The S&P Global Composite PMI is a key economic indicator that reflects the health of the manufacturing and services sectors. A reading above 50 indicates expansion. The reported increase to 52.5 for February, which is higher than both the estimated 51.4 and the previous month's 52.0, suggests an acceleration in economic activity. This positive economic outlook can lead to increased investor confidence and potentially drive up the price of assets like the SPY ETF, which tracks the performance of the S&P 500.