SPY - CLM: 18% Monthly Yield Not For Sustainable Income Investors July, 11 2025 09:15 AM SPDR S&P 500 ETF Trust 2025-07-11 09:15:00 ET Cornerstone Strategic Investment Fund ( CLM ) is a well-known closed-end fund with a long history dating back to 1987.... For further details see: CLM: 18% Monthly Yield Not For Sustainable Income Investors