ProShares Short Russell2000(AMEX:RWM)

RWM provides a 1-day bet against the Russell 2000's index of 2,000 US small-cap firms. The underlying index specifically contains the 1001st through the 3000th securities of the Russell 3000, which covers approximately 10% of its total market capitalization. The fund may invest in securities across various sectors and industry groups without any bias. Selected securities are then weighted by market-cap. The fund uses both ETF and index swaps to achieve its inverse exposure. As a levered product with a 1x factor that resets daily, RWM is not a buy-and-hold investment, and should not be expected to provide inverse leverage return greater than one day period.