MainStay S&P 500 Index Fund Investor Class (MYSPX) NASDAQ
80.80
+0.11(+0.14%)
Currency In USD
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80.80
+0.11(+0.14%)
Currency In USD
If you invested $1000 in MainStay S&P 500 Index Fund Investor Class (MYSPX) 10 years ago, it would be worth $3,886.48 as of June 03, 2026, based on a reinvested dividends scenario. Over the same period, a $1000 investment made 5 years ago would be worth $1,826.81, while $1000 invested 1 year ago would be worth $1,280.71. This corresponds to total returns of 288.65%, 82.68%, 28.07%, respectively, with annualized returns of 14.53%, 12.8%, 28.07%.
Custom investment amounts or purchase dates can also be explored using the Stoculator calculator. Past performance does not guarantee future results.
Date Range:
| Date | Open | Close | Adj Close | High | Low | Volume |
|---|---|---|---|---|---|---|
| June 02, 2026 | 80.8 | 80.8 | 80.8 | 80.8 | 80.8 | 0 |
| June 01, 2026 | 80.48 | 80.48 | 80.48 | 80.48 | 80.48 | 0 |
| May 29, 2026 | 80.3 | 80.3 | 80.3 | 80.3 | 80.3 | 0 |
| May 28, 2026 | 79.84 | 79.84 | 79.84 | 79.84 | 79.84 | 0 |
| May 27, 2026 | 79.83 | 79.83 | 79.83 | 79.83 | 79.83 | 0 |
| May 26, 2026 | 79.35 | 79.35 | 79.35 | 79.35 | 79.35 | 0 |
| May 22, 2026 | 79.05 | 79.05 | 79.05 | 79.05 | 79.05 | 0 |
| May 21, 2026 | 78.91 | 78.91 | 78.91 | 78.91 | 78.91 | 0 |
| May 20, 2026 | 78.07 | 78.07 | 78.07 | 78.07 | 78.07 | 0 |
| May 19, 2026 | 78.59 | 78.59 | 78.59 | 78.59 | 78.59 | 0 |
| May 18, 2026 | 78.64 | 78.64 | 78.64 | 78.64 | 78.64 | 0 |
| May 15, 2026 | 79.61 | 79.61 | 79.61 | 79.61 | 79.61 | 0 |
| May 14, 2026 | 79.01 | 79.01 | 79.01 | 79.01 | 79.01 | 0 |
| May 13, 2026 | 78.55 | 78.55 | 78.55 | 78.55 | 78.55 | 0 |
| May 12, 2026 | 78.55 | 78.55 | 78.55 | 78.55 | 78.55 | 0 |
| May 11, 2026 | 78.52 | 78.52 | 78.52 | 78.52 | 78.52 | 0 |
| May 08, 2026 | 77.86 | 77.86 | 77.86 | 77.86 | 77.86 | 0 |
| May 07, 2026 | 78.16 | 78.16 | 78.16 | 78.16 | 78.16 | 0 |
| May 06, 2026 | 78.16 | 78.16 | 78.16 | 78.16 | 78.16 | 0 |
| May 05, 2026 | 77.04 | 77.04 | 77.04 | 77.04 | 77.04 | 0 |
| May 04, 2026 | 76.73 | 76.73 | 76.73 | 76.73 | 76.73 | 0 |
| May 01, 2026 | 76.5 | 76.5 | 76.5 | 76.5 | 76.5 | 0 |
| April 30, 2026 | 75.73 | 75.73 | 75.73 | 75.73 | 75.73 | 0 |
| April 29, 2026 | 75.76 | 75.76 | 75.76 | 75.76 | 75.76 | 0 |
| April 28, 2026 | 76.13 | 76.13 | 76.13 | 76.13 | 76.13 | 0 |
| April 27, 2026 | 76.13 | 76.13 | 76.13 | 76.13 | 76.13 | 0 |
| April 24, 2026 | 75.44 | 75.44 | 75.44 | 75.44 | 75.44 | 0 |
| April 23, 2026 | 75.75 | 75.75 | 75.75 | 75.75 | 75.75 | 0 |
| April 22, 2026 | 75.75 | 75.75 | 75.75 | 75.75 | 75.75 | 0 |
| April 21, 2026 | 75.45 | 75.45 | 75.45 | 75.45 | 75.45 | 0 |
| April 20, 2026 | 75.63 | 75.63 | 75.63 | 75.63 | 75.63 | 0 |
| April 17, 2026 | 74.73 | 74.73 | 74.73 | 74.73 | 74.73 | 0 |
| April 16, 2026 | 74.54 | 74.54 | 74.54 | 74.54 | 74.54 | 0 |
| April 15, 2026 | 73.95 | 73.95 | 73.95 | 73.95 | 73.95 | 0 |
| April 14, 2026 | 73.08 | 73.08 | 73.08 | 73.08 | 73.08 | 0 |
| April 13, 2026 | 73.08 | 73.08 | 73.08 | 73.08 | 73.08 | 0 |
| April 10, 2026 | 72.43 | 72.43 | 72.43 | 72.43 | 72.43 | 0 |
| April 09, 2026 | 71.98 | 71.98 | 71.98 | 71.98 | 71.98 | 0 |
| April 08, 2026 | 70.22 | 70.22 | 70.22 | 70.22 | 70.22 | 0 |
| April 07, 2026 | 70.22 | 70.22 | 70.22 | 70.22 | 70.22 | 0 |
| April 06, 2026 | 69.86 | 69.86 | 70.17 | 69.86 | 69.86 | 0 |
| April 02, 2026 | 69.78 | 69.78 | 69.86 | 69.78 | 69.78 | 0 |
| April 01, 2026 | 69.28 | 69.28 | 69.78 | 69.28 | 69.28 | 0 |
| March 31, 2026 | 67.32 | 67.32 | 69.28 | 67.32 | 67.32 | 0 |
| March 30, 2026 | 67.59 | 67.59 | 67.32 | 67.59 | 67.59 | 0 |
| March 27, 2026 | 68.74 | 68.74 | 67.59 | 68.74 | 68.74 | 0 |
| March 26, 2026 | 69.95 | 69.95 | 68.74 | 69.95 | 69.95 | 0 |
| March 25, 2026 | 69.58 | 69.58 | 69.95 | 69.58 | 69.58 | 0 |
| March 24, 2026 | 69.84 | 69.84 | 69.58 | 69.84 | 69.84 | 0 |
| March 23, 2026 | 69.05 | 69.05 | 69.84 | 69.05 | 69.05 | 0 |
| March 20, 2026 | 70.11 | 70.11 | 69.05 | 70.11 | 70.11 | 0 |
| March 19, 2026 | 70.3 | 70.3 | 70.11 | 70.3 | 70.3 | 0 |
| March 18, 2026 | 71.27 | 71.27 | 70.3 | 71.27 | 71.27 | 0 |
| March 17, 2026 | 71.09 | 71.09 | 71.27 | 71.09 | 71.09 | 0 |
| March 16, 2026 | 70.37 | 70.37 | 71.09 | 70.37 | 70.37 | 0 |
| March 13, 2026 | 70.8 | 70.8 | 70.37 | 70.8 | 70.8 | 0 |
| March 12, 2026 | 71.89 | 71.89 | 70.8 | 71.89 | 71.89 | 0 |
| March 11, 2026 | 71.95 | 71.95 | 71.89 | 71.95 | 71.95 | 0 |
| March 10, 2026 | 72.09 | 72.09 | 71.95 | 72.09 | 72.09 | 0 |
| March 09, 2026 | 72.09 | 72.09 | 72.09 | 72.09 | 72.09 | 0 |