs CHAT side by side
CHATRoundhill Generative AI & Technology ETF
47
stock positions reported to the SEC
44.1% of its weight is in 23 names IGM does not hold
IGMiShares Expanded Tech Sector ETF
293
stock positions reported to the SEC
45.4% of its weight is in 269 names CHAT does not hold
Where each fund's weight sits
Largest sectors for both funds
The widest gap is Technology: IGM has 29.1 points more of it.
The figures side by side
| CHAT | IGM | |
|---|---|---|
| Filing date | Jul 31, 2026 | Jun 30, 2026 |
| Stock positions reported | 47 | 293 |
| Weight of the ten largest | 39.3% | 58.1% |
| Largest position | NVDA 6.4% | GOOGL 8.0% |
| Held alone | 23 positions, 44.1% | 269 positions, 45.4% |
| Covered by stock positions | 100% | 100% |
Holdings they share
| Stock | In CHAT | In IGM | Counted |
|---|---|---|---|
| NVDANVIDIA Corp | 6.43% | 7.96% | 6.43% |
| GOOGLAlphabet Inc | 5.92% | 7.99% | 5.92% |
| AVGOBroadcom Inc | 4.31% | 7.60% | 4.31% |
| AMDAdvanced Micro Devices Inc | 3.39% | 4.13% | 3.39% |
| MUMicron Technology Inc | 3.22% | 5.46% | 3.22% |
| MSFTMicrosoft Corp | 2.78% | 7.49% | 2.78% |
| METAMeta Platforms Inc | 1.96% | 4.16% | 1.96% |
| MRVLMarvell Technology Inc | 1.51% | 1.14% | 1.14% |
| ORCLOracle Corp | 2.02% | 1.08% | 1.08% |
| INTCIntel Corp | 1.04% | 2.87% | 1.04% |
What each holds alone
The heaviest positions one fund reports and the other does not.
Only in CHAT
Only in IGM
Questions people ask
Is CHAT the same as IGM?
35.9% of their weight sits in the same 24 holdings. CHAT also reports SKHY, SAMSUNG ELECTRONICS CO., LTD., NBIS, which the other does not. IGM also reports AAPL, AMAT, LRCX, which the other does not.
How is the overlap between CHAT and IGM 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 CHAT and 100% of IGM, so the number cannot exceed the smaller coverage.
Which holds more, IGM or CHAT?
CHAT reports 47 stock positions and IGM reports 293. 44.1% of CHAT's weight sits in names IGM does not hold, and 45.4% of IGM's weight in names CHAT does not hold. The ten largest positions are 39.3% of CHAT and 58.1% of IGM.
How do CHAT and IGM differ by sector?
The widest gap is Technology: IGM has 29.1 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.
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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.