BRZU, as a levered product, is not a buy-and-hold ETF, it's a short-term tactical instrument. The fund invests in large- and mid-cap companies in Brazil. Like many levered funds, it delivers 2x exposure only for one day. Over longer periods, returns can vary significantly from 2x exposure to its underlying index, so it should not be expected to provide index leverage return greater than a one-day period. Prior to March 31, 2020, the fund provided 3x daily exposure to the same index.