ISRG vs PFE

A side-by-side look at ISRG and PFE, updated throughout the trading session.

ISRGISRG Open ISRG on Vela

PFEPFE Open PFE on Vela

Performance, normalized

Z-scored closes: both paths on one scale, price levels aside.

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ISRG vs PFE: how they differ

Intuitive Surgical, Inc. (ISRG) and Pfizer Inc. (PFE) are both in the Healthcare sector: ISRG is classified in Medical - Instruments & Supplies, PFE in Drug Manufacturers - General. ISRG trades on NASDAQ and PFE on NYSE.

ISRG trades about 2.8 million shares a day on average, against 38.6 million for PFE. ISRG has the higher beta (1.46 against 0.28 for PFE), meaning it has historically moved more with the broad market. PFE paid $1.72 per share in dividends over the trailing twelve months; ISRG does not currently pay one.

Figures as of October 25, 2026.

The chart Z-score-normalizes each closing series, computing (close − mean) ÷ standard deviation over the window, so both paths share one scale regardless of price level, and correlation is computed on daily returns. Figures update throughout the trading session. Nothing on this page is financial advice.