Observatory · observe first
Pfizer
PFE · United States · Pharmaceuticals · matched S&P 500 member. Follow its market-weight contribution.
Historical time machine
Historical observation
20182026
Universe weight
0.259%
12M weight contribution
-0.044 pp
3M weight contribution
+0.043 pp
12M price return
+19.2%
Share of matched S&P 500 members
Monthly observations through May 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 |
|---|---|---|---|---|---|
| May 2026 | $149.2bn | 0.259% | -0.044 pp | +19.2% | Yes |
| Apr 2026 | $151.8bn | 0.206% | -0.126 pp | +17.3% | No |
| Mar 2026 | $159.7bn | 0.233% | -0.108 pp | +18.9% | No |
| Feb 2026 | $157.2bn | 0.216% | -0.119 pp | +12.2% | No |
| Jan 2026 | $150.3bn | 0.288% | -0.047 pp | +6.9% | Yes |
| Dec 2025 | $141.6bn | 0.277% | -0.064 pp | +0.6% | No |
| Nov 2025 | $146.3bn | 0.287% | -0.040 pp | +5.3% | Yes |
| Oct 2025 | $140.1bn | 0.275% | -0.102 pp | -6.8% | No |
| Sep 2025 | $144.9bn | 0.290% | -0.092 pp | -5.8% | No |
| Aug 2025 | $140.8bn | 0.292% | -0.105 pp | -8.7% | No |
| Jul 2025 | $132.4bn | 0.279% | -0.031 pp | -18.4% | No |
| Jun 2025 | $137.8bn | 0.297% | -0.000 pp | -7.6% | No |
| May 2025 | $133.5bn | 0.303% | -0.008 pp | -12.6% | No |
| Apr 2025 | $138.3bn | 0.332% | -0.087 pp | +1.2% | No |
| Mar 2025 | $143.6bn | 0.341% | -0.094 pp | -3.0% | No |
| Feb 2025 | $149.8bn | 0.335% | -0.095 pp | +5.7% | No |
| Jan 2025 | $150.3bn | 0.334% | -0.120 pp | +4.1% | No |
| Dec 2024 | $150.3bn | 0.341% | -0.144 pp | -2.2% | No |
| Nov 2024 | $148.5bn | 0.328% | -0.209 pp | -8.7% | No |
| Oct 2024 | $160.4bn | 0.377% | -0.210 pp | -1.9% | Yes |
| Sep 2024 | $164.0bn | 0.382% | -0.244 pp | -7.6% | Yes |
| Aug 2024 | $164.4bn | 0.397% | -0.239 pp | -13.2% | Yes |
| Jul 2024 | $173.1bn | 0.310% | -0.134 pp | -10.3% | No |
| Jun 2024 | $158.6bn | 0.297% | -0.182 pp | -19.5% | No |
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.