IUSG vs VOOG: Differences, Returns & Fees
IUSG and VOOG hold 94% of their weight in the same names. Net assets: $33.6bn on Oct 20, 2026 for iShares Core S&P U.S. Growth ETF, and $27.8bn on Sep 30, 2026 for Vanguard S&P 500 Growth ETF.
IUSG costs 0.01 points a year less; their one-year returns differ by 0.1 points; IUSG is 1.2 times larger.
| IUSG | VOOG | |
|---|---|---|
| Expense ratio | 0.04% | 0.05% |
| Net assets, as of Sep 30, 2026 | $34.0bn | $27.8bn |
| Total return, 1 year | +15.9% | +15.8% |
| What it tracks | S&P 900 Growth Index | S&P 500 Growth Index |
| Holdings in common | 94% | |
| Top ten holdings, share of the fund | 57.4% | 60.2% |
| Below its high | 4.1%, high on Oct 6, 2026 | 4.2%, high on Oct 6, 2026 |
Holdings in common uses holdings dated Sep 30, 2026 and Oct 19, 2026.
IUSG and VOOG are built for the same job. How do they differ in cost, holdings and results?
- What each follows. IUSG follows S&P 900 Growth Index and VOOG follows S&P 500 Growth Index.
- Holdings in common (similar). 94% of the weight is in the same securities (holdings dated Oct 19, 2026 and Sep 30, 2026).
- One-year total return (similar). Over 1 year to Oct 20, 2026 IUSG returned +15.9% and VOOG +15.8% with distributions reinvested, a gap of 0.1 points.
Data as of Oct 20, 2026. The differences are picked by a fixed rule, in a fixed order; the PDF prints it. Page 2 has the returns, overlap, risks and sources.
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What they hold in common
By the books each fund has filed, IUSG and VOOG hold 94% of their money in the same securities at the same weight. Holdings dated Sep 30, 2026 and Oct 19, 2026.
half
94% in common
On the same fields
IUSG and VOOG on the fields both publish, as of Oct 20, 2026. Source: ETFIQ.
About IUSG
IUSG tracks an index. Over the year to Oct 20, 2026 it returned +15.9% with distributions reinvested. The prospectus expense ratio is 0.04% a year. By its holdings published by its issuer for Oct 19, 2026, 95% of the fund by weight is stocks the S&P 500 also holds, across 402 positions, with the top ten at 57.4%. It sat 4.1% below its high of Oct 6, 2026 on Oct 20, 2026.
About VOOG
VOOG tracks the S&P 500 Growth. Over the year to Oct 20, 2026 it returned +15.8% with distributions reinvested, against +15.7% for its benchmark, the S&P 500 Growth Index. The prospectus expense ratio is 0.05% a year. By its holdings published by its issuer as of Sep 30, 2026, 100% of the fund by weight is stocks the S&P 500 also holds, across 154 positions, with the top ten at 60.2%. It sat 4.2% below its high of Oct 6, 2026 on Oct 20, 2026.
Questions people ask
- Which returned more over the last year, IUSG or VOOG?
- In the year to Oct 20, 2026, with distributions reinvested, IUSG returned +15.9% and VOOG +15.8%.
- Which is cheaper, IUSG or VOOG?
- IUSG is cheaper, by 0.01 percentage points a year. That is about $1 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, IUSG against VOOG, data as of Oct 20, 2026. https://etfiq.com/compare/any/iusg-vs-voog
ETFIQ. (Oct 20, 2026). IUSG against VOOG. Retrieved from https://etfiq.com/compare/any/iusg-vs-voog
[IUSG against VOOG (ETFIQ, Oct 20, 2026)](https://etfiq.com/compare/any/iusg-vs-voog)
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