Observatory · observe first
Merck & Co.
MRK · United States · Pharmaceuticals · matched S&P 500 member. Follow its market-weight contribution.
Historical time machine
Historical observation
20182026
Universe weight
0.620%
12M weight contribution
-0.179 pp
3M weight contribution
-0.047 pp
12M price return
+1.8%
Share of matched S&P 500 members
Monthly observations through Dec 2021
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 |
|---|---|---|---|---|---|
| Dec 2021 | $193.6bn | 0.620% | -0.179 pp | +1.8% | No |
| Nov 2021 | $189.2bn | 0.639% | -0.185 pp | +1.0% | No |
| Oct 2021 | $222.9bn | 0.744% | -0.115 pp | +26.9% | Yes |
| Sep 2021 | $190.1bn | 0.668% | +0.667 pp | -1.8% | Yes |
| Aug 2021 | $193.1bn | 0.646% | +0.645 pp | -3.1% | Yes |
| Jul 2021 | $194.6bn | 0.667% | +0.666 pp | +3.7% | Yes |
| Jun 2021 | $196.9bn | 0.695% | +0.694 pp | +8.9% | Yes |
| May 2021 | $183.4bn | 0.657% | +0.656 pp | -2.9% | Yes |
| Apr 2021 | $179.9bn | 0.652% | -0.423 pp | -3.1% | Yes |
| Mar 2021 | $186.1bn | 0.364% | +0.363 pp | +3.4% | No |
| Feb 2021 | $175.3bn | 0.350% | +0.350 pp | -2.1% | No |
| Jan 2021 | $186.1bn | 0.446% | -0.578 pp | -6.9% | No |
| Dec 2020 | $197.5bn | 0.799% | -0.285 pp | -7.2% | Yes |
| Nov 2020 | $194.1bn | 0.824% | -0.243 pp | -5.0% | Yes |
| Oct 2020 | $181.5bn | 0.859% | -0.244 pp | -10.5% | Yes |
| Sep 2020 | $200.2bn | 0.001% | -1.091 pp | +1.6% | No |
| Aug 2020 | $205.8bn | 0.001% | -1.148 pp | +1.6% | No |
| Jul 2020 | $193.3bn | 0.001% | -1.084 pp | -0.4% | No |
| Jun 2020 | $186.2bn | 0.001% | -1.109 pp | -5.0% | No |
| May 2020 | $194.4bn | 0.001% | -1.132 pp | +4.8% | No |
| Apr 2020 | $192.0bn | 1.075% | -0.006 pp | +3.7% | Yes |
| Mar 2020 | $186.2bn | 0.001% | -1.176 pp | -4.8% | No |
| Feb 2020 | $185.3bn | 0.001% | -1.160 pp | -3.3% | No |
| Jan 2020 | $207.6bn | 1.024% | +0.415 pp | +17.9% | 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.