Materials Select Sector SPDR Fund is a company in the U.S. stock market and it is a holding in 6 U.S.-traded ETFs. XLB has around 498.0K shares in the U.S. ETF market. The largest ETF holder of XLB is the ALPS Equal Sector Weight ETF (EQL), with approximately 231.31K shares. Investors may also find of interest that the ETF with the largest allocation to XLB stock is Arrow DWA Tactical Macro ETF (DWAT), with a portfolio weight of 9.41%. On average, U.S. ETFs allocate 5.60% of XLB to their portfolios.