SEISvsPRFZETF Comparison
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SEI Select Small Cap ETF (SEIS) belongs to the US Small Cap segment. Invesco RAFI US 1500 Small-Mid ETF (PRFZ) is part of the US Multi-Factor segment. Both ETFs have the same top 3 sector exposures: Finance, Healthcare and Technology. SEIS is more expensive with a Total Expense Ratio (TER) of 0.55%, versus 0.36% for PRFZ. SEIS is up 14.11% year-to-date (YTD) with +$149M in YTD flows. PRFZ performs better with 16.2% YTD performance, and -$256M in YTD flows. Run a side-by-side ETF comparison of SEIS and PRFZ 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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SEIS vs PRFZ performance and flow charts
Performance
Cumulative Flows
Historic performance and flows
Data as of 09/14/2026
| 1M | 3M | YTD | 1Y | 3Y | 5Y | ||
|---|---|---|---|---|---|---|---|
| Perf. | SEIS PRFZ | -5.49%-6.18% | -2.71%+0.07% | +14.11%+16.20% | +14.31%+17.99% | n/a+61.36% | n/a+54.04% |
| Flows | SEIS PRFZ | +$19M+$2M | +$54M-$40M | +$149M-$256M | +$203M-$273M | --$407M | --$234M |
Volatility and drawdown
| 3M | 1Y | 3Y | 5Y | ||
|---|---|---|---|---|---|
| Volatility | SEIS PRFZ | +14.98%+14.13% | +18.80%+17.45% | n/a+20.29% | n/a+21.14% |
| Max drawdown | SEIS PRFZ | -5.61%-6.52% | -11.33%-10.44% | n/a-26.51% | n/a-26.51% |
| Max drawdown duration | SEIS PRFZ | 29d30d | 84d84d | n/a283d | n/a283d |
Trading data
SEIS | PRFZ | |
Last sale 9/16/2026 at 2:10 PM | $31.72 | $53.25 |
| Previous close 09/15/2026 | $31.46 | $53.15 |
| Consolidated volume 09/15/2026 | ||
| 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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SEIS
is actively managed and doesn’t replicate an indexSEIS | PRFZ | |
|---|---|---|
| Tracking error | ||
| Tracking difference | ||
| 1 year cumulative return difference | ||
| Best | ||
| Worst | ||
| Daily return difference | ||
| Average | ||
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Main metrics
Last update 9/16/2026 at 2:10 PM
Live
Closed
SEIS | PRFZ | |
|---|---|---|
| Last price | $31.72 | $53.25 |
| 1D performance | +0.84% | +0.19% |
| AuM | $591.92 M | $2.73 B |
| E/R | 0.55% | 0.36% |
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Exposure
Countries
SEIS
USA
93.16%
Other
6.84%
PRFZ
USA
97.66%
Other
2.34%
Sectors
SEIS
Finance
23.17%
Healthcare
16.35%
Technology
13.55%
Industrials
12.88%
Consumer Cyclical.
9.01%
Other
25.04%
PRFZ
Finance
23.63%
Healthcare
17.84%
Technology
16.07%
Industrials
10.34%
Other
32.12%
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Diversification
SEIS
Total weight of top 15 holdings out of 15
15.19%
PRFZ
Total weight of top 15 holdings out of 15
5.25%
Top 15 holdings
Data as of July 31, 2026
SEIS
Enova International, Inc.
1.54%
CNO Financial Group, Inc.
1.29%
Terex Corp.
1.16%
Brinker International, Inc.
1.14%
Urban Outfitters, Inc.
1.01%
Watts Water Technologies, Inc.
1.01%
Zurn Elkay Water Solutions Corp.
0.98%
Commercial Metals Co.
0.94%
Jackson Financial, Inc.
0.93%
Abercrombie & Fitch Co.
0.92%
Clear Secure, Inc.
0.92%
ExlService Holdings, Inc.
0.86%
Federal Signal Corp.
0.85%
Old National Bancorp
0.84%
Apple Hospitality REIT, Inc.
0.81%
PRFZ
Par Pacific Holdings, Inc.
0.44%
Roivant Sciences Ltd.
0.40%
ATI, Inc.
0.40%
Revolution Medicines, Inc.
0.39%
Iridium Communications, Inc.
0.36%
SharkNinja, Inc.
0.34%
Carpenter Technology Corp.
0.34%
Enova International, Inc.
0.34%
Bio-Techne Corp.
0.34%
Crescent Energy Co.
0.32%
10X Genomics, Inc.
0.32%
TTM Technologies, Inc.
0.31%
The GEO Group, Inc.
0.31%
UMB Financial Corp.
0.30%
Compass, Inc. (New York)
0.30%
Frequently asked questions about SEIS and PRFZ
How have the SEIS and PRFZ ETFs performed in 2026?
As of September 14, 2026, SEIS is up 14.11% year-to-date (YTD), while PRFZ has returned 16.2%. That puts PRFZ better performer ahead so far this year.
Which ETF is attracting more investor money: SEIS or PRFZ?
Year-to-date, the SEIS ETF saw +$149M in flows, compared to -$256M for PRFZ.
Which ETF is more volatile: SEIS or PRFZ?
Over the past year, SEIS had a volatility of 18.8%, while PRFZ experienced 17.45%.
Which ETF is bigger: SEIS or PRFZ?
As of September 14, 2026, SEIS holds $591.92 M in assets under management (AUM), while PRFZ manages $2.73 B.
What sectors do the SEIS and PRFZ ETFs invest in?
SEIS leans toward sectors like Finance, Healthcare and Technology. Meanwhile, PRFZ focuses on Finance, Healthcare and Technology.
What are the top holdings of the SEIS ETF and PRFZ ETF?
SEIS top holdings include Enova International, Inc., CNO Financial Group, Inc. and Terex Corp.. PRFZ holds in its top three: Par Pacific Holdings, Inc., Roivant Sciences Ltd. and ATI, Inc..
Which ETF is more diversified: SEIS or PRFZ?
SEIS holds 372 securities with 15.19% of its assets in the top 15. PRFZ has 1500 securities and a top 15 weight of 5.25%.
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