XLI: U.S. industrials sector offers access to transportation firms, commercial and professional services, and manufacturers of capital goods. Given the sector-specific focus, XLI likely doesn’t deserve a core allocation, but may be useful as a means of implementing a tactical tilt towards the industrials sector for a sector rotation strategy. The primary appeal of XLI lies in the impressive liquidity; used widely as a trading vehicle by active investors, XLI will generally feature very narrow bid-ask spreads. The depth of the XLI portfolio, however, leaves something to be desired. This ETF has far fewer holdings than options such as VIS, FIL, and IYJ, and also maintains a big weighting in GE.