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: Information Technology, Industrials and Financials. SIZE is less expensive with a Total Expense Ratio (TER) of 0.15%, versus 0.2% for RSP. SIZE is up 5.03% year-to-date (YTD) with -$452K in YTD flows. RSP performs better with 5.26% YTD performance, and +$7.41B 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 04/27/2026
| 1M | 3M | YTD | 1Y | 3Y | 5Y | ||
|---|---|---|---|---|---|---|---|
| Perf. | SIZE RSP | +8.35%+6.76% | +1.76%+1.65% | +5.03%+5.26% | +21.34%+21.50% | +52.85%+45.36% | +44.35%+46.91% |
| Flows | SIZE RSP | +$8M-$2.28B | -$452K+$2.55B | -$452K+$7.41B | +$31M+$3.58B | -$33M+$34.23B | -$715M+$42.51B |
Volatility and drawdown
| 3M | 1Y | 3Y | 5Y | ||
|---|---|---|---|---|---|
| Volatility | SIZE RSP | +14.49%+13.31% | +12.59%+12.24% | +14.67%+14.02% | +17.10%+16.21% |
| Max drawdown | SIZE RSP | -7.92%-7.88% | -7.92%-7.88% | -18.57%-17.79% | -24.05%-21.48% |
| Max drawdown duration | SIZE RSP | 49d58d | 49d58d | 219d220d | 820d752d |
Trading data
SIZE | RSP | |
Last sale 4/28/2026 at 7:36 PM | $167.89 | $199.89 |
| Previous close 04/28/2026 | $169.34 | $200.76 |
| Consolidated volume 04/28/2026 | ||
| 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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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 4/28/2026 at 7:36 PM
Live
Closed
SIZE | RSP | |
|---|---|---|
| Last price | $167.89 | $199.89 |
| 1D performance | -0.86% | -0.43% |
| AuM | $406.03 M | $86.56 B |
| E/R | 0.15% | 0.2% |
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Exposure
Countries
SIZE
USA
93.01%
Other
6.99%
RSP
USA
94.08%
Other
5.92%
Sectors
SIZE
Information Techn.
16.23%
Industrials
15.4%
Financials
12.22%
Health Care
9.66%
Consumer Discreti.
9.26%
Other
37.23%
RSP
Information Techn.
15.39%
Industrials
14.49%
Financials
13.3%
Health Care
10.84%
Consumer Discreti.
9.74%
Other
36.24%
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Diversification
SIZE
Total weight of top 15 holdings out of 15
4.62%
RSP
Total weight of top 15 holdings out of 15
3.64%
Top 15 holdings
Data as of March 31, 2026
SIZE
DOW INC
0.37%
LYONDELLBASELL INDUSTRIES
0.37%
CIENA
0.36%
ECHOSTAR
0.33%
TERADYNE
0.32%
WESTERN DIGITAL
0.31%
CF INDUSTRIES HOLDINGS
0.31%
KEYSIGHT TECHNOLOGIES
0.29%
OCCIDENTAL U
0.29%
CORNING
0.28%
HALLIBURTON
0.28%
TARGA RESOURCS
0.28%
ENTEGRIS
0.28%
DEVON ENERGY
0.28%
TEXAS PACIFIC LAND CORP
0.28%
RSP
APA CORPORATION
0.28%
LYONDELLBASELL INDUSTRIES
0.25%
DOW INC
0.25%
CIENA
0.25%
OCCIDENTAL U
0.24%
DELL TECHNOLOGIES INC
0.24%
COTERRA ENERGY
0.24%
DEVON ENERGY
0.24%
CONOCOPHILLIPS
0.24%
DIAMONDBACK ENERGY
0.24%
CF INDUSTRIES HOLDINGS
0.24%
EOG RESOURCES
0.23%
EXXON
0.23%
HALLIBURTON
0.23%
BROWN FORMAN
0.23%
Frequently asked questions about SIZE and RSP
How have the SIZE and RSP ETFs performed in 2026?
As of April 27, 2026, SIZE is up 5.03% year-to-date (YTD), while RSP has returned 5.26%. 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 -$452K in flows, compared to +$7.41B for RSP.
Which ETF is more volatile: SIZE or RSP?
Over the past year, SIZE had a volatility of 12.59%, while RSP experienced 12.24%.
Which ETF is bigger: SIZE or RSP?
As of April 27, 2026, SIZE holds $406.03 M in assets under management (AUM), while RSP manages $86.56 B.
What sectors do the SIZE and RSP ETFs invest in?
SIZE leans toward sectors like Information Technology, Industrials and Financials. Meanwhile, RSP focuses on Information Technology, Industrials and Financials.
What are the top holdings of the SIZE ETF and RSP ETF?
SIZE top holdings include DOW INC, LYONDELLBASELL INDUSTRIES and CIENA. RSP holds in its top three: APA CORPORATION, LYONDELLBASELL INDUSTRIES and DOW INC.
Which ETF is more diversified: SIZE or RSP?
SIZE holds 538 securities with 4.62% of its assets in the top 15. RSP has 503 securities and a top 15 weight of 3.64%.
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