Observatory · observe first
Norfolk Southern
NSC · United States · Rail Transportation · matched S&P 500 member. Follow its market-weight contribution.
Historical time machine
Historical observation
20182026
Universe weight
0.125%
12M weight contribution
-0.009 pp
3M weight contribution
-0.007 pp
12M price return
+15.6%
Share of matched S&P 500 members
Monthly observations through Oct 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 |
|---|---|---|---|---|---|
| Oct 2025 | $63.6bn | 0.125% | -0.009 pp | +15.6% | No |
| Sep 2025 | $67.5bn | 0.135% | +0.004 pp | +23.5% | Yes |
| Aug 2025 | $62.9bn | 0.130% | -0.010 pp | +11.7% | Yes |
| Jul 2025 | $62.4bn | 0.132% | +0.031 pp | +13.9% | Yes |
| Jun 2025 | $57.7bn | 0.124% | +0.034 pp | +21.9% | No |
| May 2025 | $55.7bn | 0.126% | +0.029 pp | +12.4% | Yes |
| Apr 2025 | $50.5bn | 0.121% | -0.029 pp | -0.5% | No |
| Mar 2025 | $53.6bn | 0.127% | -0.032 pp | -5.0% | No |
| Feb 2025 | $55.6bn | 0.124% | -0.040 pp | -0.8% | No |
| Jan 2025 | $57.8bn | 0.128% | -0.030 pp | +11.0% | No |
| Dec 2024 | $53.1bn | 0.120% | -0.039 pp | +1.6% | No |
| Nov 2024 | $62.4bn | 0.138% | -0.016 pp | +29.3% | Yes |
| Oct 2024 | $56.7bn | 0.133% | -0.014 pp | +34.5% | Yes |
| Sep 2024 | $56.2bn | 0.131% | -0.019 pp | +29.3% | Yes |
| Aug 2024 | $57.9bn | 0.140% | -0.008 pp | +28.0% | Yes |
| Jul 2024 | $56.4bn | 0.101% | -0.014 pp | +9.5% | No |
| Jun 2024 | $48.5bn | 0.091% | -0.028 pp | -3.0% | No |
| May 2024 | $50.8bn | 0.097% | -0.020 pp | +10.7% | No |
| Apr 2024 | $52.0bn | 0.151% | -0.005 pp | +16.4% | No |
| Mar 2024 | $57.6bn | 0.160% | -0.005 pp | +23.3% | Yes |
| Feb 2024 | $57.2bn | 0.164% | -0.016 pp | +15.6% | Yes |
| Jan 2024 | $53.2bn | 0.158% | -0.037 pp | -1.9% | Yes |
| Dec 2023 | $53.5bn | 0.159% | -0.046 pp | -1.6% | Yes |
| Nov 2023 | $49.3bn | 0.154% | -0.048 pp | -12.8% | 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.