Observatory · observe first
CSX Corporation
CSX · United States · Rail Transportation · matched S&P 500 member. Follow its market-weight contribution.
Historical time machine
Historical observation
20182026
Universe weight
0.146%
12M weight contribution
+0.011 pp
3M weight contribution
+0.037 pp
12M price return
+45.3%
Share of matched S&P 500 members
Monthly observations through May 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 |
|---|---|---|---|---|---|
| May 2026 | $84.1bn | 0.146% | +0.011 pp | +45.3% | Yes |
| Apr 2026 | $84.4bn | 0.115% | -0.012 pp | +64.3% | No |
| Mar 2026 | $76.3bn | 0.111% | -0.021 pp | +41.6% | No |
| Feb 2026 | $79.4bn | 0.109% | -0.027 pp | +35.4% | No |
| Jan 2026 | $70.3bn | 0.135% | -0.006 pp | +16.7% | Yes |
| Dec 2025 | $67.5bn | 0.132% | -0.009 pp | +14.1% | Yes |
| Nov 2025 | $65.8bn | 0.129% | -0.026 pp | -1.7% | No |
| Oct 2025 | $67.1bn | 0.131% | -0.021 pp | +8.7% | No |
| Sep 2025 | $66.2bn | 0.133% | -0.023 pp | +4.4% | Yes |
| Aug 2025 | $60.6bn | 0.126% | -0.035 pp | -3.7% | No |
| Jul 2025 | $66.3bn | 0.140% | +0.017 pp | +2.8% | Yes |
| Jun 2025 | $61.3bn | 0.132% | +0.010 pp | -1.0% | No |
| May 2025 | $59.3bn | 0.134% | +0.008 pp | -5.0% | No |
| Apr 2025 | $52.7bn | 0.127% | -0.061 pp | -14.3% | No |
| Mar 2025 | $55.8bn | 0.132% | -0.069 pp | -19.4% | No |
| Feb 2025 | $60.6bn | 0.136% | -0.077 pp | -14.4% | No |
| Jan 2025 | $63.4bn | 0.141% | -0.069 pp | -6.7% | No |
| Dec 2024 | $62.2bn | 0.141% | -0.063 pp | -5.6% | No |
| Nov 2024 | $70.5bn | 0.156% | -0.043 pp | +14.7% | Yes |
| Oct 2024 | $64.9bn | 0.152% | -0.048 pp | +14.3% | Yes |
| Sep 2024 | $66.9bn | 0.156% | -0.050 pp | +13.8% | Yes |
| Aug 2024 | $66.4bn | 0.161% | -0.033 pp | +15.0% | Yes |
| Jul 2024 | $68.6bn | 0.123% | -0.023 pp | +6.8% | No |
| Jun 2024 | $65.4bn | 0.123% | -0.038 pp | -0.5% | 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.