Keep tabs on your favorite ETFs with a personalized weekly tracker. Create a Watchlist now →
RESMvsIWMETF Comparison
Columbia Research Enhanced Small Cap ETF (RESM) belongs to the US Multi-Factor segment. iShares Russell 2000 ETF (IWM) is part of the US Small Cap segment. RESM's top 3 sector exposures are Industrials, Financials and Information Technology. In contrast, IWM's top sector exposures are Industrials, Financials and Health Care. RESM is more expensive with a Total Expense Ratio (TER) of 0.32%, versus 0.19% for IWM. RESM is up 3.46% year-to-date (YTD) with -$2M in YTD flows. IWM performs worse with 2.64% YTD performance, and -$4.72B in YTD flows. Run a side-by-side ETF comparison of RESM and IWM below, and assess how they stack up in performance, liquidity, risk, exposure, holdings, and more, helping you select the best ETF for your investments.
RESM vs IWM performance and flow charts
Performance
Cumulative Flows
| 1M | 3M | YTD | 1Y | 3Y | 5Y | ||
|---|---|---|---|---|---|---|---|
| Perf. | RESM IWM | -4.38%-4.63% | +1.19%-1.57% | +3.46%+2.64% | n/a+27.20% | n/a+51.49% | n/a+15.67% |
| Flows | RESM IWM | -$2M-$2.78B | +$3M-$1.82B | -$2M-$4.72B | --$7.32B | --$267M | --$6.08B |
| 3M | 1Y | 3Y | 5Y | ||
|---|---|---|---|---|---|
| Volatility | RESM IWM | +16.04%+18.44% | n/a+23.10% | n/a+21.19% | n/a+22.66% |
| Max drawdown | RESM IWM | -5.45%-6.99% | n/a-16.45% | n/a-27.52% | n/a-31.96% |
| Max drawdown duration | RESM IWM | 12d48d | n/a52d | n/a289d | n/a1093d |
RESM | IWM | |
Last sale 3/11/2026 at 7:34 PM | $20.46 | $248.33 |
| Previous close 03/11/2026 | $20.56 | $252.85 |
| Consolidated volume 03/11/2026 | ||
| Average volume 30 days | ||
| Average discount or premium 30 days | ||
| Average Bid/Ask spread 30 days |
Create an account to view replication metrics
RESM | IWM | |
|---|---|---|
| Tracking error | ||
| Tracking difference | ||
| 1 year cumulative return difference | ||
| Best | ||
| Worst | ||
| Daily return difference | ||
| Average | ||
| Worst | ||
RESM | IWM | |
|---|---|---|
| Last price | $20.46 | $248.33 |
| 1D performance | -0.50% | -1.79% |
| AuM | $3.09 M | $71.06 B |
| E/R | 0.32% | 0.19% |
RESM | IWM | |
|---|---|---|
| Management strategy | Active | Passive |
| Provider | Columbia Threadneedle Investments | iShares |
| Benchmark | - | Russell 2000 Index |
| N° of holdings | 864 | 1635 |
| Asset class | - | Equities |
| Trailing 12m distribution yield | Join | Join |
| Inception date | December 11, 2025 | May 22, 2000 |
| 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 RESM and IWM ETFs performed in 2026?
As of March 10, 2026, RESM is up 3.46% year-to-date (YTD), while IWM has returned 2.64%. That puts RESM better performer ahead so far this year.
Which ETF is attracting more investor money: RESM or IWM?
Year-to-date, the RESM ETF saw -$2M in flows, compared to -$4.72B for IWM.
Which ETF is bigger: RESM or IWM?
As of March 10, 2026, RESM holds $3.09 M in assets under management (AUM), while IWM manages $71.06 B.
What sectors do the RESM and IWM ETFs invest in?
RESM leans toward sectors like Industrials, Financials and Information Technology. Meanwhile, IWM focuses on Industrials, Financials and Health Care.
What are the top holdings of the RESM ETF and IWM ETF?
RESM top holdings include FABRINET, LEXINGTON REIT and HECLA MINING. IWM holds in its top three: BLOOM ENERGY CORP, CREDO TECHNOLOGY GROUP HOLDING and KRATOS DEFENSE AND SECURITY SOLS.
Which ETF is more diversified: RESM or IWM?
RESM holds 879 securities with 8.1% of its assets in the top 15. IWM has 1942 securities and a top 15 weight of 7.78%.
MoneyShow Chart of the Day 6/27/25: Big Tech is SO Back. Again.
Have you tried our ETF Compare tool?
Compare ETFs like a pro. Analyze fees, performance, exposure & holdings side-by-side.