You would have purchased 0.083333 index units at ~$1,200 each.
Snapshot as of 2026-03-01. For live results, use the calculator.
If you had invested $100 in S&P 500 in 2005, when the price was approximately $1,200, you would have purchased 0.083333 index units. At today's price of approximately $5,600, that investment would be worth $467 — a 366.7% return over 21 years.