iShares Russell 2000 ETF is a company in the U.S. stock market and it is a holding in 5 U.S.-traded ETFs. IWM has around 5.5M shares in the U.S. ETF market. The largest ETF holder of IWM is the Direxion Daily Small Cap Bull 3x Shares (TNA), with approximately 4.54M shares. Investors may also find of interest that the ETF with the largest allocation to IWM stock is Direxion Daily Small Cap Bull 3x Shares (TNA), with a portfolio weight of 64.19%. On average, U.S. ETFs allocate 26.04% of IWM to their portfolios.