Data as of Oct 28, 2026.
IGM vs SPY: Differences, Returns & Fees
Over the year to Oct 28, 2026, IGM returned +21.7% to SPY's +13.6%; 46% of their weight is in the same names.
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Net assets on Oct 27, 2026: $11.0bn for iShares Expanded Tech Sector ETF and $814.8bn for SPDR S&P 500 ETF Trust.
Pair scorecard
SPY costs 0.28 points a year less; their one-year returns differ by 8.1 points; SPY is far larger, $814.8bn against $11.0bn.
| Measure | IGM | SPY |
|---|---|---|
| Return | ||
| Total return, 1 year | +21.7% | +13.6% |
| 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% | 0.09% |
| Net assets, as of Oct 27, 2026 | $11.0bn | $814.8bn |
| Holdings | ||
| Holdings in common | 46% | |
| Top ten holdings, share of the fund | 56.8% | 38.1% |
Holdings in common uses holdings dated Oct 27, 2026. Method
Risk and return
Mar 30, 2001 to Oct 23, 2026 · 1,334 weekly returnsIGM returned more: +1,968.5% to +929.0%. SPY swung less: 17.5% to 23.5%. SPY fell less at its worst: −54.6% to −62.6%.
Full scorecard
9 measures, with how each is measured Open ↓
| Measure | IGM | SPY | Edge | How it is measured |
|---|---|---|---|---|
| Return | ||||
| Total return | +1,968.5% | +929.0% | IGM | Price change plus distributions, reinvested. |
| Annualized | +12.5% | +9.5% | IGM | Total return as a yearly rate. |
| Price return | +1,744.2% | +551.3% | IGM | Price change alone, distributions left out. |
| Risk | ||||
| Volatility | 23.5% | 17.5% | SPY | Spread of weekly returns, annualized. Lower is steadier. |
| Downside deviation | 16.1% | 12.4% | SPY | Like volatility, counting only weeks below the Treasury bill rate. |
| Max drawdown | −62.6% | −54.6% | SPY | Deepest fall from a high to the low after it. |
| Risk-adjusted | ||||
| Sharpe | 0.55 | 0.51 | IGM (slight) | Return above Treasury bills per unit of volatility. |
| Sortino | 0.80 | 0.71 | IGM | Return above Treasury bills per unit of downside deviation. |
| Calmar | 0.20 | 0.17 | IGM | Annualized return divided by the max drawdown. |
Computed by ETFIQ from Tiingo daily prices and ETFIQ's distribution records, 1,334 weekly returns. Cash rate: the 13-week Treasury bill.
What they share
By the books each fund has filed, IGM and SPY hold 46% of their money in the same securities at the same weight. Holdings dated Oct 27, 2026.
half
46% in common
Only in one fund ↓
Side by side
IGM and SPY on the fields both publish, as of Oct 28, 2026. Source: ETFIQ.
IGM and SPY 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 SPY follows S&P 500 Index.
- Holdings in common. 46% of the weight is in the same securities (holdings dated Oct 27, 2026).
- One-year total return. Over 1 year to Oct 28, 2026 IGM returned +21.7% and SPY +13.6% with distributions reinvested, a gap of 8.1 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.
SPY
SPY tracks the S&P 500. Over the year to Oct 28, 2026 it returned +13.6% with distributions reinvested, against +13.7% for its benchmark, the S&P 500 Index. The prospectus expense ratio is 0.09% a year. By its holdings published by its issuer for Oct 27, 2026, 100% of the fund by weight is stocks the S&P 500 also holds, across 504 positions, with the top ten at 38.1%.
Questions people ask
- Which returned more over the last year, IGM or SPY?
- In the year to Oct 28, 2026, with distributions reinvested, IGM returned +21.7% and SPY +13.6%.
- Which is cheaper, IGM or SPY?
- SPY 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, IGM against SPY, data as of Oct 28, 2026. https://etfiq.com/compare/any/igm-vs-spy
ETFIQ. (Oct 28, 2026). IGM against SPY. Retrieved from https://etfiq.com/compare/any/igm-vs-spy
[IGM against SPY (ETFIQ, Oct 28, 2026)](https://etfiq.com/compare/any/igm-vs-spy)
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