SPXL, as a levered product, is not a buy-and-hold ETF, it's a short-term tactical instrument for getting 3x exposure to the S&P 500. The fund gets the added exposure by using futures contracts and other derivatives. The underlying companies are among the biggest and most well-known in the world. Importantly, the implication of SPXL's daily rebalancing is that holding-period returns longer than a day are unlikely to resemble 3x exposure to the S&P 500. Shorter holding periods increase the importance of trading costs relative to yearly management costs, which are fairly high but average for this segment. Over longer periods, returns can vary significantly from 2x exposure to its underlying index
