Universe›Materials›Paper & Plastic Packaging Products & Materials›Paper & Plastic Packaging Products & Materials›Smurfit Westrock
Observatory · observe first
Smurfit Westrock
SW · United States · Paper & Plastic Packaging Products & Materials · matched S&P 500 member. Follow its market-weight contribution.
Historical time machine
Latest available · not live
20182026
Universe weight
0.039%
12M weight contribution
-0.006 pp
3M weight contribution
-0.003 pp
12M price return
+6.7%
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 | $23.1bn | 0.039% | -0.006 pp | +6.7% | Yes |
| Aug 2026 | $24.6bn | 0.041% | -0.010 pp | +2.0% | Yes |
| Jul 2026 | $24.1bn | 0.042% | -0.007 pp | +6.7% | Yes |
| Jun 2026 | $24.3bn | 0.042% | -0.006 pp | +10.5% | Yes |
| May 2026 | $21.6bn | 0.037% | -0.014 pp | -2.1% | Yes |
| Apr 2026 | $20.1bn | 0.027% | -0.025 pp | -6.0% | No |
| Mar 2026 | $20.9bn | 0.030% | -0.025 pp | -9.1% | No |
| Feb 2026 | $24.6bn | 0.034% | -0.027 pp | -7.2% | No |
| Jan 2026 | $21.7bn | 0.042% | -0.020 pp | -19.4% | No |
| Dec 2025 | $20.2bn | 0.040% | -0.024 pp | -26.2% | No |
| Nov 2025 | $18.6bn | 0.037% | -0.027 pp | -33.4% | No |
| Oct 2025 | $19.3bn | 0.038% | -0.025 pp | -25.9% | No |
| Sep 2025 | $22.2bn | 0.044% | -0.015 pp | -11.0% | No |
| Aug 2025 | $24.7bn | 0.051% | -0.008 pp | +3.2% | No |
| Jul 2025 | $23.2bn | 0.049% | +0.049 pp | +2.1% | No |
| Jun 2025 | $22.5bn | 0.049% | +0.049 pp | -3.5% | No |
| May 2025 | $22.6bn | 0.051% | +0.051 pp | -10.7% | No |
| Apr 2025 | $21.9bn | 0.053% | +0.053 pp | +0.3% | No |
| Mar 2025 | $23.5bn | 0.056% | +0.056 pp | +5.6% | No |
| Feb 2025 | $27.1bn | 0.061% | +0.061 pp | +33.5% | No |
| Jan 2025 | $27.6bn | 0.061% | +0.061 pp | +37.5% | No |
| Dec 2024 | $28.0bn | 0.064% | +0.064 pp | +37.6% | Yes |
| Nov 2024 | $28.6bn | 0.063% | +0.063 pp | +65.2% | Yes |
| Oct 2024 | $26.7bn | 0.063% | +0.063 pp | +67.6% | 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.