Data as of Sep 13, 2026. Both funds on the fields they both publish, from the same sources.
IGM vs IWC: how they differ
IGM and IWC hold 0% of their weight in the same names, and IGM returned more over the year.
iShares Expanded Tech Sector ETF and iShares Micro-Cap ETF.
What they hold in common
By the books each fund has filed, IGM and IWC hold 0% of their money in the same securities at the same weight.
| Holding | IGM | IWC |
|---|---|---|
| USD CASH | 0.05% | 0.11% |
| BLK CSH FND TREASURY SL AGENCY | 0.05% | 0.03% |
| ARLO TECHNOLOGIES | 0.01% | 0.33% |
| OUSTER | 0.01% | 0.52% |
| PENGUIN SOLUTIONS INC | 0.01% | 0.58% |
| SOUNDHOUND AI CLASS A | 0.01% | 0.01% |
| Only in IGM | Only in IWC |
|---|---|
| MICROSOFT 10.11% | CAREDX 0.61% |
| APPLE 9.14% | SELLAS LIFE SCIENCES GROUP INC 0.60% |
| NVIDIA 8.89% | NURIX THERAPEUTICS 0.59% |
| BROADCOM INC 7.42% | VIRIDIAN THERAPEUTICS ORS 0.48% |
| META PLATFORMS CLASS A 4.87% | INTERFACE 0.47% |
| MICRON TECHNOLOGY 4.73% | MBX BIOSCIENCES 0.45% |
| ALPHABET CLASS A 4.23% | UROGEN PHARMA 0.43% |
| ADVANCED MICRO DEVICES 3.66% | INNODATA 0.40% |
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.
| IGM iShares Expanded Tech Sector ETF | IWC iShares Micro-Cap ETF | |
|---|---|---|
| Where it sits | Core index fund | Core index fund |
| Issuer | iShares | iShares |
| What it is | Expanded Tech Sector | Russell Microcap |
| Total return, 1 year | +32.7% | +31.3% |
| S&P 500 over the same days | +17.5% | +17.5% |
| Gap to the S&P 500 | +15.2 pts | +13.8 pts |
| Expense ratio | 0.37% | not published |
| Already in the S&P 500 | 92.0% | 91.9% |
| Holdings | 272 | 1252 |
IGM in plain words
IGM is an index equity fund tracking the Expanded Tech Sector. Over the year to Sep 11, 2026 it returned +32.7% 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 Sep 10, 2026, 92% of the fund by weight is stocks the S&P 500 also holds, across 272 positions, with the top ten at 58.6%. It sat 5.1% below its high of Jun 2, 2026 on Sep 11, 2026.
IWC in plain words
IWC is an index equity fund tracking the Russell Microcap. Over the year to Sep 11, 2026 it returned +31.3% with distributions reinvested, against +17.5% for the S&P 500 and +23.0% for the Nasdaq-100. By its holdings filed for Sep 10, 2026, 92% of the fund by weight is stocks the S&P 500 also holds, across 1252 positions, with the top ten at 5.1%. It sat 5.0% below its high of Aug 14, 2026 on Sep 11, 2026.
Questions people ask
- Which returned more over the last year, IGM or IWC?
- In the year to Sep 13, 2026, with distributions reinvested, IGM returned +32.7% and IWC returned +31.3%, so IGM returned more. One year is one year; the longer windows are in the table.
- How much do IGM and IWC overlap with the S&P 500?
- By their latest filed holdings, 92% of IGM and 92% of IWC by weight is stocks the S&P 500 already holds. Between the two funds, 0% 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, IGM against IWC, data as of Sep 13, 2026. https://etfiq.com/compare/any/igm-vs-iwc Free to use with attribution; the underlying files are at Open data.
A comparison is not a recommendation. Standards and sources