Observatory · observe first
Intuitive Surgical
ISRG · United States · Health Care Equipment · matched S&P 500 member. Follow its market-weight contribution.
Historical time machine
Historical observation
20182026
Universe weight
0.245%
12M weight contribution
-0.212 pp
3M weight contribution
-0.154 pp
12M price return
-12.2%
Share of matched S&P 500 members
Monthly observations through Feb 2026
Company price index
A separate dimension from market allocation
Historical observations
Most recent 24 observations at or before the selected month
| Month | Market cap | Universe weight | 12M weight change | 12M return | Above 6M weight average |
|---|---|---|---|---|---|
| Feb 2026 | $178.8bn | 0.245% | -0.212 pp | -12.2% | No |
| Jan 2026 | $178.7bn | 0.342% | -0.112 pp | -11.8% | No |
| Dec 2025 | $200.8bn | 0.393% | -0.028 pp | +8.5% | Yes |
| Nov 2025 | $203.3bn | 0.399% | -0.027 pp | +5.8% | Yes |
| Oct 2025 | $189.4bn | 0.371% | -0.051 pp | +6.0% | No |
| Sep 2025 | $160.3bn | 0.321% | -0.085 pp | -9.0% | No |
| Aug 2025 | $169.7bn | 0.352% | -0.071 pp | -3.9% | No |
| Jul 2025 | $172.5bn | 0.364% | +0.081 pp | +8.2% | No |
| Jun 2025 | $194.8bn | 0.420% | +0.124 pp | +22.2% | No |
| May 2025 | $198.0bn | 0.449% | +0.176 pp | +37.4% | Yes |
| Apr 2025 | $184.9bn | 0.444% | +0.063 pp | +39.2% | Yes |
| Mar 2025 | $176.6bn | 0.419% | +0.029 pp | +24.1% | No |
| Feb 2025 | $204.4bn | 0.457% | +0.068 pp | +48.6% | Yes |
| Jan 2025 | $204.0bn | 0.454% | +0.057 pp | +51.2% | Yes |
| Dec 2024 | $185.9bn | 0.422% | +0.067 pp | +54.7% | Yes |
| Nov 2024 | $193.0bn | 0.426% | +0.085 pp | +74.4% | Yes |
| Oct 2024 | $179.5bn | 0.422% | +0.108 pp | +92.1% | Yes |
| Sep 2024 | $174.6bn | 0.406% | +0.063 pp | +68.1% | Yes |
| Aug 2024 | $175.1bn | 0.423% | +0.073 pp | +57.6% | Yes |
| Jul 2024 | $158.0bn | 0.283% | +0.035 pp | +37.1% | No |
| Jun 2024 | $157.8bn | 0.296% | +0.019 pp | +30.1% | No |
| May 2024 | $142.6bn | 0.273% | +0.006 pp | +30.6% | No |
| Apr 2024 | $131.5bn | 0.381% | +0.024 pp | +23.0% | Yes |
| Mar 2024 | $140.6bn | 0.390% | +0.085 pp | +56.2% | Yes |
Its weight is estimated market cap divided by the total estimated market cap of matched S&P 500 members for the month. This is not an official float-adjusted S&P index weight.