Observatory · observe first
Berkshire Hathaway
BRK.B · United States · Multi-Sector Holdings · matched S&P 500 member. Follow its market-weight contribution.
Historical time machine
Historical observation
20182026
Universe weight
0.001%
12M weight contribution
-0.000 pp
3M weight contribution
-0.000 pp
12M price return
+20.9%
Share of matched S&P 500 members
Monthly observations through Nov 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 |
|---|---|---|---|---|---|
| Nov 2021 | $0.3bn | 0.001% | -0.000 pp | +20.9% | No |
| Oct 2021 | $0.3bn | 0.001% | +0.000 pp | +42.2% | No |
| Sep 2021 | $0.3bn | 0.001% | +0.001 pp | +28.2% | No |
| Aug 2021 | $0.3bn | 0.001% | +0.001 pp | +31.1% | Yes |
| Jul 2021 | $0.3bn | 0.001% | +0.001 pp | +42.1% | Yes |
| Jun 2021 | $0.3bn | 0.001% | +0.001 pp | +55.7% | Yes |
| May 2021 | $0.3bn | 0.001% | +0.001 pp | +56.0% | Yes |
| Apr 2021 | $0.3bn | 0.001% | -0.000 pp | +46.7% | Yes |
| Mar 2021 | $0.2bn | 0.000% | +0.000 pp | +39.7% | No |
| Feb 2021 | $0.2bn | 0.000% | +0.000 pp | +16.6% | No |
| Jan 2021 | $0.2bn | 0.001% | -0.001 pp | +1.5% | No |
| Dec 2020 | $0.2bn | 0.001% | -0.000 pp | +2.4% | Yes |
| Nov 2020 | $0.2bn | 0.001% | -0.000 pp | +3.9% | Yes |
| Oct 2020 | $0.2bn | 0.001% | -0.000 pp | -5.0% | Yes |
| Sep 2020 | $0.2bn | 0.000% | -0.001 pp | +2.4% | No |
| Aug 2020 | $0.2bn | 0.000% | -0.001 pp | +7.2% | No |
| Jul 2020 | $0.2bn | 0.000% | -0.001 pp | -4.7% | No |
| Jun 2020 | $0.2bn | 0.000% | -0.001 pp | -16.3% | No |
| May 2020 | $0.2bn | 0.000% | -0.001 pp | -6.0% | No |
| Apr 2020 | $0.2bn | 0.001% | -0.000 pp | -13.5% | Yes |
| Mar 2020 | $0.2bn | 0.000% | -0.001 pp | -9.0% | No |
| Feb 2020 | $0.2bn | 0.000% | -0.001 pp | +2.5% | No |
| Jan 2020 | $0.2bn | 0.001% | +0.000 pp | +9.2% | No |
| Dec 2019 | $0.2bn | 0.001% | +0.000 pp | +10.9% | 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.