Explore how sector focus and holdings concentration set these leveraged ETFs apart for risk-aware traders.The Direxion Daily S&P 500 Bull 3X Shares ETF (SPXL +2.61%) and the ProShares - Ultra QQQ ETF (QLD +2.61%) both offer amplified exposure to major U.S. stock indexes, but they differ meaningfully in sector focus, and holdings concentration.Both funds are designed for aggressive traders seeking daily leveraged returns, but SPXL targets triple the daily S&P 500 performance, while QLD aims for double the da ...