MGKvsIWYETF Comparison
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Vanguard Mega Cap Growth ETF (MGK) and iShares Russell Top 200 Growth ETF (IWY) belong to the same industry segment: US Large Cap Growth. Both ETFs have the same top 3 sector exposures: Information Technology, Communication Services and Consumer Discretionary. MGK is less expensive with a Total Expense Ratio (TER) of 0.05%, versus 0.2% for IWY. MGK is up 2.14% year-to-date (YTD) with -$937M in YTD flows. IWY performs worse with 1.32% YTD performance, and +$144M in YTD flows. Run a side-by-side ETF comparison of MGK and IWY 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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MGK vs IWY performance and flow charts
Performance
Cumulative Flows
Historic performance and flows
Data as of 04/24/2026
| 1M | 3M | YTD | 1Y | 3Y | 5Y | ||
|---|---|---|---|---|---|---|---|
| Perf. | MGK IWY | +13.59%+11.95% | +2.75%+1.99% | +2.14%+1.32% | +36.87%+34.19% | +109.58%+105.23% | +93.02%+99.14% |
| Flows | MGK IWY | +$251M-$6M | -$432M-$131M | -$937M+$144M | +$1.15B+$718M | +$5.35B+$3.17B | +$7.73B+$5.69B |
Volatility and drawdown
| 3M | 1Y | 3Y | 5Y | ||
|---|---|---|---|---|---|
| Volatility | MGK IWY | +21.24%+20.35% | +16.92%+16.30% | +20.00%+19.53% | +22.79%+21.64% |
| Max drawdown | MGK IWY | -14.37%-13.33% | -16.79%-16.56% | -23.44%-23.25% | -36.04%-32.74% |
| Max drawdown duration | MGK IWY | 79d79d | 177d177d | 124d192d | 745d715d |
Trading data
MGK | IWY | |
Last sale 4/27/2026 at 1:30 PM | $84.45 | $280.96 |
| Previous close 04/24/2026 | $84.26 | $280.30 |
| Consolidated volume 04/24/2026 | ||
| Average volume 30 days | ||
| Average discount or premium 30 days | ||
| Average Bid/Ask spread 30 days |
Replication quality
Data as of March 31, 2026
1-year trailing difference
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MGK | IWY | |
|---|---|---|
| Tracking error | ||
| Tracking difference | ||
| 1 year cumulative return difference | ||
| Best | ||
| Worst | ||
| Daily return difference | ||
| Average | ||
| Worst | ||
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Main metrics
Last update 4/27/2026 at 1:30 PM
Live
Closed
MGK | IWY | |
|---|---|---|
| Last price | $84.45 | $280.96 |
| 1D performance | +0.23% | +0.24% |
| AuM | $32.02 B | $16.55 B |
| E/R | 0.05% | 0.2% |
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Exposure
Countries
MGK
USA
99.63%
Other
0.37%
IWY
USA
98.74%
Other
1.26%
Sectors
MGK
Information Techn.
55.93%
Communication Ser.
16.17%
Consumer Discreti.
13.06%
Other
14.85%
IWY
Information Techn.
56.02%
Communication Ser.
12.6%
Consumer Discreti.
11.3%
Health Care
7.47%
Other
12.62%
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Diversification
MGK
Total weight of top 15 holdings out of 15
74%
IWY
Total weight of top 15 holdings out of 15
72.51%
Top 15 holdings
Data as of March 31, 2026
MGK
NVIDIA
13.72%
APPLE
12.58%
MICROSOFT-T
9.00%
ALPHABET INC-CL
5.50%
AMAZON.COM INC
4.59%
BROADCOM LIMITED
4.40%
ALPHABET INC-CL
4.36%
TESLA
4.18%
META PLATFORMS
4.16%
LILLY
3.17%
VISA INCORPORATION
1.96%
NETFLIX
1.75%
MASTERCARD
1.72%
ADVANCED MICRO DEVICES
1.49%
PALANTIR TECHNOLOGIES
1.41%
IWY
NVIDIA
14.62%
APPLE
13.13%
MICROSOFT-T
9.91%
AMAZON.COM INC
4.46%
BROADCOM LIMITED
4.31%
ALPHABET INC-CL
3.93%
TESLA
3.52%
META PLATFORMS
3.42%
ALPHABET INC-CL
3.20%
LILLY
2.88%
VISA INCORPORATION
2.16%
COSTCO WHOLESALE
1.88%
NETFLIX
1.73%
MASTERCARD
1.71%
ABBVIE
1.64%
Frequently asked questions about MGK and IWY
How have the MGK and IWY ETFs performed in 2026?
As of April 24, 2026, MGK is up 2.14% year-to-date (YTD), while IWY has returned 1.32%. That puts MGK better performer ahead so far this year.
Which ETF is attracting more investor money: MGK or IWY?
Year-to-date, the MGK ETF saw -$937M in flows, compared to +$144M for IWY.
Which ETF is more volatile: MGK or IWY?
Over the past year, MGK had a volatility of 16.92%, while IWY experienced 16.3%.
Which ETF is bigger: MGK or IWY?
As of April 24, 2026, MGK holds $32.02 B in assets under management (AUM), while IWY manages $16.55 B.
What sectors do the MGK and IWY ETFs invest in?
MGK leans toward sectors like Information Technology, Communication Services and Consumer Discretionary. Meanwhile, IWY focuses on Information Technology, Communication Services and Consumer Discretionary.
What are the top holdings of the MGK ETF and IWY ETF?
MGK top holdings include NVIDIA, APPLE and MICROSOFT-T. IWY holds in its top three: NVIDIA, APPLE and MICROSOFT-T.
Which ETF is more diversified: MGK or IWY?
MGK holds 59 securities with 74% of its assets in the top 15. IWY has 111 securities and a top 15 weight of 72.51%.
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