IDXX vs ZTS: which was the better investment?
IDEXX Laboratories, Inc. against Zoetis Inc. on real daily total-return data — every dividend reinvested, from Feb 1, 2013 to Jul 15, 2026.
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Frequently asked questions
Did IDXX beat ZTS?
Yes — measured from Feb 1, 2013 to Jul 15, 2026 with dividends reinvested, IDXX came out ahead: $118,891 versus $27,318 from a $10,000 start. That gap compounds from a 20.2% annual return against 7.8%.
What would $10,000 in IDXX be worth today?
$10,000 invested in IDEXX Laboratories, Inc. (IDXX) on Feb 1, 2013 would be worth about $118,891 as of Jul 15, 2026, a total return of 1088.9% (20.2% per year). The same $10,000 in ZTS would be worth $27,318.
Which was riskier — IDXX or ZTS?
IDXX swung with an annualized volatility of 31.1% and a worst peak-to-trough drop of -54.0%; ZTS ran at 26.5% volatility with a -69.5% maximum drawdown. Risk-adjusted (Sharpe ratio), that is 0.59 for IDXX vs 0.22 for ZTS.
What data is this comparison based on?
Daily adjusted closing prices covering Feb 1, 2013 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 IDXX vs ZTS. 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.