SIZEvsRSPETF Comparison
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iShares MSCI USA Size Factor ETF (SIZE) and Invesco S&P 500® Equal Weight ETF (RSP) belong to the same industry segment: US Large Cap. Both ETFs have the same top 3 sector exposures: Finance, Technology and Industrials. SIZE is less expensive with a Total Expense Ratio (TER) of 0.15%, versus 0.2% for RSP. SIZE is up 11.63% year-to-date (YTD) with -$556K in YTD flows. RSP performs better with 13.11% YTD performance, and +$13.46B in YTD flows. Run a side-by-side ETF comparison of SIZE and RSP 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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SIZE vs RSP performance and flow charts
Performance
Cumulative Flows
Historic performance and flows
Data as of 09/11/2026
| 1M | 3M | YTD | 1Y | 3Y | 5Y | ||
|---|---|---|---|---|---|---|---|
| Perf. | SIZE RSP | -3.04%-2.62% | +2.33%+2.82% | +11.63%+13.11% | +12.50%+14.76% | +53.17%+52.61% | +45.96%+51.19% |
| Flows | SIZE RSP | -+$2.53B | -+$5.41B | -$556K+$13.46B | +$16M+$13.71B | -$15M+$32.87B | -$271M+$46.66B |
Volatility and drawdown
| 3M | 1Y | 3Y | 5Y | ||
|---|---|---|---|---|---|
| Volatility | SIZE RSP | +10.50%+10.31% | +12.28%+11.64% | +14.58%+13.99% | +17.12%+16.16% |
| Max drawdown | SIZE RSP | -4.80%-4.31% | -7.92%-7.88% | -18.57%-17.79% | -24.05%-21.48% |
| Max drawdown duration | SIZE RSP | 29d26d | 49d65d | 219d220d | 820d752d |
Trading data
SIZE | RSP | |
Last sale 9/11/2026 at 1:30 PM | $179.22 | $214.87 |
| Previous close 09/11/2026 | $177.94 | $213.17 |
| Consolidated volume 09/11/2026 | ||
| Average volume 30 days | ||
| Average discount or premium 30 days | ||
| Average Bid/Ask spread 30 days |
Replication quality
Data as of August 31, 2026
1-year trailing difference
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SIZE | RSP | |
|---|---|---|
| Tracking error | ||
| Tracking difference | ||
| 1 year cumulative return difference | ||
| Best | ||
| Worst | ||
| Daily return difference | ||
| Average | ||
| Worst | ||
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Main metrics
Last update 9/11/2026 at 1:30 PM
Live
Closed
SIZE | RSP | |
|---|---|---|
| Last price | $179.22 | $214.87 |
| 1D performance | +0.72% | +0.80% |
| AuM | $430.36 M | $98.65 B |
| E/R | 0.15% | 0.2% |
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Exposure
Countries
SIZE
USA
94.33%
Other
5.67%
RSP
USA
95.31%
Other
4.69%
Sectors
SIZE
Finance
21.9%
Technology
16.31%
Industrials
13.66%
Healthcare
11.31%
Consumer Non-Cycl.
7.29%
Other
29.52%
RSP
Finance
21.59%
Technology
14.34%
Industrials
13.75%
Healthcare
12.32%
Consumer Non-Cycl.
7.79%
Other
30.21%
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Diversification
SIZE
Total weight of top 15 holdings out of 15
4.16%
RSP
Total weight of top 15 holdings out of 15
3.81%
Top 15 holdings
Data as of July 31, 2026
SIZE
Snowflake, Inc.
0.32%
Okta, Inc.
0.31%
SharkNinja, Inc.
0.30%
Dell Technologies, Inc.
0.30%
Best Buy Co., Inc.
0.28%
International Paper Co.
0.28%
Illumina, Inc.
0.27%
Toast, Inc.
0.27%
NetApp, Inc.
0.27%
Dollar Tree, Inc.
0.27%
CDW Corp.
0.27%
Hewlett Packard Enterprise Co.
0.26%
Genuine Parts Co.
0.26%
United Airlines Holdings, Inc.
0.25%
Williams-Sonoma, Inc.
0.25%
RSP
PayPal Holdings, Inc.
0.28%
Global Payments, Inc.
0.27%
Expedia Group, Inc.
0.27%
Bio-Techne Corp.
0.26%
IQVIA Holdings, Inc.
0.26%
International Paper Co.
0.26%
Genuine Parts Co.
0.25%
GoDaddy, Inc.
0.25%
Zebra Technologies Corp.
0.25%
The Travelers Cos., Inc.
0.25%
DoorDash, Inc.
0.25%
Garmin Ltd.
0.24%
Veeva Systems, Inc.
0.24%
Jack Henry & Associates, Inc.
0.24%
Charles River Laboratories International, Inc.
0.24%
Frequently asked questions about SIZE and RSP
How have the SIZE and RSP ETFs performed in 2026?
As of September 11, 2026, SIZE is up 11.63% year-to-date (YTD), while RSP has returned 13.11%. That puts RSP better performer ahead so far this year.
Which ETF is attracting more investor money: SIZE or RSP?
Year-to-date, the SIZE ETF saw -$556K in flows, compared to +$13.46B for RSP.
Which ETF is more volatile: SIZE or RSP?
Over the past year, SIZE had a volatility of 12.28%, while RSP experienced 11.64%.
Which ETF is bigger: SIZE or RSP?
As of September 11, 2026, SIZE holds $430.36 M in assets under management (AUM), while RSP manages $98.65 B.
What sectors do the SIZE and RSP ETFs invest in?
SIZE leans toward sectors like Finance, Technology and Industrials. Meanwhile, RSP focuses on Finance, Technology and Industrials.
What are the top holdings of the SIZE ETF and RSP ETF?
SIZE top holdings include Snowflake, Inc., Okta, Inc. and SharkNinja, Inc.. RSP holds in its top three: PayPal Holdings, Inc., Global Payments, Inc. and Expedia Group, Inc..
Which ETF is more diversified: SIZE or RSP?
SIZE holds 529 securities with 4.16% of its assets in the top 15. RSP has 503 securities and a top 15 weight of 3.81%.
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Latest news about SIZE & RSP
Avoid S&P 500 Concentration Risk with These Two ETFs
July 28, 2026
RSP
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