SNY vs GSK: which was the better investment?
Sanofi against GSK plc on real daily total-return data — every dividend reinvested, from Jul 1, 2002 to Jul 15, 2026.
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Daily total-return data — dividends reinvested. Monthly additions buy on the first trading day.
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Frequently asked questions
Did SNY beat GSK?
No — measured from Jul 1, 2002 to Jul 15, 2026 with dividends reinvested, GSK came out ahead: $37,292 versus $35,638 from a $10,000 start. That gap compounds from a 5.6% annual return against 5.4%.
What would $10,000 in SNY be worth today?
$10,000 invested in Sanofi (SNY) on Jul 1, 2002 would be worth about $35,638 as of Jul 15, 2026, a total return of 256.4% (5.4% per year). The same $10,000 in GSK would be worth $37,292.
Which was riskier — SNY or GSK?
SNY swung with an annualized volatility of 26.6% and a worst peak-to-trough drop of -46.7%; GSK ran at 22.4% volatility with a -49.6% maximum drawdown. Risk-adjusted (Sharpe ratio), that is 0.13 for SNY vs 0.16 for GSK.
What data is this comparison based on?
Daily adjusted closing prices covering Jul 1, 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 SNY vs GSK. 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.