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SEISvsRESMETF Comparison
SEI Select Small Cap ETF (SEIS) belongs to the US Small Cap segment. Columbia Research Enhanced Small Cap ETF (RESM) is part of the US Multi-Factor segment. SEIS's top 3 sector exposures are Financials, Industrials and Information Technology. In contrast, RESM's top sector exposures are Industrials, Financials and Information Technology. SEIS is more expensive with a Total Expense Ratio (TER) of 0.55%, versus 0.32% for RESM. SEIS is up 0.14% year-to-date (YTD) with +$35M in YTD flows. RESM performs better with 3.12% YTD performance, and -$2M in YTD flows. Run a side-by-side ETF comparison of SEIS and RESM below, and assess how they stack up in performance, liquidity, risk, exposure, holdings, and more, helping you select the best ETF for your investments.
SEIS vs RESM performance and flow charts
Performance
Cumulative Flows
| 1M | 3M | YTD | 1Y | 3Y | 5Y | ||
|---|---|---|---|---|---|---|---|
| Perf. | SEIS RESM | -5.83%-4.62% | -3.58%+0.86% | +0.14%+3.12% | +20.11%n/a | n/an/a | n/an/a |
| Flows | SEIS RESM | +$16M-$2M | +$45M+$3M | +$35M-$2M | +$157M- | -- | -- |
| 3M | 1Y | 3Y | 5Y | ||
|---|---|---|---|---|---|
| Volatility | SEIS RESM | +18.31%+15.92% | +22.74%n/a | n/an/a | n/an/a |
| Max drawdown | SEIS RESM | -7.41%-5.45% | -14.92%n/a | n/an/a | n/an/a |
| Max drawdown duration | SEIS RESM | 48d13d | 46dn/a | n/an/a | n/an/a |
SEIS | RESM | |
Last sale 3/13/2026 at 1:30 PM | $27.28 | $20.06 |
| Previous close 03/12/2026 | $27.34 | $20.08 |
| Consolidated volume 03/12/2026 | ||
| Average volume 30 days | ||
| Average discount or premium 30 days | ||
| Average Bid/Ask spread 30 days |
SEIS | RESM | |
|---|---|---|
| Last price | $27.28 | $20.06 |
| 1D performance | -0.21% | -0.13% |
| AuM | $418.70 M | $3.08 M |
| E/R | 0.55% | 0.32% |
SEIS | RESM | |
|---|---|---|
| Management strategy | Active | Active |
| Provider | SEI | Columbia Threadneedle Investments |
| Benchmark | - | - |
| N° of holdings | 307 | 864 |
| Asset class | - | - |
| Trailing 12m distribution yield | Join | Join |
| Inception date | October 9, 2024 | December 11, 2025 |
| ESG | No | No |
Countries
Sectors
Diversification
Total weight of top 15 holdings out of 15
Total weight of top 15 holdings out of 15
Top 15 holdings
How have the SEIS and RESM ETFs performed in 2026?
As of March 11, 2026, SEIS is up 0.14% year-to-date (YTD), while RESM has returned 3.12%. That puts RESM better performer ahead so far this year.
Which ETF is attracting more investor money: SEIS or RESM?
Year-to-date, the SEIS ETF saw +$35M in flows, compared to -$2M for RESM.
Which ETF is bigger: SEIS or RESM?
As of March 11, 2026, SEIS holds $418.70 M in assets under management (AUM), while RESM manages $3.08 M.
What sectors do the SEIS and RESM ETFs invest in?
SEIS leans toward sectors like Financials, Industrials and Information Technology. Meanwhile, RESM focuses on Industrials, Financials and Information Technology.
What are the top holdings of the SEIS ETF and RESM ETF?
SEIS top holdings include CNO FINANCIAL GROUP, EXLSERVICE HOLDINGS and COMMERCIAL METALS. RESM holds in its top three: FABRINET, LEXINGTON REIT and RAMBUS.
Which ETF is more diversified: SEIS or RESM?
SEIS holds 312 securities with 16.07% of its assets in the top 15. RESM has 879 securities and a top 15 weight of 8.1%.
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