Data as of Oct 28, 2026.
ACWI vs IWB: Differences, Returns & Fees
Over the year to Oct 28, 2026, ACWI returned +13.4% to IWB's +13.1%; 65% of their weight is in the same names.
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Net assets on Oct 28, 2026: $33.0bn for iShares MSCI ACWI ETF and $49.1bn for iShares Russell 1000 ETF.
Pair scorecard
IWB costs 0.17 points a year less; their one-year returns differ by 0.3 points; IWB is 1.5 times larger.
| Measure | ACWI | IWB |
|---|---|---|
| Return | ||
| Total return, 1 year | +13.4% | +13.1% |
| Benchmark | ||
| What it tracks | MSCI ACWI | Russell 1000 Index |
| Cost and size | ||
| Expense ratio | 0.32% | 0.15% |
| Net assets | $33.0bn | $49.1bn |
| Holdings | ||
| Holdings in common | 65% | |
| Top ten holdings, share of the fund | 24.9% | 35.3% |
Holdings in common uses holdings dated Oct 27, 2026. Method
Risk and return
Apr 4, 2008 to Oct 23, 2026 · 968 weekly returnsIWB returned more: +662.3% to +333.1%. ACWI and IWB swung about the same: 18.5% and 18.3%. IWB fell slightly less at its worst: −51.3% to −55.3%.
Full scorecard
9 measures, with how each is measured Open ↓
| Measure | ACWI | IWB | Edge | How it is measured |
|---|---|---|---|---|
| Return | ||||
| Total return | +333.1% | +662.3% | IWB | Price change plus distributions, reinvested. |
| Annualized | +8.2% | +11.5% | IWB | Total return as a yearly rate. |
| Price return | +204.7% | +456.3% | IWB | Price change alone, distributions left out. |
| Risk | ||||
| Volatility | 18.5% | 18.3% | Tie | Spread of weekly returns, annualized. Lower is steadier. |
| Downside deviation | 13.2% | 12.9% | IWB (slight) | Like volatility, counting only weeks below the Treasury bill rate. |
| Max drawdown | −55.3% | −51.3% | IWB (slight) | Deepest fall from a high to the low after it. |
| Risk-adjusted | ||||
| Sharpe | 0.44 | 0.61 | IWB | Return above Treasury bills per unit of volatility. |
| Sortino | 0.62 | 0.87 | IWB | Return above Treasury bills per unit of downside deviation. |
| Calmar | 0.15 | 0.22 | IWB | Annualized return divided by the max drawdown. |
Computed by ETFIQ from Tiingo daily prices and ETFIQ's distribution records, 968 weekly returns. Cash rate: the 13-week Treasury bill.
What they share
By the books each fund has filed, ACWI and IWB hold 65% of their money in the same securities at the same weight. Holdings dated Oct 27, 2026.
half
65% in common
Only in one fund ↓
Side by side
ACWI and IWB on the fields both publish, as of Oct 28, 2026. Source: ETFIQ.
ACWI and IWB do different jobs. What does each one do in a portfolio?
- What each follows. ACWI follows MSCI ACWI and IWB follows Russell 1000 Index.
- Cost. ACWI charges 0.32% of assets a year and IWB 0.15%, a gap of 0.17 points.
- Holdings in common (similar). 65% of the weight is in the same securities (holdings dated Oct 27, 2026).
Data as of Oct 28, 2026.
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ACWI
ACWI tracks the MSCI ACWI. Over the year to Oct 28, 2026 it returned +13.4% with distributions reinvested. The prospectus expense ratio is 0.32% a year. By its holdings published by its issuer for Oct 27, 2026, 61% of the fund by weight is stocks the S&P 500 also holds, across 2,197 positions, with the top ten at 24.9%.
IWB
IWB tracks the Russell 1000. Over the year to Oct 28, 2026 it returned +13.1% with distributions reinvested, against +13.2% 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 27, 2026, 92% of the fund by weight is stocks the S&P 500 also holds, across 1,025 positions, with the top ten at 35.3%.
Questions people ask
- Which returned more over the last year, ACWI or IWB?
- In the year to Oct 28, 2026, with distributions reinvested, ACWI returned +13.4% and IWB +13.1%.
- Which is cheaper, ACWI or IWB?
- IWB is cheaper, by 0.17 percentage points a year. That is about $17 on $10,000 held for a year. Fees come from each fund's prospectus.
Links are sources, not endorsements. 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, ACWI against IWB, data as of Oct 28, 2026. https://etfiq.com/compare/any/acwi-vs-iwb
ETFIQ. (Oct 28, 2026). ACWI against IWB. Retrieved from https://etfiq.com/compare/any/acwi-vs-iwb
[ACWI against IWB (ETFIQ, Oct 28, 2026)](https://etfiq.com/compare/any/acwi-vs-iwb)
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