Quick ReadSPYM charges 0.02% versus VOO's 0.03%, delivering identical S&P 500 exposure at the lowest cost among Trump Account-eligible funds. The Vanguard S&P 500 ETF (NYSEARCA:VOO) is the fund most retail investors reach for when they want the S&P 500 in one ticker. Why VOO Became the DefaultAt a 0.03% expense ratio, VOO delivers tight tracking of the S&P 500 and carries the weight of Vanguard's brand recognition. The iShares Core S&P 500 ETF (NYSEARCA:IVV) is the near-clone of BlackRock, with an identical 0.03% expense ratio and a 19.59% one-year return. Both fit inside the Trump Account fee cap with room to spare.