STT vs SPY: which was the better investment?
State Street Corporation against SPDR S&P 500 ETF Trust on real daily total-return data — every dividend reinvested, from Jan 29, 1993 to Aug 28, 2026.
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Frequently asked questions
Did STT beat SPY?
It was effectively a tie over the full overlap period (Jan 29, 1993 to Aug 28, 2026): $10,000 grew to $313,186 in STT and $319,057 in SPY, a difference of under 2%.
What would $10,000 in STT be worth today?
$10,000 invested in State Street Corporation (STT) on Jan 29, 1993 would be worth about $313,186 as of Aug 28, 2026, a total return of 3031.9% (10.8% per year). The same $10,000 in SPY would be worth $319,057.
Which was riskier — STT or SPY?
STT swung with an annualized volatility of 38.7% and a worst peak-to-trough drop of -82.3%; SPY ran at 18.5% volatility with a -55.2% maximum drawdown. Risk-adjusted (Sharpe ratio), that is 0.23 for STT vs 0.48 for SPY.
What data is this comparison based on?
Daily adjusted closing prices covering Jan 29, 1993 through Aug 28, 2026 — the full period where both assets have price history. Adjusted prices include dividends and splits, so these are total returns. The page refreshes with new market data every day.
Can I change the dates, amounts, or add monthly investing?
Yes — the interactive tool on this page is pre-loaded with STT vs SPY. You can set any start and end date, change the starting amount, add monthly contributions, or build a multi-asset portfolio and compare it against any benchmark.