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
0.128%
12M weight contribution
-0.002 pp
3M weight contribution
+0.010 pp
12M price return
+24.6%
Share of matched S&P 500 members
Monthly observations through Aug 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 |
|---|---|---|---|---|---|
| Aug 2026 | $77.0bn | 0.128% | -0.002 pp | +24.6% | Yes |
| Jul 2026 | $75.4bn | 0.132% | -0.000 pp | +22.9% | Yes |
| Jun 2026 | $70.7bn | 0.123% | -0.002 pp | +25.2% | Yes |
| May 2026 | $68.5bn | 0.119% | -0.008 pp | +25.7% | Yes |
| Apr 2026 | $70.9bn | 0.096% | -0.025 pp | +43.8% | No |
| Mar 2026 | $64.5bn | 0.094% | -0.033 pp | +23.6% | No |
| Feb 2026 | $70.7bn | 0.097% | -0.027 pp | +30.7% | No |
| Jan 2026 | $65.4bn | 0.125% | -0.003 pp | +16.5% | No |
| Dec 2025 | $64.8bn | 0.127% | +0.006 pp | +25.6% | No |
| Nov 2025 | $65.5bn | 0.129% | -0.009 pp | +8.2% | No |
| 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 |
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.