Observatory · observe first
eBay Inc.
EBAY · United States · Broadline Retail · matched S&P 500 member. Follow its market-weight contribution.
Historical time machine
Historical observation
20182026
Universe weight
0.056%
12M weight contribution
-0.012 pp
3M weight contribution
-0.018 pp
12M price return
+42.5%
Share of matched S&P 500 members
Monthly observations through Feb 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 |
|---|---|---|---|---|---|
| Feb 2026 | $40.7bn | 0.056% | -0.012 pp | +42.5% | No |
| Jan 2026 | $41.2bn | 0.079% | +0.007 pp | +37.2% | Yes |
| Dec 2025 | $39.4bn | 0.077% | +0.010 pp | +42.7% | No |
| Nov 2025 | $37.4bn | 0.074% | +0.007 pp | +32.8% | No |
| Oct 2025 | $36.8bn | 0.072% | +0.007 pp | +43.6% | No |
| Sep 2025 | $41.6bn | 0.083% | +0.009 pp | +41.9% | Yes |
| Aug 2025 | $41.4bn | 0.086% | +0.016 pp | +55.8% | Yes |
| Jul 2025 | $41.9bn | 0.088% | +0.038 pp | +67.9% | Yes |
| Jun 2025 | $34.3bn | 0.074% | +0.023 pp | +41.0% | Yes |
| May 2025 | $33.7bn | 0.076% | +0.024 pp | +37.3% | Yes |
| Apr 2025 | $31.8bn | 0.076% | -0.001 pp | +34.7% | Yes |
| Mar 2025 | $31.6bn | 0.075% | -0.001 pp | +30.7% | Yes |
| Feb 2025 | $30.2bn | 0.067% | -0.003 pp | +39.6% | No |
| Jan 2025 | $32.3bn | 0.072% | +0.008 pp | +67.5% | Yes |
| Dec 2024 | $29.7bn | 0.067% | -0.000 pp | +44.8% | Yes |
| Nov 2024 | $30.3bn | 0.067% | +0.001 pp | +57.3% | Yes |
| Oct 2024 | $27.5bn | 0.065% | -0.006 pp | +49.7% | Yes |
| Sep 2024 | $31.8bn | 0.074% | -0.004 pp | +50.8% | Yes |
| Aug 2024 | $28.9bn | 0.070% | -0.006 pp | +34.8% | Yes |
| Jul 2024 | $27.9bn | 0.050% | -0.002 pp | +27.7% | No |
| Jun 2024 | $27.0bn | 0.051% | -0.005 pp | +22.9% | No |
| May 2024 | $27.2bn | 0.052% | -0.004 pp | +30.3% | No |
| Apr 2024 | $26.7bn | 0.077% | -0.006 pp | +13.6% | Yes |
| Mar 2024 | $27.3bn | 0.076% | -0.005 pp | +21.7% | 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.