SEISvsBKSEETF Comparison
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SEI Select Small Cap ETF (SEIS) and BNY Mellon US Small Cap Core Equity ETF (BKSE) belong to the same industry segment: US Small Cap. SEIS's top 3 sector exposures are Finance, Healthcare and Technology. In contrast, BKSE's top sector exposures are Finance, Technology and Industrials. SEIS is more expensive with a Total Expense Ratio (TER) of 0.55%, versus 0.04% for BKSE. SEIS is up 15.55% year-to-date (YTD) with +$180M in YTD flows. BKSE performs better with 16.78% YTD performance, and +$14M in YTD flows. Run a side-by-side ETF comparison of SEIS and BKSE 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 BKSE performance and flow charts
Performance
Cumulative Flows
Historic performance and flows
Data as of 10/29/2026
| 1M | 3M | YTD | 1Y | 3Y | 5Y | ||
|---|---|---|---|---|---|---|---|
| Perf. | SEIS BKSE | +3.34%+4.27% | +0.47%-0.82% | +15.55%+16.78% | +16.63%+18.48% | n/a+79.75% | n/a+43.11% |
| Flows | SEIS BKSE | +$18M-$3M | +$57M-$2M | +$180M+$14M | +$211M+$14M | --$57M | --$110M |
Volatility and drawdown
| 3M | 1Y | 3Y | 5Y | ||
|---|---|---|---|---|---|
| Volatility | SEIS BKSE | +13.53%+12.61% | +18.03%+15.85% | n/a+19.70% | n/a+21.47% |
| Max drawdown | SEIS BKSE | -7.96%-9.99% | -11.33%-9.99% | n/a-26.53% | n/a-29.19% |
| Max drawdown duration | SEIS BKSE | 74d74d | 84d74d | n/a289d | n/a980d |
Trading data
SEIS | BKSE | |
Last sale 10/30/2026 at 1:30 PM | $31.67 | $42.73 |
| Previous close 10/29/2026 | $32.19 | $43.31 |
| Consolidated volume 10/29/2026 | ||
| Average volume 30 days | ||
| Average discount or premium 30 days | ||
| Average Bid/Ask spread 30 days |
Replication quality
Data as of September 30, 2026
1-year trailing difference
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SEIS
is actively managed and doesn’t replicate an indexSEIS | BKSE | |
|---|---|---|
| Tracking error | ||
| Tracking difference | ||
| 1 year cumulative return difference | ||
| Best | ||
| Worst | ||
| Daily return difference | ||
| Average | ||
| Worst | ||
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Main metrics
Last update 10/30/2026 at 1:30 PM
Live
Closed
SEIS | BKSE | |
|---|---|---|
| Last price | $31.67 | $42.73 |
| 1D performance | -1.62% | -1.32% |
| AuM | $630.24 M | $83.90 M |
| E/R | 0.55% | 0.04% |
Characteristics
SEIS | BKSE | |
|---|---|---|
| Management strategy | Active | Passive |
| Provider | SEI | BNY Mellon |
| Benchmark | - | Solactive GBS United States 600 Index |
| N° of holdings | 368 | 590 |
| Asset class | - | Equities |
| Trailing 12m distribution yield | Join | Join |
| Inception date | October 9, 2024 | April 7, 2020 |
| ESG | No | No |
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Exposure
Countries
SEIS
USA
92.34%
Other
7.66%
BKSE
USA
95.18%
Other
4.82%
Sectors
SEIS
Finance
21.8%
Healthcare
17.73%
Technology
13.97%
Industrials
13.02%
Consumer Cyclical.
8.97%
Other
24.5%
BKSE
Finance
24.77%
Technology
14.31%
Industrials
11.79%
Healthcare
11.69%
Consumer Cyclical.
8.13%
Other
29.3%
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Diversification
SEIS
Total weight of top 15 holdings out of 15
14.73%
BKSE
Total weight of top 15 holdings out of 15
5.62%
Top 15 holdings
Data as of September 30, 2026
SEIS
CNO Financial Group, Inc.
1.28%
Abercrombie & Fitch Co.
1.23%
Urban Outfitters, Inc.
1.07%
Watts Water Technologies, Inc.
1.06%
Terex Corp.
1.03%
Jackson Financial, Inc.
1.02%
Enova International, Inc.
0.98%
Zurn Elkay Water Solutions Corp.
0.93%
Hudbay Minerals, Inc.
0.91%
ExlService Holdings, Inc.
0.90%
CareDx, Inc.
0.89%
Commercial Metals Co.
0.88%
Diodes, Inc.
0.88%
Keysight Technologies, Inc.
0.85%
Apple Hospitality REIT, Inc.
0.82%
BKSE
Twist Bioscience Corp.
0.50%
Avantor, Inc.
0.46%
10X Genomics, Inc.
0.44%
Brinker International, Inc.
0.40%
Avnet, Inc.
0.38%
MaxLinear, Inc.
0.36%
GitLab, Inc.
0.36%
Ralliant Corp.
0.35%
Elastic NV
0.35%
Riot Platforms, Inc.
0.35%
The Hanover Insurance Group, Inc.
0.34%
SM Energy Co.
0.34%
Ryman Hospitality Properties, Inc.
0.34%
Silicon Laboratories, Inc.
0.33%
NOV, Inc.
0.33%
Frequently asked questions about SEIS and BKSE
How have the SEIS and BKSE ETFs performed in 2026?
As of October 29, 2026, SEIS is up 15.55% year-to-date (YTD), while BKSE has returned 16.78%. That puts BKSE better performer ahead so far this year.
Which ETF is attracting more investor money: SEIS or BKSE?
Year-to-date, the SEIS ETF saw +$180M in flows, compared to +$14M for BKSE.
Which ETF is more volatile: SEIS or BKSE?
Over the past year, SEIS had a volatility of 18.03%, while BKSE experienced 15.85%.
Which ETF is bigger: SEIS or BKSE?
As of October 29, 2026, SEIS holds $630.24 M in assets under management (AUM), while BKSE manages $83.90 M.
What sectors do the SEIS and BKSE ETFs invest in?
SEIS leans toward sectors like Finance, Healthcare and Technology. Meanwhile, BKSE focuses on Finance, Technology and Industrials.
What are the top holdings of the SEIS ETF and BKSE ETF?
SEIS top holdings include CNO Financial Group, Inc., Abercrombie & Fitch Co. and Urban Outfitters, Inc.. BKSE holds in its top three: Twist Bioscience Corp., Avantor, Inc. and 10X Genomics, Inc..
Which ETF is more diversified: SEIS or BKSE?
SEIS holds 369 securities with 14.73% of its assets in the top 15. BKSE has 594 securities and a top 15 weight of 5.62%.
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