IVVvsOEFETF Comparison
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iShares Core S&P 500 ETF (IVV) and iShares S&P 100 ETF (OEF) belong to the same industry segment: US Large Cap. Both ETFs have the same top 3 sector exposures: Technology, Finance and Consumer Non-Cyclicals. IVV is less expensive with a Total Expense Ratio (TER) of 0.03%, versus 0.2% for OEF. IVV is up 8.98% year-to-date (YTD) with +$41.04B in YTD flows. OEF performs worse with 6.43% YTD performance, and -$10.07B in YTD flows. Run a side-by-side ETF comparison of IVV and OEF below, and assess how they stack up in performance, liquidity, risk, exposure, holdings, and more, helping you select the best ETF for your investments.
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IVV vs OEF performance and flow charts
Performance
Cumulative Flows
Historic performance and flows
Data as of 07/27/2026
| 1M | 3M | YTD | 1Y | 3Y | 5Y | ||
|---|---|---|---|---|---|---|---|
| Perf. | IVV OEF | -0.30%+0.04% | +3.62%+3.00% | +8.98%+6.43% | +17.38%+16.46% | +69.94%+77.40% | +80.74%+90.22% |
| Flows | IVV OEF | -$13.54B-$166M | +$49.58B-$402M | +$41.04B-$10.07B | +$111.19B-$4.49B | +$234.33B+$2.58B | +$278.61B+$2.80B |
Volatility and drawdown
| 3M | 1Y | 3Y | 5Y | ||
|---|---|---|---|---|---|
| Volatility | IVV OEF | +12.87%+14.24% | +12.79%+13.75% | +15.07%+16.15% | +17.00%+17.90% |
| Max drawdown | IVV OEF | -4.46%-5.41% | -8.90%-10.96% | -18.75%-19.77% | -24.51%-26.44% |
| Max drawdown duration | IVV OEF | 55d56d | 76d169d | 126d126d | 708d696d |
Trading data
IVV | OEF | |
Last sale 7/27/2026 at 1:30 PM | $742.55 | $363.22 |
| Previous close 07/27/2026 | $742.36 | $363.23 |
| Consolidated volume 07/27/2026 | ||
| Average volume 30 days | ||
| Average discount or premium 30 days | ||
| Average Bid/Ask spread 30 days |
Replication quality
Data as of June 30, 2026
1-year trailing difference
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IVV | OEF | |
|---|---|---|
| Tracking error | ||
| Tracking difference | ||
| 1 year cumulative return difference | ||
| Best | ||
| Worst | ||
| Daily return difference | ||
| Average | ||
| Worst | ||
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Main metrics
Last update 7/27/2026 at 1:30 PM
Live
Closed
IVV | OEF | |
|---|---|---|
| Last price | $742.55 | $363.22 |
| 1D performance | +0.03% | -0.00% |
| AuM | $866.90 B | $19.72 B |
| E/R | 0.03% | 0.2% |
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Exposure
Countries
IVV
USA
97.51%
Other
2.49%
OEF
USA
98.96%
Other
1.04%
Sectors
IVV
Technology
45.76%
Finance
13.15%
Consumer Non-Cycl.
8.77%
Healthcare
8.67%
Industrials
7.94%
Other
15.71%
OEF
Technology
53.77%
Finance
11.08%
Consumer Non-Cycl.
10.3%
Healthcare
8.67%
Other
16.18%
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Diversification
IVV
Total weight of top 15 holdings out of 15
43.1%
OEF
Total weight of top 15 holdings out of 15
60.12%
Top 15 holdings
Data as of June 30, 2026
IVV
NVIDIA Corp.
7.51%
Apple, Inc.
6.58%
Microsoft Corp.
4.29%
Amazon.com, Inc.
3.61%
Alphabet, Inc.
3.25%
Broadcom Inc.
2.77%
Alphabet, Inc.
2.59%
Micron Technology, Inc.
2.02%
Meta Platforms, Inc.
1.92%
Tesla, Inc.
1.83%
Eli Lilly & Co.
1.47%
Advanced Micro Devices, Inc.
1.47%
Berkshire Hathaway, Inc.
1.42%
JPMorgan Chase & Co.
1.36%
Intel Corp.
1.02%
OEF
NVIDIA Corp.
10.47%
Apple, Inc.
9.18%
Microsoft Corp.
5.99%
Amazon.com, Inc.
5.04%
Alphabet, Inc.
4.53%
Broadcom Inc.
3.86%
Alphabet, Inc.
3.61%
Micron Technology, Inc.
2.81%
Meta Platforms, Inc.
2.67%
Tesla, Inc.
2.56%
Eli Lilly & Co.
2.05%
Advanced Micro Devices, Inc.
2.05%
Berkshire Hathaway, Inc.
1.98%
JPMorgan Chase & Co.
1.90%
Intel Corp.
1.43%
Frequently asked questions about IVV and OEF
How have the IVV and OEF ETFs performed in 2026?
As of July 27, 2026, IVV is up 8.98% year-to-date (YTD), while OEF has returned 6.43%. That puts IVV better performer ahead so far this year.
Which ETF is attracting more investor money: IVV or OEF?
Year-to-date, the IVV ETF saw +$41.04B in flows, compared to -$10.07B for OEF.
Which ETF is more volatile: IVV or OEF?
Over the past year, IVV had a volatility of 12.79%, while OEF experienced 13.75%.
Which ETF is bigger: IVV or OEF?
As of July 27, 2026, IVV holds $866.90 B in assets under management (AUM), while OEF manages $19.72 B.
What sectors do the IVV and OEF ETFs invest in?
IVV leans toward sectors like Technology, Finance and Consumer Non-Cyclicals. Meanwhile, OEF focuses on Technology, Finance and Consumer Non-Cyclicals.
What are the top holdings of the IVV ETF and OEF ETF?
IVV top holdings include NVIDIA Corp., Apple, Inc. and Microsoft Corp.. OEF holds in its top three: NVIDIA Corp., Apple, Inc. and Microsoft Corp..
Which ETF is more diversified: IVV or OEF?
IVV holds 504 securities with 43.1% of its assets in the top 15. OEF has 103 securities and a top 15 weight of 60.12%.
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