Observatory · observe first
eBay Inc.
EBAY · United States · Broadline Retail · matched S&P 500 member. Follow its market-weight contribution.
Historical time machine
Latest available · not live
20182026
Universe weight
0.079%
12M weight contribution
-0.004 pp
3M weight contribution
-0.007 pp
12M price return
+18.1%
Share of matched S&P 500 members
Monthly observations through Sep 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 |
|---|---|---|---|---|---|
| Sep 2026 | $47.2bn | 0.079% | -0.004 pp | +18.1% | No |
| Aug 2026 | $46.1bn | 0.077% | -0.009 pp | +15.7% | Yes |
| Jul 2026 | $50.6bn | 0.088% | -0.000 pp | +25.9% | Yes |
| Jun 2026 | $49.6bn | 0.086% | +0.012 pp | +52.0% | Yes |
| May 2026 | $48.5bn | 0.084% | +0.008 pp | +51.3% | Yes |
| Apr 2026 | $45.9bn | 0.062% | -0.014 pp | +54.0% | No |
| Mar 2026 | $40.8bn | 0.059% | -0.016 pp | +36.3% | No |
| 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 |
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.