Observatory · observe first
ResMed|
RMD · United States · Health Care Equipment · matched S&P 500 member. Follow its market-weight contribution.
Historical time machine
Historical observation
20182026
Universe weight
0.051%
12M weight contribution
-0.025 pp
3M weight contribution
-0.022 pp
12M price return
+10.7%
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 | $37.3bn | 0.051% | -0.025 pp | +10.7% | No |
| Jan 2026 | $37.6bn | 0.072% | -0.005 pp | +10.3% | No |
| Dec 2025 | $35.2bn | 0.069% | -0.007 pp | +6.3% | No |
| Nov 2025 | $37.3bn | 0.073% | -0.007 pp | +3.7% | No |
| Oct 2025 | $36.0bn | 0.071% | -0.013 pp | +2.7% | No |
| Sep 2025 | $40.1bn | 0.080% | -0.003 pp | +13.1% | No |
| Aug 2025 | $40.2bn | 0.083% | -0.004 pp | +13.0% | Yes |
| Jul 2025 | $39.9bn | 0.084% | +0.028 pp | +28.7% | Yes |
| Jun 2025 | $37.8bn | 0.082% | +0.029 pp | +36.0% | Yes |
| May 2025 | $35.9bn | 0.081% | +0.023 pp | +19.7% | Yes |
| Apr 2025 | $34.7bn | 0.083% | -0.008 pp | +11.6% | Yes |
| Mar 2025 | $32.9bn | 0.078% | -0.003 pp | +14.1% | No |
| Feb 2025 | $34.3bn | 0.077% | +0.003 pp | +35.6% | No |
| Jan 2025 | $34.7bn | 0.077% | -0.006 pp | +25.3% | No |
| Dec 2024 | $33.6bn | 0.076% | +0.001 pp | +34.2% | No |
| Nov 2024 | $36.6bn | 0.081% | +0.008 pp | +59.4% | Yes |
| Oct 2024 | $35.6bn | 0.084% | +0.013 pp | +73.5% | Yes |
| Sep 2024 | $35.9bn | 0.083% | +0.011 pp | +66.8% | Yes |
| Aug 2024 | $36.0bn | 0.087% | +0.012 pp | +55.1% | Yes |
| Jul 2024 | $31.3bn | 0.056% | -0.015 pp | -3.1% | No |
| Jun 2024 | $28.1bn | 0.053% | -0.022 pp | -11.5% | No |
| May 2024 | $30.3bn | 0.058% | -0.019 pp | -1.1% | No |
| Apr 2024 | $31.4bn | 0.091% | -0.029 pp | -10.3% | Yes |
| Mar 2024 | $29.1bn | 0.081% | -0.029 pp | -8.6% | 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.