IWM

IWM is the iShares Russell 2000 ETF, a fund that pools investor money to buy small stakes in roughly 2,000 small US companies at once, tracking the Russell 2000 index. Instead of betting on one business, owning IWM spreads money across small-cap companies from many industries, including regional banks, small manufacturers, and retailers. BlackRock runs the fund for a small yearly fee and doesn't pick winners, it simply mirrors the index.