TZA offers (-3x) daily inverse exposure to US small-cap companies as defined by the Russell 2000. The underlying index specifically contains the 1001st through the 3000th securities pulled from the Russell 3000 index, 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 ETF and index swaps to get its inverse exposure. As a geared product with daily resets, TZA is designed as a short-term trading tool and not a long-term investment vehicle. As a result, long-term returns could materially differ from those of the underlying index due to daily compounding.