STX vs DIA: which was the better investment?
Seagate Technology Holdings plc against SPDR Dow Jones Industrial Average ETF on real daily total-return data — every dividend reinvested, from Dec 11, 2002 to Jul 15, 2026.
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Frequently asked questions
Did STX beat DIA?
Yes — measured from Dec 11, 2002 to Jul 15, 2026 with dividends reinvested, STX came out ahead: $1,616,573 versus $102,907 from a $10,000 start. That gap compounds from a 24.1% annual return against 10.4%.
What would $10,000 in STX be worth today?
$10,000 invested in Seagate Technology Holdings plc (STX) on Dec 11, 2002 would be worth about $1,616,573 as of Jul 15, 2026, a total return of 16065.7% (24.1% per year). The same $10,000 in DIA would be worth $102,907.
Which was riskier — STX or DIA?
STX swung with an annualized volatility of 46.2% and a worst peak-to-trough drop of -88.7%; DIA ran at 17.7% volatility with a -51.9% maximum drawdown. Risk-adjusted (Sharpe ratio), that is 0.48 for STX vs 0.47 for DIA.
What data is this comparison based on?
Daily adjusted closing prices covering Dec 11, 2002 through Jul 15, 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 STX vs DIA. 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.