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
1.067%
12M weight contribution
+0.413 pp
3M weight contribution
-0.082 pp
12M price return
+12.9%
Share of matched S&P 500 members
Monthly observations through Nov 2019
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 |
|---|---|---|---|---|---|
| Nov 2019 | $211.8bn | 1.067% | +0.413 pp | +12.9% | No |
| Oct 2019 | $211.7bn | 1.104% | +0.470 pp | +21.0% | No |
| Sep 2019 | $205.7bn | 1.092% | +0.519 pp | +21.9% | No |
| Aug 2019 | $211.3bn | 1.149% | +0.587 pp | +29.5% | Yes |
| Jul 2019 | $203.9bn | 1.085% | +0.099 pp | +29.5% | No |
| Jun 2019 | $206.0bn | 1.110% | +0.165 pp | +41.9% | Yes |
| May 2019 | $194.6bn | 1.133% | +0.206 pp | +36.9% | Yes |
| Apr 2019 | $193.9bn | 1.080% | +0.149 pp | +37.5% | Yes |
| Mar 2019 | $204.8bn | 1.177% | +0.317 pp | +57.1% | Yes |
| Feb 2019 | $200.2bn | 1.161% | +0.325 pp | +54.5% | Yes |
| Jan 2019 | $184.7bn | 0.609% | -0.269 pp | +29.5% | No |
| Dec 2018 | $189.6bn | 0.678% | -0.201 pp | +32.9% | No |
| Nov 2018 | $196.9bn | 0.654% | -0.225 pp | +37.1% | No |
| Oct 2018 | $186.8bn | 0.633% | -0.245 pp | +27.2% | No |
| Sep 2018 | $180.0bn | 0.574% | -0.305 pp | +22.5% | No |
| Aug 2018 | $174.1bn | 0.562% | -0.317 pp | +17.7% | No |
| Jul 2018 | $169.1bn | 0.986% | +0.108 pp | +13.0% | Yes |
| Jun 2018 | $155.8bn | 0.945% | +0.067 pp | +4.1% | Yes |
| May 2018 | $152.8bn | 0.927% | +0.049 pp | +1.4% | Yes |
| Apr 2018 | $151.5bn | 0.931% | +0.052 pp | +0.2% | Yes |
| Mar 2018 | $140.1bn | 0.860% | -0.019 pp | -7.3% | Yes |
| Feb 2018 | $139.5bn | 0.836% | -0.043 pp | -8.5% | No |
| Jan 2018 | $154.0bn | 0.879% | +0.000 pp | +0.0% | 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.