Observatory · observe first
Idexx Laboratories
IDXX · United States · Health Care Equipment · matched S&P 500 member. Follow its market-weight contribution.
Historical time machine
Historical observation
20182026
Universe weight
0.073%
12M weight contribution
-0.034 pp
3M weight contribution
-0.004 pp
12M price return
-14.0%
Share of matched S&P 500 members
Monthly observations through Aug 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 |
|---|---|---|---|---|---|
| Aug 2026 | $43.9bn | 0.073% | -0.034 pp | -14.0% | Yes |
| Jul 2026 | $44.1bn | 0.077% | -0.014 pp | +4.6% | Yes |
| Jun 2026 | $41.5bn | 0.072% | -0.021 pp | -1.8% | No |
| May 2026 | $44.5bn | 0.077% | -0.017 pp | +9.8% | No |
| Apr 2026 | $44.7bn | 0.061% | -0.024 pp | +29.6% | No |
| Mar 2026 | $44.7bn | 0.065% | -0.016 pp | +33.8% | No |
| Feb 2026 | $52.3bn | 0.072% | -0.008 pp | +50.2% | No |
| Jan 2026 | $53.5bn | 0.102% | +0.026 pp | +58.9% | No |
| Dec 2025 | $54.0bn | 0.106% | +0.029 pp | +63.6% | Yes |
| Nov 2025 | $60.1bn | 0.118% | +0.042 pp | +78.5% | Yes |
| Oct 2025 | $50.4bn | 0.099% | +0.020 pp | +54.7% | Yes |
| Sep 2025 | $51.1bn | 0.102% | +0.006 pp | +26.5% | Yes |
| Aug 2025 | $51.8bn | 0.107% | +0.012 pp | +34.4% | Yes |
| Jul 2025 | $43.0bn | 0.091% | +0.020 pp | +12.2% | Yes |
| Jun 2025 | $43.1bn | 0.093% | +0.018 pp | +10.1% | Yes |
| May 2025 | $41.3bn | 0.094% | +0.015 pp | +3.3% | Yes |
| Apr 2025 | $35.2bn | 0.084% | -0.034 pp | -12.2% | Yes |
| Mar 2025 | $34.2bn | 0.081% | -0.043 pp | -22.2% | Yes |
| Feb 2025 | $35.5bn | 0.080% | -0.057 pp | -24.0% | No |
| Jan 2025 | $34.6bn | 0.077% | -0.050 pp | -18.1% | No |
| Dec 2024 | $33.9bn | 0.077% | -0.061 pp | -25.5% | No |
| Nov 2024 | $34.5bn | 0.076% | -0.044 pp | -9.5% | No |
| Oct 2024 | $33.3bn | 0.078% | -0.034 pp | +1.9% | No |
| Sep 2024 | $41.6bn | 0.097% | -0.024 pp | +15.5% | 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.