Keep tabs on your favorite ETFs with a personalized weekly tracker. Create a Watchlist now →
OEFvsMGCETF Comparison
iShares S&P 100 ETF (OEF) and Vanguard Mega Cap ETF (MGC) belong to the same industry segment: US Large Cap. Both ETFs have the same top 3 sector exposures: Information Technology, Communication Services and Consumer Discretionary. OEF is more expensive with a Total Expense Ratio (TER) of 0.2%, versus 0.05% for MGC. OEF is down -2.73% year-to-date (YTD) with +$200M in YTD flows. MGC performs better with -1.61% YTD performance, and -$387M in YTD flows. Run a side-by-side ETF comparison of OEF and MGC below, and assess how they stack up in performance, liquidity, risk, exposure, holdings, and more, helping you select the best ETF for your investments.
OEF vs MGC performance and flow charts
Performance
Cumulative Flows
| 1M | 3M | YTD | 1Y | 3Y | 5Y | ||
|---|---|---|---|---|---|---|---|
| Perf. | OEF MGC | -2.44%-2.11% | -3.22%-2.08% | -2.73%-1.61% | +23.63%+23.44% | +98.02%+91.30% | +99.83%+91.40% |
| Flows | OEF MGC | +$301M-$13M | +$407M+$320M | +$200M-$387M | +$8.02B+$1.60B | +$12.81B+$2.42B | +$13.13B+$2.63B |
| 3M | 1Y | 3Y | 5Y | ||
|---|---|---|---|---|---|
| Volatility | OEF MGC | +12.07%+11.83% | +19.24%+18.73% | +15.80%+15.21% | +17.65%+17.33% |
| Max drawdown | OEF MGC | -4.55%-3.98% | -14.24%-13.99% | -19.77%-19.36% | -26.44%-25.79% |
| Max drawdown duration | OEF MGC | 75d57d | 45d45d | 126d126d | 696d707d |
OEF | MGC | |
Last sale 3/11/2026 at 1:30 PM | $333.47 | $246.97 |
| Previous close 03/10/2026 | $333.60 | $247.04 |
| Consolidated volume 03/10/2026 | ||
| Average volume 30 days | ||
| Average discount or premium 30 days | ||
| Average Bid/Ask spread 30 days |
Create an account to view replication metrics
OEF | MGC | |
|---|---|---|
| Tracking error | ||
| Tracking difference | ||
| 1 year cumulative return difference | ||
| Best | ||
| Worst | ||
| Daily return difference | ||
| Average | ||
| Worst | ||
OEF | MGC | |
|---|---|---|
| Last price | $333.47 | $246.97 |
| 1D performance | -0.04% | -0.03% |
| AuM | $28.58 B | $9.32 B |
| E/R | 0.2% | 0.05% |
Countries
Sectors
Diversification
Total weight of top 15 holdings out of 15
Total weight of top 15 holdings out of 15
Top 15 holdings
How have the OEF and MGC ETFs performed in 2026?
As of March 10, 2026, OEF is down -2.73% year-to-date (YTD), while MGC has lost -1.61%. That puts MGC better performer ahead so far this year.
Which ETF is attracting more investor money: OEF or MGC?
Year-to-date, the OEF ETF saw +$200M in flows, compared to -$387M for MGC.
Which ETF is more volatile: OEF or MGC?
Over the past year, OEF had a volatility of 19.24%, while MGC experienced 18.73%.
Which ETF is bigger: OEF or MGC?
As of March 10, 2026, OEF holds $28.58 B in assets under management (AUM), while MGC manages $9.32 B.
What sectors do the OEF and MGC ETFs invest in?
OEF leans toward sectors like Information Technology, Communication Services and Consumer Discretionary. Meanwhile, MGC focuses on Information Technology, Communication Services and Consumer Discretionary.
What are the top holdings of the OEF ETF and MGC ETF?
OEF top holdings include NVIDIA, APPLE and MICROSOFT-T. MGC holds in its top three: NVIDIA, APPLE and MICROSOFT-T.
Which ETF is more diversified: OEF or MGC?
OEF holds 102 securities with 61.62% of its assets in the top 15. MGC has 175 securities and a top 15 weight of 52.77%.
MoneyShow Chart of the Day 10/21/2025: THESE Sectors Should Drive Q3 Profit Growth
3 ETFs that Beat the S&P 500 in 2024
ETFs for Exposure to the "Magnificent Seven" Stocks
ETFs for Exposure to the "Magnificent Seven" Stocks
Calamos Investments Powers the Next Phase of the Autocallable Revolution
Join J.P. Morgan’s Bram Kaplan, Head of Americas Equity Derivatives Strategy and Matt Kaufman from Calamos Investments as they dive into the growing global opportunity in autocallable income—an increasingly dominant strategy within structured products, now available through ETFs.
Accepted for 1 CE Credit
