Observatory · observe first
Microsoft
MSFT · United States · Systems Software · matched S&P 500 member. Follow its market-weight contribution.
Historical time machine
Historical observation
20182026
Universe weight
6.113%
12M weight contribution
-0.748 pp
3M weight contribution
-1.426 pp
12M price return
+4.4%
Share of matched S&P 500 members
Monthly observations through Jan 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 |
|---|---|---|---|---|---|
| Jan 2026 | $3195.2bn | 6.113% | -0.748 pp | +4.4% | No |
| Dec 2025 | $3594.4bn | 7.040% | -0.066 pp | +15.6% | No |
| Nov 2025 | $3656.8bn | 7.183% | +0.236 pp | +17.0% | No |
| Oct 2025 | $3848.6bn | 7.539% | +0.439 pp | +28.4% | No |
| Sep 2025 | $3850.0bn | 7.707% | +0.262 pp | +21.3% | No |
| Aug 2025 | $3766.3bn | 7.808% | +0.316 pp | +22.4% | Yes |
| Jul 2025 | $3965.6bn | 8.363% | +2.789 pp | +28.5% | Yes |
| Jun 2025 | $3697.0bn | 7.972% | +1.745 pp | +12.1% | Yes |
| May 2025 | $3421.7bn | 7.753% | +1.855 pp | +11.7% | Yes |
| Apr 2025 | $2937.8bn | 7.054% | -1.326 pp | +2.3% | Yes |
| Mar 2025 | $2790.6bn | 6.625% | -2.044 pp | -10.1% | No |
| Feb 2025 | $2951.2bn | 6.600% | -2.207 pp | -3.3% | No |
| Jan 2025 | $3085.6bn | 6.861% | -1.923 pp | +5.2% | No |
| Dec 2024 | $3133.8bn | 7.106% | -1.228 pp | +12.9% | Yes |
| Nov 2024 | $3148.4bn | 6.947% | -1.832 pp | +12.6% | Yes |
| Oct 2024 | $3021.2bn | 7.100% | -1.443 pp | +21.1% | Yes |
| Sep 2024 | $3198.4bn | 7.446% | -0.389 pp | +37.3% | Yes |
| Aug 2024 | $3100.6bn | 7.492% | -0.269 pp | +28.2% | Yes |
| Jul 2024 | $3109.6bn | 5.573% | +0.133 pp | +25.5% | No |
| Jun 2024 | $3321.9bn | 6.227% | +0.371 pp | +32.3% | No |
| May 2024 | $3085.4bn | 5.898% | -0.134 pp | +27.4% | No |
| Apr 2024 | $2893.6bn | 8.380% | +0.664 pp | +27.8% | No |
| Mar 2024 | $3126.1bn | 8.670% | +1.348 pp | +47.1% | Yes |
| Feb 2024 | $3073.5bn | 8.807% | +2.280 pp | +67.2% | 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.