BKSEvsSEISETF Comparison
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BNY Mellon US Small Cap Core Equity ETF (BKSE) and SEI Select Small Cap ETF (SEIS) belong to the same industry segment: US Small Cap. BKSE's top 3 sector exposures are Finance, Technology and Industrials. In contrast, SEIS's top sector exposures are Finance, Healthcare and Technology. BKSE is less expensive with a Total Expense Ratio (TER) of 0.04%, versus 0.55% for SEIS. BKSE is up 15.22% year-to-date (YTD) with +$14M in YTD flows. SEIS performs worse with 13.72% YTD performance, and +$180M in YTD flows. Run a side-by-side ETF comparison of BKSE and SEIS 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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BKSE vs SEIS performance and flow charts
Performance
Cumulative Flows
Historic performance and flows
Data as of 10/30/2026
| 1M | 3M | YTD | 1Y | 3Y | 5Y | ||
|---|---|---|---|---|---|---|---|
| Perf. | BKSE SEIS | +3.44%+1.90% | -2.94%-2.09% | +15.22%+13.72% | +17.99%+16.34% | +77.35%n/a | +37.88%n/a |
| Flows | BKSE SEIS | -$3M+$16M | -$2M+$57M | +$14M+$180M | +$14M+$210M | -$57M- | -$110M- |
Volatility and drawdown
| 3M | 1Y | 3Y | 5Y | ||
|---|---|---|---|---|---|
| Volatility | BKSE SEIS | +12.77%+13.74% | +15.88%+18.05% | +19.70%n/a | +21.46%n/a |
| Max drawdown | BKSE SEIS | -9.99%-7.96% | -9.99%-11.33% | -26.53%n/a | -29.19%n/a |
| Max drawdown duration | BKSE SEIS | 75d75d | 75d84d | 289dn/a | 980dn/a |
Trading data
BKSE | SEIS | |
Last sale 10/30/2026 at 1:30 PM | $42.73 | $31.67 |
| Previous close 10/29/2026 | $43.31 | $32.19 |
| 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 October 30, 2026
1-year trailing difference
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SEIS
is actively managed and doesn’t replicate an indexBKSE | SEIS | |
|---|---|---|
| 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
BKSE | SEIS | |
|---|---|---|
| Last price | $42.73 | $31.67 |
| 1D performance | -1.33% | -1.62% |
| AuM | $82.78 M | $620.42 M |
| E/R | 0.04% | 0.55% |
Characteristics
BKSE | SEIS | |
|---|---|---|
| Management strategy | Passive | Active |
| Provider | BNY Mellon | SEI |
| Benchmark | Solactive GBS United States 600 Index | - |
| N° of holdings | 590 | 368 |
| Asset class | Equities | - |
| Trailing 12m distribution yield | Join | Join |
| Inception date | April 7, 2020 | October 9, 2024 |
| ESG | No | No |
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Exposure
Countries
BKSE
USA
95.18%
Other
4.82%
SEIS
USA
92.34%
Other
7.66%
Sectors
BKSE
Finance
24.77%
Technology
14.31%
Industrials
11.79%
Healthcare
11.69%
Consumer Cyclical.
8.13%
Other
29.3%
SEIS
Finance
21.8%
Healthcare
17.73%
Technology
13.97%
Industrials
13.02%
Consumer Cyclical.
8.97%
Other
24.5%
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Diversification
BKSE
Total weight of top 15 holdings out of 15
5.62%
SEIS
Total weight of top 15 holdings out of 15
14.73%
Top 15 holdings
Data as of September 30, 2026
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%
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%
Frequently asked questions about BKSE and SEIS
How have the BKSE and SEIS ETFs performed in 2026?
As of October 30, 2026, BKSE is up 15.22% year-to-date (YTD), while SEIS has returned 13.72%. That puts BKSE better performer ahead so far this year.
Which ETF is attracting more investor money: BKSE or SEIS?
Year-to-date, the BKSE ETF saw +$14M in flows, compared to +$180M for SEIS.
Which ETF is more volatile: BKSE or SEIS?
Over the past year, BKSE had a volatility of 15.88%, while SEIS experienced 18.05%.
Which ETF is bigger: BKSE or SEIS?
As of October 30, 2026, BKSE holds $82.78 M in assets under management (AUM), while SEIS manages $620.42 M.
What sectors do the BKSE and SEIS ETFs invest in?
BKSE leans toward sectors like Finance, Technology and Industrials. Meanwhile, SEIS focuses on Finance, Healthcare and Technology.
What are the top holdings of the BKSE ETF and SEIS ETF?
BKSE top holdings include Twist Bioscience Corp., Avantor, Inc. and 10X Genomics, Inc.. SEIS holds in its top three: CNO Financial Group, Inc., Abercrombie & Fitch Co. and Urban Outfitters, Inc..
Which ETF is more diversified: BKSE or SEIS?
BKSE holds 594 securities with 5.62% of its assets in the top 15. SEIS has 369 securities and a top 15 weight of 14.73%.
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