The post Forget SPY. iShares Runs the Same S&P 500 for a Third of the Fee appeared first on 24/7 Wall St.. If you own SPDR S&P 500 ETF Trust (NYSEARCA:SPY), you own the most heavily traded fund on the planet, launched in 1993 and holding $784.56 billion in assets. SPY delivers exactly what it promises: clean, liquid exposure to the 500 largest US companies, tight bid-ask spreads, and the deepest options market anywhere. The case for holding SPY …