FEXvsSIZEETF Comparison
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First Trust Large Cap Core AlphaDEX Fund ETF (FEX) belongs to the US Multi-Factor segment. iShares MSCI USA Size Factor ETF (SIZE) is part of the US Large Cap segment. Both ETFs have the same top 3 sector exposures: Finance, Technology and Industrials. FEX is more expensive with a Total Expense Ratio (TER) of 0.57%, versus 0.15% for SIZE. FEX is up 15.42% year-to-date (YTD) with -$3M in YTD flows. SIZE performs worse with 10.71% YTD performance, and -$556K in YTD flows. Run a side-by-side ETF comparison of FEX and SIZE 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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FEX vs SIZE performance and flow charts
Performance
Cumulative Flows
Historic performance and flows
Data as of 07/24/2026
| 1M | 3M | YTD | 1Y | 3Y | 5Y | ||
|---|---|---|---|---|---|---|---|
| Perf. | FEX SIZE | -0.98%+1.23% | +5.47%+5.21% | +15.42%+10.71% | +22.23%+13.90% | +62.68%+46.39% | +67.00%+46.74% |
| Flows | FEX SIZE | +$2M- | +$15M-$103K | -$3M-$556K | -$31M+$16M | -$177M-$21M | -$195M-$351M |
Volatility and drawdown
| 3M | 1Y | 3Y | 5Y | ||
|---|---|---|---|---|---|
| Volatility | FEX SIZE | +14.60%+11.16% | +13.25%+12.24% | +14.91%+14.56% | +16.92%+17.06% |
| Max drawdown | FEX SIZE | -3.74%-2.26% | -6.27%-7.92% | -19.51%-18.57% | -21.53%-24.05% |
| Max drawdown duration | FEX SIZE | 24d8d | 47d49d | 232d219d | 757d820d |
Trading data
FEX | SIZE | |
Last sale 7/27/2026 at 1:30 PM | $136.51 | $179.23 |
| Previous close 07/24/2026 | $136.23 | $177.78 |
| Consolidated volume 07/24/2026 | ||
| 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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FEX | SIZE | |
|---|---|---|
| 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
FEX | SIZE | |
|---|---|---|
| Last price | $136.51 | $179.23 |
| 1D performance | +0.21% | +0.82% |
| AuM | $1.57 B | $426.81 M |
| E/R | 0.57% | 0.15% |
Characteristics
FEX | SIZE | |
|---|---|---|
| Management strategy | Passive | Passive |
| Provider | First Trust | iShares |
| Benchmark | NASDAQ AlphaDEX Large Cap Core Index | MSCI USA Low Size Index |
| N° of holdings | 374 | 520 |
| Asset class | Equities | Equities |
| Trailing 12m distribution yield | Join | Join |
| Inception date | May 8, 2007 | April 16, 2013 |
| ESG | No | No |
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Exposure
Countries
FEX
USA
96.22%
Other
3.78%
SIZE
USA
93.73%
Other
6.27%
Sectors
FEX
Finance
20.42%
Technology
18.76%
Industrials
17.76%
Healthcare
9.11%
Utilities
7.05%
Other
26.9%
SIZE
Finance
20.78%
Technology
17.58%
Industrials
14.24%
Healthcare
10.89%
Consumer Non-Cycl.
7.05%
Other
29.46%
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Diversification
FEX
Total weight of top 15 holdings out of 15
12.1%
SIZE
Total weight of top 15 holdings out of 15
4.36%
Top 15 holdings
Data as of June 30, 2026
FEX
Sandisk Corp.
1.24%
Micron Technology, Inc.
1.19%
Dell Technologies, Inc.
1.01%
Seagate Technology Holdings Plc
0.91%
Western Digital Corp.
0.86%
Marvell Technology, Inc.
0.85%
Advanced Micro Devices, Inc.
0.83%
Bloom Energy Corp.
0.83%
Humana, Inc.
0.73%
MKS, Inc.
0.69%
Corning, Inc.
0.63%
MACOM Technology Solutions Holdings, Inc.
0.61%
Applied Materials, Inc.
0.59%
United Airlines Holdings, Inc.
0.57%
Teradyne, Inc.
0.56%
SIZE
Astera Labs, Inc.
0.36%
Dell Technologies, Inc.
0.32%
Okta, Inc.
0.30%
Applied Materials, Inc.
0.30%
Credo Technology Group Holding Ltd.
0.30%
KLA Corp.
0.30%
Marvell Technology, Inc.
0.29%
SharkNinja, Inc.
0.28%
United Airlines Holdings, Inc.
0.28%
Entegris, Inc.
0.27%
Teradyne, Inc.
0.27%
Snowflake, Inc.
0.27%
Micron Technology, Inc.
0.27%
Lam Research Corp.
0.27%
Axon Enterprise, Inc.
0.26%
Frequently asked questions about FEX and SIZE
How have the FEX and SIZE ETFs performed in 2026?
As of July 24, 2026, FEX is up 15.42% year-to-date (YTD), while SIZE has returned 10.71%. That puts FEX better performer ahead so far this year.
Which ETF is attracting more investor money: FEX or SIZE?
Year-to-date, the FEX ETF saw -$3M in flows, compared to -$556K for SIZE.
Which ETF is more volatile: FEX or SIZE?
Over the past year, FEX had a volatility of 13.25%, while SIZE experienced 12.24%.
Which ETF is bigger: FEX or SIZE?
As of July 24, 2026, FEX holds $1.57 B in assets under management (AUM), while SIZE manages $426.81 M.
What sectors do the FEX and SIZE ETFs invest in?
FEX leans toward sectors like Finance, Technology and Industrials. Meanwhile, SIZE focuses on Finance, Technology and Industrials.
What are the top holdings of the FEX ETF and SIZE ETF?
FEX top holdings include Sandisk Corp., Micron Technology, Inc. and Dell Technologies, Inc.. SIZE holds in its top three: Astera Labs, Inc., Dell Technologies, Inc. and Okta, Inc..
Which ETF is more diversified: FEX or SIZE?
FEX holds 374 securities with 12.1% of its assets in the top 15. SIZE has 529 securities and a top 15 weight of 4.36%.
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