Data as of Oct 28, 2026.
IGM vs VOO: Differences, Returns & Fees
Over the year to Oct 28, 2026, IGM returned +21.7% to VOO's +13.7%; 48% of their weight is in the same names.
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Net assets: $11.0bn on Oct 27, 2026 for iShares Expanded Tech Sector ETF, and $1.0tn on Sep 30, 2026 for Vanguard S&P 500 ETF.
Pair scorecard
VOO costs 0.34 points a year less; their one-year returns differ by 8.0 points; VOO is far larger, $1.0tn against $11.4bn.
| Measure | IGM | VOO |
|---|---|---|
| Return | ||
| Total return, 1 year | +21.7% | +13.7% |
| Drawdown | ||
| Below its high | 6.2%, high on Oct 6, 2026 | |
| Benchmark | ||
| What it tracks | S&P North American Expanded Technology Sector Index | S&P 500 Index |
| Cost and size | ||
| Expense ratio | 0.37% | 0.03% |
| Net assets, as of Sep 30, 2026 | $11.4bn | $1.0tn |
| Holdings | ||
| Holdings in common | 48% | |
| Top ten holdings, share of the fund | 56.8% | 39.1% |
Holdings in common uses holdings dated Sep 30, 2026 and Oct 27, 2026. Method
Risk and return
Sep 17, 2010 to Oct 23, 2026 · 840 weekly returnsIGM returned more: +1,844.0% to +804.0%. VOO swung less: 15.9% to 20.7%. VOO fell less at its worst: −31.8% to −40.1%.
Full scorecard
9 measures, with how each is measured Open ↓
| Measure | IGM | VOO | Edge | How it is measured |
|---|---|---|---|---|
| Return | ||||
| Total return | +1,844.0% | +804.0% | IGM | Price change plus distributions, reinvested. |
| Annualized | +20.2% | +14.6% | IGM | Total return as a yearly rate. |
| Price return | +1,673.2% | +575.9% | IGM | Price change alone, distributions left out. |
| Risk | ||||
| Volatility | 20.7% | 15.9% | VOO | Spread of weekly returns, annualized. Lower is steadier. |
| Downside deviation | 13.6% | 10.9% | VOO | Like volatility, counting only weeks below the Treasury bill rate. |
| Max drawdown | −40.1% | −31.8% | VOO | Deepest fall from a high to the low after it. |
| Risk-adjusted | ||||
| Sharpe | 0.91 | 0.84 | IGM (slight) | Return above Treasury bills per unit of volatility. |
| Sortino | 1.39 | 1.22 | IGM | Return above Treasury bills per unit of downside deviation. |
| Calmar | 0.50 | 0.46 | IGM (slight) | Annualized return divided by the max drawdown. |
Computed by ETFIQ from Tiingo daily prices and ETFIQ's distribution records, 840 weekly returns. Cash rate: the 13-week Treasury bill.
What they share
By the books each fund has filed, IGM and VOO hold 48% of their money in the same securities at the same weight. Holdings dated Sep 30, 2026 and Oct 27, 2026.
half
48% in common
Only in one fund ↓
Side by side
IGM and VOO on the fields both publish, as of Oct 28, 2026. Source: ETFIQ.
IGM and VOO do different jobs. What does each one do in a portfolio?
- What each follows. IGM follows S&P North American Expanded Technology Sector Index and VOO follows S&P 500 Index.
- Holdings in common. 48% of the weight is in the same securities (holdings dated Oct 27, 2026 and Sep 30, 2026).
- One-year total return. Over 1 year to Oct 28, 2026 IGM returned +21.7% and VOO +13.7% with distributions reinvested, a gap of 8.0 points.
Data as of Oct 28, 2026.
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IGM
IGM tracks an index of Expanded Tech Sector. Over the year to Oct 28, 2026 it returned +21.7% with distributions reinvested. The prospectus expense ratio is 0.37% 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 295 positions, with the top ten at 56.8%. It sat 6.2% below its high of Oct 6, 2026 on Oct 28, 2026.
VOO
VOO tracks the S&P 500. Over the year to Oct 28, 2026 it returned +13.7% with distributions reinvested, against +13.7% for its benchmark, the S&P 500 Index. The prospectus expense ratio is 0.03% 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 507 positions, with the top ten at 39.1%.
Questions people ask
- Which returned more over the last year, IGM or VOO?
- In the year to Oct 28, 2026, with distributions reinvested, IGM returned +21.7% and VOO +13.7%.
- Which is cheaper, IGM or VOO?
- VOO is cheaper, by 0.34 percentage points a year. That is about $34 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.
Cite this pageCitation, APA and Markdown
ETFIQ, IGM against VOO, data as of Oct 28, 2026. https://etfiq.com/compare/any/igm-vs-voo
ETFIQ. (Oct 28, 2026). IGM against VOO. Retrieved from https://etfiq.com/compare/any/igm-vs-voo
[IGM against VOO (ETFIQ, Oct 28, 2026)](https://etfiq.com/compare/any/igm-vs-voo)
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