IGM vs VOO
iShares Expanded Tech Sector ETF vs Vanguard S&P 500 ETF
Which is better, IGM or VOO?
Large Cap Growth against Large Cap Blend.
VOO has a lower expense ratio. IGM led over 1Y, 3Y, 5Y and the full window. The two have moved almost in lockstep, correlation 0.90. VOO is less concentrated, with 37.6% of the fund in its ten largest positions against 57.7%.
MarketXLS is not an investment adviser. This comparison is generated automatically from market data and is for information only. A Best mark means the better reading on that one measure, not a recommendation to buy.
Side-by-Side Comparison
| Metric | IGM | VOO |
|---|---|---|
| Expense Ratio | 0.37% | 0.03%Best |
| AUM | $10.5B | $997.4B |
| Dividend Yield | 0.14% | 1.04% |
| Holdings | 301 | 509 |
| YTD Return | +26.90%Best | +12.37% |
| 1Y Return | +30.89%Best | +16.61% |
| 3Y Return (annualized) | +36.17%Best | +21.37% |
| 5Y Return (annualized) | +19.40%Best | +13.49% |
| Volatility (annualized) | 19.1% | 14.1%Best |
| Max Drawdown | -40.7% | -34.3%Best |
| $10,000 over 5 years | $24,267Best | $18,827 |
| Top 10 Weight | 57.7% | 37.6%Best |
| Fund Family | iShares by BlackRock (US) | Vanguard (US) |
| Category | Equity | Equity |
| Style | Large Cap Growth | Large Cap Blend |
| Inception | Mar 13, 2001 | Sep 7, 2010 |
Volatility and max drawdown are measured over the window both funds cover: Sep 9, 2010 to Sep 18, 2026 (16 years).
IGM vs VOO growth
Month-end closes. Both lines start at 0% in the first month shown, so the gap between them is the difference in growth across that window. The full view covers the 16 years both funds cover.
IGM vs VOO Performance
iShares Expanded Tech Sector ETF (IGM) is an ETF from iShares by BlackRock (US) and Vanguard S&P 500 ETF (VOO) is an ETF from Vanguard (US). Over the past year IGM returned +30.89% while VOO returned +16.61%. Year to date, IGM is up 26.90% versus a gain of 12.37% for VOO.
Over three years, IGM compounded at +36.17% per year against +21.37% for VOO; over five years the annualized figures are +19.40% and +13.49% respectively. Across the full 16-year window we track, IGM has the edge at +20.41% annualized vs +13.39%.
Past performance does not guarantee future results.
Risk: Volatility and Drawdowns
IGM has been the more volatile fund, with annualized monthly volatility of 19.1% compared with 14.1% for VOO. Lower volatility generally means a smoother ride, though it often comes with lower long-run returns.
The deepest peak-to-trough decline in our data was -40.7% for IGM and -34.3% for VOO. Drawdown depth is what each fund did in the worst stretch of the window measured above.
The two funds' monthly returns correlate at 0.90. They move almost in lockstep, so holding both mostly duplicates the same exposure.
Fees and Cost Over Time
IGM charges 0.37% per year while VOO charges 0.03%. On a $10,000 position that is $37 vs $3 annually, a gap of $34 per year that compounds over a long holding period. On income, IGM currently yields 0.14% against 1.04% for VOO.
Holdings Overlap
91.4% of IGM's money is in holdings VOO also owns. 44.9% of VOO's money is in holdings IGM also owns.
Most of IGM is already inside VOO. Owning both mostly buys the same companies twice.
77 positions in common, counted across the 269 positions we hold weights for in IGM and 494 in VOO, against full books of 301 and 509.
What only one of them owns
Our book lists 411 positions for VOO that do not appear in our book for IGM (54.3% of the fund), and 163 for IGM that do not appear in VOO (7.1%).
Some of those will be the same company recorded under a different code in one of the two books, so the real difference in what you would own is no larger than this and may be smaller. We do not name the individual positions here for that reason.
Top Shared Holdings
| Stock | Weight in IGM | Weight in VOO | Difference |
|---|---|---|---|
| NVDANvidia Corp | 8.94% | 7.55% | 1.39% |
| AAPLApple, Inc | 8.82% | 7.05% | 1.77% |
| MSFTMicrosoft Corp | 10.36% | 5.36% | 5.00% |
| AVGOBroadcom Inc | 7.58% | 2.86% | 4.72% |
| GOOGLAlphabet Inc,class A | 4.29% | 3.24% | 1.05% |
| METAMeta Platforms Inc | 4.31% | 1.90% | 2.41% |
| MUMicron Technology, Inc. | 4.62% | 1.44% | 3.18% |
| GOOGAlphabet Inc | 3.42% | 2.62% | 0.80% |
| AMDAdvanced Micro Devices Inc | 3.40% | 1.21% | 2.19% |
| CSCOCisco Systems Inc. - Ordinary Shares | 1.93% | 0.71% | 1.22% |
91.4% of IGM is already inside VOO.
You probably hold more than these two. Add the rest and see how much of the whole book is the same companies twice.
Free for up to 10 holdings. No account needed.
Frequently Asked Questions
Which is cheaper, IGM or VOO?
IGM has an expense ratio of 0.37% while VOO charges 0.03%. VOO is the cheaper option, by $34 a year on a $10,000 investment.
Which performed better, IGM or VOO?
Over the past year IGM returned +30.89% vs +16.61% for VOO, so IGM leads on 1-year performance. Over the longest common window we track (16 years), IGM annualized +20.41% vs +13.39% for VOO. Past performance does not guarantee future results. This is information, not a recommendation.
Which is riskier, IGM or VOO?
IGM has been the more volatile fund at 19.1% annualized versus 14.1% for VOO. Worst drawdown: IGM -40.7% vs VOO -34.3%.
Should I hold both IGM and VOO?
IGM and VOO have a monthly-return correlation of 0.90, so they move almost identically. What is left to separate them is the fee and the index each one tracks. This is information, not a recommendation.
What is the holdings overlap between IGM and VOO?
91.4% of IGM's money is in holdings VOO also owns. 44.9% of VOO's is in holdings IGM also owns. They hold 77 positions in common, counted across the 269 positions we hold weights for in IGM and 494 in VOO.
Which pays a higher dividend, IGM or VOO?
IGM yields 0.14% while VOO yields 1.04%, so VOO currently pays the higher dividend yield.
Is VOO better than IGM?
VOO has a lower expense ratio. IGM led over 1Y, 3Y, 5Y and the full window. The two have moved almost in lockstep, correlation 0.90. VOO is less concentrated, with 37.6% of the fund in its ten largest positions against 57.7%. Which one suits a particular account depends on what it is for. This is information, not a recommendation.