SPY vs SPLG: Two Approaches to S&P 500 Ownership

The SPDR Portfolio S&P 500 ETF (SPLG) and the SPDR S&P 500 ETF Trust (SPY) are two popular ETFs that track the S&P 500 Index. SPLG has a lower expense ratio of 0.02% compared to SPY's 0.09%, while SPY has over $695 billion in assets under management and is the most liquid ETF. Both funds offer identical returns and hold nearly identical portfolios, making the main differences come down to cost and trading convenience.