In case investors don't already know it, the S&P 500's recent returns have been driven by the outperformance of large cap tech stocks Facebook, Amazon, Google, Apple and Microsoft, which we'll call FAGAM. Investors can capture the outperformance of FAGAM with an S&P 500 ETF from StateStreet (NYSEARCA:SPY), iShares (NYSEARCA:IVV) or Vanguard (NYSEARCA:VOO).