IWB vs TMFC: Differences, Returns & Fees
IWB and TMFC hold 51% of their weight in the same names, and IWB returned +16.6% over the year. Net assets: $49.6bn on Oct 9, 2026 for iShares Russell 1000 ETF, and $2.1bn on May 31, 2026 for Motley Fool 100 Index ETF.
IWB costs 0.35 points a year less; their one-year returns differ by 1.5 points; IWB is far larger, $39.2bn against $1.3bn.
| IWB | TMFC | |
|---|---|---|
| Expense ratio | 0.15% | 0.50% |
| Net assets, as of Feb 28, 2025 | $39.2bn | $1.3bn |
| Total return, 1 year | +16.6% | +15.1% |
| What it tracks | Russell 1000 Index | Motley Fool 100 Index |
| Holdings in common | 51% | |
| Top ten holdings, share of the fund | 36.1% | 55.2% |
Holdings in common uses holdings dated May 31, 2026 and Oct 9, 2026.
What they hold in common
By the books each fund has filed, IWB and TMFC hold 51% of their money in the same securities at the same weight. Above 50%, holding both is close to holding one of them twice. Holdings dated May 31, 2026 and Oct 9, 2026.
half
51% in common
On the same fields
IWB and TMFC on the fields both publish, as of Oct 9, 2026. Source: ETFIQ.
About IWB
IWB tracks the Russell 1000. Over the year to Oct 9, 2026 it returned +16.6% with distributions reinvested, against +16.8% for its benchmark, the Russell 1000 Index. The prospectus expense ratio is 0.15% a year. By its holdings published by its issuer for Oct 9, 2026, 92% of the fund by weight is stocks the S&P 500 also holds, across 1,025 positions, with the top ten at 36.1%.
About TMFC
TMFC tracks an index. Over the year to Oct 9, 2026 it returned +15.1% with distributions reinvested. The prospectus expense ratio is 0.50% a year. By its holdings filed for May 31, 2026, 98% of the fund by weight is stocks the S&P 500 also holds, across 101 positions, with the top ten at 55.2%.
Questions people ask
- Which returned more over the last year, IWB or TMFC?
- In the year to Oct 9, 2026, with distributions reinvested, IWB returned +16.6% and TMFC +15.1%.
- Which is cheaper, IWB or TMFC?
- IWB is cheaper, by 0.35 percentage points a year. That is about $35 on $10,000 held for a year. Fees come from each fund's prospectus.
ETFIQ links to the documents behind every figure; a link is not an endorsement. A comparison is not a recommendation.
How this is computed
Overlap adds up the smaller of the two weights for each security both funds hold.
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ETFIQ, IWB against TMFC, data as of Oct 9, 2026. https://etfiq.com/compare/any/iwb-vs-tmfc
ETFIQ. (Oct 9, 2026). IWB against TMFC. Retrieved from https://etfiq.com/compare/any/iwb-vs-tmfc
[IWB against TMFC (ETFIQ, Oct 9, 2026)](https://etfiq.com/compare/any/iwb-vs-tmfc)
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