Universe›Consumer Staples›Consumer Staples Merchandise Retail›Consumer Staples Merchandise Retail›Costco
Observatory · observe first
Costco
COST · United States · Consumer Staples Merchandise Retail · matched S&P 500 member. Follow its market-weight contribution.
Historical time machine
Historical observation
20182026
Universe weight
0.675%
12M weight contribution
+0.038 pp
3M weight contribution
+0.675 pp
12M price return
+32.7%
Share of matched S&P 500 members
Monthly observations through Dec 2020
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 2020 | $166.9bn | 0.675% | +0.038 pp | +32.7% | Yes |
| Nov 2020 | $172.9bn | 0.734% | +0.070 pp | +31.8% | Yes |
| Oct 2020 | $157.8bn | 0.747% | +0.066 pp | +21.4% | Yes |
| Sep 2020 | $156.7bn | 0.001% | -0.672 pp | +24.3% | No |
| Aug 2020 | $153.5bn | 0.001% | -0.704 pp | +19.0% | No |
| Jul 2020 | $143.7bn | 0.001% | -0.644 pp | +19.4% | No |
| Jun 2020 | $133.9bn | 0.001% | -0.626 pp | +15.7% | No |
| May 2020 | $136.2bn | 0.001% | -0.613 pp | +29.9% | No |
| Apr 2020 | $133.8bn | 0.749% | +0.147 pp | +24.8% | Yes |
| Mar 2020 | $125.9bn | 0.001% | -0.611 pp | +18.8% | No |
| Feb 2020 | $124.2bn | 0.001% | -0.558 pp | +29.7% | No |
| Jan 2020 | $135.0bn | 0.666% | +0.354 pp | +43.7% | No |
| Dec 2019 | $129.8bn | 0.637% | +0.316 pp | +45.7% | No |
| Nov 2019 | $131.8bn | 0.664% | +0.327 pp | +30.9% | No |
| Oct 2019 | $130.6bn | 0.681% | +0.341 pp | +31.5% | Yes |
| Sep 2019 | $126.7bn | 0.673% | +0.345 pp | +23.9% | Yes |
| Aug 2019 | $129.6bn | 0.705% | +0.375 pp | +27.7% | Yes |
| Jul 2019 | $121.2bn | 0.645% | +0.086 pp | +27.3% | Yes |
| Jun 2019 | $116.2bn | 0.627% | +0.070 pp | +27.8% | Yes |
| May 2019 | $105.4bn | 0.614% | +0.086 pp | +22.1% | Yes |
| Apr 2019 | $108.0bn | 0.602% | +0.070 pp | +25.8% | Yes |
| Mar 2019 | $106.5bn | 0.612% | +0.105 pp | +29.9% | Yes |
| Feb 2019 | $96.4bn | 0.558% | +0.056 pp | +15.8% | Yes |
| Jan 2019 | $94.5bn | 0.312% | -0.176 pp | +11.3% | 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.