Data as of Oct 28, 2026.
ACWX vs IDEV: Differences, Returns & Fees
Over the year to Oct 28, 2026, ACWX returned +14.3% to IDEV's +13.4%; 68% of their weight is in the same names.
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Net assets: $17.9bn on Oct 27, 2026 for iShares MSCI ACWI ex U.S. ETF, and $34.0bn on Oct 28, 2026 for iShares Core MSCI International Developed Markets ETF.
Pair scorecard
IDEV costs 0.28 points a year less; their one-year returns differ by 0.9 points; IDEV is 1.9 times larger.
| Measure | ACWX | IDEV |
|---|---|---|
| Return | ||
| Total return, 1 year | +14.3% | +13.4% |
| Drawdown | ||
| Below its high | 4.9%, high on Sep 4, 2026 | 4.4%, high on Aug 25, 2026 |
| Benchmark | ||
| What it tracks | MSCI ACWI ex USA Index | MSCI World ex USA Investable Market Index |
| Cost and size | ||
| Expense ratio | 0.32% | 0.04% |
| Net assets, as of Oct 23, 2026 | $17.5bn | $33.5bn |
| Holdings | ||
| Holdings in common | 68% | |
| Top ten holdings, share of the fund | 15.6% | 10.9% |
Holdings in common uses holdings dated Oct 27, 2026. Method
Risk and return
Mar 31, 2017 to Oct 23, 2026 · 499 weekly returnsIDEV returned slightly more: +127.7% to +117.7%. ACWX and IDEV swung about the same: 16.8% and 17.0%. ACWX and IDEV fell about the same at their worst: −34.2% and −34.0%.
Full scorecard
9 measures, with how each is measured Open ↓
| Measure | ACWX | IDEV | Edge | How it is measured |
|---|---|---|---|---|
| Return | ||||
| Total return | +117.7% | +127.7% | IDEV (slight) | Price change plus distributions, reinvested. |
| Annualized | +8.4% | +9.0% | IDEV (slight) | Total return as a yearly rate. |
| Price return | +68.5% | +73.6% | IDEV (slight) | Price change alone, distributions left out. |
| Risk | ||||
| Volatility | 16.8% | 17.0% | Tie | Spread of weekly returns, annualized. Lower is steadier. |
| Downside deviation | 12.0% | 12.1% | Tie | Like volatility, counting only weeks below the Treasury bill rate. |
| Max drawdown | −34.2% | −34.0% | Tie | Deepest fall from a high to the low after it. |
| Risk-adjusted | ||||
| Sharpe | 0.41 | 0.44 | IDEV (slight) | Return above Treasury bills per unit of volatility. |
| Sortino | 0.58 | 0.61 | IDEV (slight) | Return above Treasury bills per unit of downside deviation. |
| Calmar | 0.25 | 0.26 | IDEV (slight) | Annualized return divided by the max drawdown. |
Computed by ETFIQ from Tiingo daily prices and ETFIQ's distribution records, 499 weekly returns. Cash rate: the 13-week Treasury bill.
What they share
By the books each fund has filed, ACWX and IDEV hold 68% of their money in the same securities at the same weight. Holdings dated Oct 27, 2026.
half
68% in common
Only in one fund ↓
Side by side
ACWX and IDEV on the fields both publish, as of Oct 28, 2026. Source: ETFIQ.
ACWX and IDEV are built for the same job. How do they differ in cost, holdings and results?
- What each follows. ACWX follows MSCI ACWI ex USA Index and IDEV follows MSCI World ex USA Investable Market Index.
- Cost. ACWX charges 0.32% of assets a year and IDEV 0.04%, a gap of 0.28 points.
- Holdings in common (similar). 68% of the weight is in the same securities (holdings dated Oct 27, 2026).
Data as of Oct 28, 2026.
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ACWX
ACWX tracks the MSCI ACWI ex U.S.. Over the year to Oct 28, 2026 it returned +14.3% with distributions reinvested. The prospectus expense ratio is 0.32% a year. By its holdings published by its issuer for Oct 27, 2026, 0% of the fund by weight is stocks the S&P 500 also holds, across 1,939 positions, with the top ten at 15.6%. It sat 4.9% below its high of Sep 4, 2026 on Oct 28, 2026.
IDEV
IDEV tracks the MSCI International Developed Markets. Over the year to Oct 28, 2026 it returned +13.4% with distributions reinvested, against +14.3% for its benchmark, the MSCI ACWI ex USA Index. The prospectus expense ratio is 0.04% a year. By its holdings published by its issuer for Oct 27, 2026, 0% of the fund by weight is stocks the S&P 500 also holds, across 2,317 positions, with the top ten at 10.9%. It sat 4.4% below its high of Aug 25, 2026 on Oct 28, 2026.
Questions people ask
- Which returned more over the last year, ACWX or IDEV?
- In the year to Oct 28, 2026, with distributions reinvested, ACWX returned +14.3% and IDEV +13.4%.
- Which is cheaper, ACWX or IDEV?
- IDEV is cheaper, by 0.28 percentage points a year. That is about $28 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, ACWX against IDEV, data as of Oct 28, 2026. https://etfiq.com/compare/any/acwx-vs-idev
ETFIQ. (Oct 28, 2026). ACWX against IDEV. Retrieved from https://etfiq.com/compare/any/acwx-vs-idev
[ACWX against IDEV (ETFIQ, Oct 28, 2026)](https://etfiq.com/compare/any/acwx-vs-idev)
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