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MainStay S&P 500 Index Fund Investor Class (MYSPX) is an exchange-traded fund (ETF) listed on the NASDAQ. It pays a current dividend yield of 0.72% ($0.59 per share annually (TTM)). The most recent ex-dividend date was December 8, 2025, with payment scheduled for December 8, 2025. market capitalization is approximately $2.12B. Review MYSPX dividend history on this scorecard, compare peers in the Compare Dividend Returns tool, or project income with the dividend calculator.