Observatory · observe first
Corning Inc.
GLW · United States · Electronic Components · matched S&P 500 member. Follow its market-weight contribution.
Historical time machine
Historical observation
20182026
Universe weight
0.141%
12M weight contribution
+0.051 pp
3M weight contribution
+0.044 pp
12M price return
+85.6%
Share of matched S&P 500 members
Monthly observations through Sep 2025
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 2025 | $70.3bn | 0.141% | +0.051 pp | +85.6% | Yes |
| Aug 2025 | $57.4bn | 0.119% | +0.033 pp | +63.6% | Yes |
| Jul 2025 | $54.2bn | 0.114% | +0.053 pp | +61.9% | Yes |
| Jun 2025 | $45.0bn | 0.097% | +0.035 pp | +38.7% | Yes |
| May 2025 | $42.5bn | 0.096% | +0.035 pp | +36.3% | Yes |
| Apr 2025 | $38.0bn | 0.091% | +0.009 pp | +36.5% | No |
| Mar 2025 | $39.2bn | 0.093% | +0.015 pp | +42.6% | No |
| Feb 2025 | $43.0bn | 0.096% | +0.017 pp | +59.7% | Yes |
| Jan 2025 | $44.6bn | 0.099% | +0.017 pp | +65.0% | Yes |
| Dec 2024 | $40.7bn | 0.092% | +0.015 pp | +60.6% | Yes |
| Nov 2024 | $41.7bn | 0.092% | +0.016 pp | +75.9% | Yes |
| Oct 2024 | $40.7bn | 0.096% | +0.018 pp | +83.8% | Yes |
| Sep 2024 | $38.6bn | 0.090% | +0.003 pp | +53.1% | Yes |
| Aug 2024 | $35.8bn | 0.087% | -0.003 pp | +31.8% | Yes |
| Jul 2024 | $34.3bn | 0.061% | -0.002 pp | +22.0% | No |
| Jun 2024 | $33.3bn | 0.062% | -0.007 pp | +14.8% | No |
| May 2024 | $31.9bn | 0.061% | -0.004 pp | +25.2% | No |
| Apr 2024 | $28.5bn | 0.083% | -0.013 pp | +4.2% | Yes |
| Mar 2024 | $28.1bn | 0.078% | -0.024 pp | -3.2% | No |
| Feb 2024 | $27.5bn | 0.079% | -0.022 pp | -1.6% | No |
| Jan 2024 | $27.7bn | 0.082% | -0.018 pp | -2.7% | Yes |
| Dec 2023 | $26.0bn | 0.077% | -0.020 pp | -1.2% | No |
| Nov 2023 | $24.3bn | 0.076% | -0.022 pp | -13.5% | No |
| Oct 2023 | $22.8bn | 0.078% | -0.019 pp | -14.0% | 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.