OEFvsUSMCETF Comparison
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iShares S&P 100 ETF (OEF) and Principal U.S. Mega-Cap ETF (USMC) belong to the same industry segment: US Large Cap. OEF's top 3 sector exposures are Information Technology, Communication Services and Consumer Discretionary. In contrast, USMC's top sector exposures are Information Technology, Communication Services and Financials. OEF is more expensive with a Total Expense Ratio (TER) of 0.2%, versus 0.12% for USMC. OEF is up 2.95% year-to-date (YTD) with -$9.73B in YTD flows. USMC performs worse with 1.97% YTD performance, and -$141M in YTD flows. Run a side-by-side ETF comparison of OEF and USMC 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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OEF vs USMC performance and flow charts
Performance
Cumulative Flows
Historic performance and flows
Data as of 04/29/2026
| 1M | 3M | YTD | 1Y | 3Y | 5Y | ||
|---|---|---|---|---|---|---|---|
| Perf. | OEF USMC | +14.19%+11.57% | +2.63%+2.84% | +2.95%+1.97% | +32.04%+24.26% | +90.32%+77.86% | +95.42%+93.97% |
| Flows | OEF USMC | -$359M+$10M | -$9.89B-$54M | -$9.73B-$141M | -$2.34B-$61M | +$2.89B+$469M | +$3.30B-$225M |
Volatility and drawdown
| 3M | 1Y | 3Y | 5Y | ||
|---|---|---|---|---|---|
| Volatility | OEF USMC | +16.42%+14.61% | +13.33%+12.24% | +15.97%+14.83% | +17.79%+16.45% |
| Max drawdown | OEF USMC | -10.49%-8.31% | -10.96%-10.32% | -19.77%-19.07% | -26.44%-24.11% |
| Max drawdown duration | OEF USMC | 71d63d | 169d169d | 126d139d | 696d542d |
Trading data
OEF | USMC | |
Last sale 4/30/2026 at 1:30 PM | $354.80 | $70.40 |
| Previous close 04/29/2026 | $352.08 | $69.90 |
| Consolidated volume 04/29/2026 | ||
| Average volume 30 days | ||
| Average discount or premium 30 days | ||
| Average Bid/Ask spread 30 days |
Replication quality
Data as of April 29, 2026
1-year trailing difference
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USMC
is actively managed and doesn’t replicate an indexOEF | USMC | |
|---|---|---|
| Tracking error | ||
| Tracking difference | ||
| 1 year cumulative return difference | ||
| Best | ||
| Worst | ||
| Daily return difference | ||
| Average | ||
| Worst | ||
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Main metrics
Last update 4/30/2026 at 1:30 PM
Live
Closed
OEF | USMC | |
|---|---|---|
| Last price | $354.80 | $70.40 |
| 1D performance | +0.77% | +0.72% |
| AuM | $19.43 B | $3.14 B |
| E/R | 0.2% | 0.12% |
Characteristics
OEF | USMC | |
|---|---|---|
| Management strategy | Passive | Active |
| Provider | iShares | Principal Global Investors |
| Benchmark | S&P 100 Index | - |
| N° of holdings | 97 | 26 |
| Asset class | Equities | - |
| Trailing 12m distribution yield | Join | Join |
| Inception date | October 23, 2000 | October 11, 2017 |
| ESG | No | No |
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Exposure
Countries
OEF
USA
98.8%
Other
1.2%
USMC
USA
97.74%
Other
2.26%
Sectors
OEF
Information Techn.
40.48%
Communication Ser.
13.53%
Consumer Discreti.
10.23%
Health Care
9.26%
Financials
8.64%
Other
17.86%
USMC
Information Techn.
35.59%
Communication Ser.
14.16%
Financials
11.52%
Health Care
9.17%
Consumer Discreti.
8.2%
Consumer Staples
7.71%
Other
13.65%
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Diversification
OEF
Total weight of top 15 holdings out of 15
58.88%
USMC
Total weight of top 15 holdings out of 15
70.09%
Top 15 holdings
Data as of March 31, 2026
OEF
NVIDIA
10.50%
APPLE
9.23%
MICROSOFT-T
6.81%
AMAZON.COM INC
5.04%
ALPHABET INC-CL
4.15%
BROADCOM LIMITED
3.64%
ALPHABET INC-CL
3.32%
META PLATFORMS
3.10%
TESLA
2.59%
BERKSHIRE HATHWAY
2.18%
JPMORGAN CHASE
1.96%
LILLY
1.81%
EXXON
1.76%
JOHNSON&JOHNSON
1.46%
WALMART INC
1.35%
USMC
NVIDIA
7.58%
APPLE
6.71%
ALPHABET INC-CL
5.38%
MICROSOFT-T
4.92%
NETFLIX
4.66%
COSTCO WHOLESALE
4.60%
JPMORGAN CHASE
4.57%
BROADCOM LIMITED
4.52%
MASTERCARD
4.50%
VISA INCORPORATION
4.40%
META PLATFORMS
4.11%
AMAZON.COM INC
3.63%
JOHNSON&JOHNSON
3.55%
BK OF AMERICA CO
3.53%
BERKSHIRE HATHWAY
3.43%
Frequently asked questions about OEF and USMC
How have the OEF and USMC ETFs performed in 2026?
As of April 29, 2026, OEF is up 2.95% year-to-date (YTD), while USMC has returned 1.97%. That puts OEF better performer ahead so far this year.
Which ETF is attracting more investor money: OEF or USMC?
Year-to-date, the OEF ETF saw -$9.73B in flows, compared to -$141M for USMC.
Which ETF is more volatile: OEF or USMC?
Over the past year, OEF had a volatility of 13.33%, while USMC experienced 12.24%.
Which ETF is bigger: OEF or USMC?
As of April 29, 2026, OEF holds $19.43 B in assets under management (AUM), while USMC manages $3.14 B.
What sectors do the OEF and USMC ETFs invest in?
OEF leans toward sectors like Information Technology, Communication Services and Consumer Discretionary. Meanwhile, USMC focuses on Information Technology, Communication Services and Financials.
What are the top holdings of the OEF ETF and USMC ETF?
OEF top holdings include NVIDIA, APPLE and MICROSOFT-T. USMC holds in its top three: NVIDIA, APPLE and ALPHABET INC-CL.
Which ETF is more diversified: OEF or USMC?
OEF holds 102 securities with 58.88% of its assets in the top 15. USMC has 26 securities and a top 15 weight of 70.09%.
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