RSPvsSIZEETF Comparison
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Invesco S&P 500® Equal Weight ETF (RSP) and iShares MSCI USA Size Factor ETF (SIZE) belong to the same industry segment: US Large Cap. Both ETFs have the same top 3 sector exposures: Information Technology, Industrials and Financials. RSP is more expensive with a Total Expense Ratio (TER) of 0.2%, versus 0.15% for SIZE. RSP is up 6.33% year-to-date (YTD) with +$7.15B in YTD flows. SIZE performs worse with 5.71% YTD performance, and -$452K in YTD flows. Run a side-by-side ETF comparison of RSP 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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RSP vs SIZE performance and flow charts
Performance
Cumulative Flows
Historic performance and flows
Data as of 05/01/2026
| 1M | 3M | YTD | 1Y | 3Y | 5Y | ||
|---|---|---|---|---|---|---|---|
| Perf. | RSP SIZE | +5.34%+6.58% | +2.33%+3.08% | +6.33%+5.71% | +22.02%+21.27% | +46.93%+52.46% | +47.62%+45.55% |
| Flows | RSP SIZE | -$2.80B+$8M | +$3.46B-$452K | +$7.15B-$452K | +$3.97B+$31M | +$33.85B-$33M | +$42.05B-$715M |
Volatility and drawdown
| 3M | 1Y | 3Y | 5Y | ||
|---|---|---|---|---|---|
| Volatility | RSP SIZE | +13.59%+14.80% | +12.31%+12.66% | +14.03%+14.67% | +16.21%+17.11% |
| Max drawdown | RSP SIZE | -7.88%-7.92% | -7.88%-7.92% | -17.79%-18.57% | -21.48%-24.05% |
| Max drawdown duration | RSP SIZE | 61d49d | 61d49d | 220d219d | 752d820d |
Trading data
RSP | SIZE | |
Last sale 5/1/2026 at 1:30 PM | $202.82 | $170.35 |
| Previous close 04/29/2026 | $203.44 | $170.59 |
| Consolidated volume 04/29/2026 | ||
| Average volume 30 days | ||
| Average discount or premium 30 days | ||
| Average Bid/Ask spread 30 days |
Replication quality
Data as of April 30, 2026
1-year trailing difference
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RSP | 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 5/1/2026 at 1:30 PM
Live
Closed
RSP | SIZE | |
|---|---|---|
| Last price | $202.82 | $170.35 |
| 1D performance | -0.30% | -0.14% |
| AuM | $87.19 B | $408.63 M |
| E/R | 0.2% | 0.15% |
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Exposure
Countries
RSP
USA
94.08%
Other
5.92%
SIZE
USA
93.01%
Other
6.99%
Sectors
RSP
Information Techn.
15.39%
Industrials
14.49%
Financials
13.3%
Health Care
10.84%
Consumer Discreti.
9.74%
Other
36.24%
SIZE
Information Techn.
16.23%
Industrials
15.4%
Financials
12.22%
Health Care
9.66%
Consumer Discreti.
9.26%
Other
37.23%
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Diversification
RSP
Total weight of top 15 holdings out of 15
3.64%
SIZE
Total weight of top 15 holdings out of 15
4.62%
Top 15 holdings
Data as of March 31, 2026
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%
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%
Frequently asked questions about RSP and SIZE
How have the RSP and SIZE ETFs performed in 2026?
As of May 1, 2026, RSP is up 6.33% year-to-date (YTD), while SIZE has returned 5.71%. That puts RSP better performer ahead so far this year.
Which ETF is attracting more investor money: RSP or SIZE?
Year-to-date, the RSP ETF saw +$7.15B in flows, compared to -$452K for SIZE.
Which ETF is more volatile: RSP or SIZE?
Over the past year, RSP had a volatility of 12.31%, while SIZE experienced 12.66%.
Which ETF is bigger: RSP or SIZE?
As of May 1, 2026, RSP holds $87.19 B in assets under management (AUM), while SIZE manages $408.63 M.
What sectors do the RSP and SIZE ETFs invest in?
RSP leans toward sectors like Information Technology, Industrials and Financials. Meanwhile, SIZE focuses on Information Technology, Industrials and Financials.
What are the top holdings of the RSP ETF and SIZE ETF?
RSP top holdings include APA CORPORATION, LYONDELLBASELL INDUSTRIES and DOW INC. SIZE holds in its top three: DOW INC, LYONDELLBASELL INDUSTRIES and CIENA.
Which ETF is more diversified: RSP or SIZE?
RSP holds 503 securities with 3.64% of its assets in the top 15. SIZE has 538 securities and a top 15 weight of 4.62%.
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