At a glance
IVV and VOO hold almost the same stocks in almost the same amounts: 99.6% of their holdings overlap by weight. IVV is an ordinary open-end ETF and VOO a share class of Vanguard 500 Index Fund, which also sells mutual fund shares. Both charge 0.03% a year, $30 on every $100,000. IVV has $888.13B in assets and VOO $1.67T (all share classes); over the past 12 months IVV paid out 1.11% of its price and VOO 1.07%, both quarterly. Over the past year IVV returned +11.5% and VOO +12.4% with distributions reinvested; over five years, +11.8% and +12.0% a year. In the 2022 bear market IVV fell 24.5% at its worst and VOO 24.5%; both were back at their earlier highs 14 months after the low.
Key differences
| IVV | VOO | |
|---|---|---|
| Fund | iShares Core S&P 500 ETF | Vanguard S&P 500 ETF |
| Issuer | iShares | Vanguard |
| Structure | Open-end ETF | ETF share class |
| Type | S&P 500 | S&P 500 |
| Launched | May 15, 2000 | Sep 7, 2010 |
| Expense ratio | 0.03% | 0.03% |
| Cost a year on $100,000 | $30 | $30 |
| Net assets | $888.13B | $1.67T * |
| Holdings | 504 | 506 |
| Ten largest positions | 36.4% | 36.4% |
| Yield (12 months) | 1.11% | 1.07% |
| Pays | quarterly | quarterly |
| Portfolio turnover | 3% a year | 2% a year |
| Price data from | Jul 18, 2005 | Jun 2, 2020 |
Holdings and overlap
Overlap adds up, for every security both funds own, the smaller of its two weights: 100% would mean identical portfolios.
Largest holdings
| Holding | IVV | VOO |
|---|---|---|
| NVIDIA Corp. | 7.51% | 7.51% |
| Apple, Inc. | 6.58% | 6.59% |
| Microsoft Corp. | 4.29% | 4.30% |
| Amazon.com, Inc. | 3.61% | 3.62% |
| Alphabet, Inc. Class A | 3.25% | 3.25% |
| Broadcom, Inc. | 2.77% | 2.77% |
| Alphabet, Inc. Class C | 2.59% | 2.59% |
| Micron Technology, Inc. | 2.02% | 2.02% |
| Meta Platforms, Inc. | 1.92% | 1.92% |
| Tesla, Inc. | 1.83% | 1.84% |
No large holding differs by as much as half a percentage point between the two.
By sector
| Sector | IVV | VOO | Difference |
|---|---|---|---|
| Technology | 35.2% | 35.2% | — |
| Financials | 10.8% | 10.6% | IVV +0.2 |
| Communication services | 9.3% | 9.3% | — |
| Consumer discretionary | 9.1% | 9.1% | — |
| Health care | 7.1% | 7.1% | — |
| Industrials | 6.8% | 6.8% | — |
| Consumer staples | 4.4% | 4.4% | — |
| Energy | 2.7% | 2.7% | — |
| Utilities | 1.9% | 1.9% | — |
| Materials | 1.3% | 1.3% | — |
| Real estate | 1.3% | 1.3% | — |
Returns
$10,000 put into IVV on Jun 30, 2020 was worth $26,789 on Oct 30, 2026, and in VOO $26,780 (+16.8% and +16.8% a year). That is as far back as the price data for both goes.
| 1 yr | 3 yr | 5 yr | 10 yr | |
|---|---|---|---|---|
| IVV price data to Nov 2, 2026 | +11.5% | +22.0% | +11.8% | +15.5% |
| IVV official prospectus, to Dec 31, 2025 | +17.85% | — | +14.39% | +14.78% |
| VOO price data to Oct 30, 2026 | +12.4% | +23.6% | +12.0% | — |
| VOO official prospectus, to Dec 31, 2025 | +17.84% | — | +14.38% | +14.78% |
Calendar years
| Year | IVV | VOO | Difference |
|---|---|---|---|
| 2026 | +11.2% * | +11.8% * | VOO +0.6 |
| 2025 | +17.9% | +17.8% | — |
| 2024 | +24.9% | +25.0% | — |
| 2023 | +26.3% | +26.3% | — |
| 2022 | -18.2% | -18.2% | — |
| 2021 | +28.8% | +28.8% | — |
| 2020 | +18.4% | +18.35% † | |
| 2019 | +31.3% | +31.46% † | |
| 2018 | -4.5% | -4.42% † | |
| 2017 | +21.8% | — |
Downturns and recovery
| IVV | VOO | |
|---|---|---|
| 2008 financial crisis stocks fell Oct 9, 2007 – Mar 9, 2009 | −55.3% at the worst; back at its high 41 months after the low | Before it launched |
| 2020 COVID crash stocks fell Feb 19, 2020 – Mar 23, 2020 | −33.9% at the worst; back at its high 5 months after the low | Not in the price data (starts Jun 2, 2020) |
| 2022 bear market stocks fell Jan 3, 2022 – Oct 12, 2022 | −24.5% at the worst; back at its high 14 months after the low | −24.5% at the worst; back at its high 14 months after the low |
| Worst fall in the price data | −55.3% (Oct 9, 2007 – Mar 9, 2009) | −24.5% (Jan 3, 2022 – Oct 12, 2022) |
Income
| Year | IVV | VOO |
|---|---|---|
| 2025 | $136 | $131 |
| 2024 | $160 | $153 |
| 2023 | $180 | $181 |
| 2022 | $134 | $136 |
| 2021 | $152 | $158 |
Costs
Both funds charge 0.03% a year. The fee comes out of each fund's assets, so it is already in the returns above.
| Cost of $10,000 (SEC example) | 1 yr | 3 yrs | 5 yrs | 10 yrs |
|---|---|---|---|---|
| IVV | $3 | $10 | $17 | $39 |
| VOO | $3 | $10 | $17 | $39 |