Observatory · observe first
Follow the allocation change
Matched S&P 500 members → sector → industry → sub-industry → company. Each step uses the same percentage points.
Historical time machine
Historical observation
20182026
1 · Sector
Weight and 12M allocation change
2 · Industry
Inside Materials
Specialty Chemicals0.46%-0.17 ppIndustrial Gases0.57%-0.12 ppCommodity Chemicals0.03%-0.06 ppCopper0.11%-0.05 ppGold0.19%+0.04 ppPaper & Plastic Packaging Products & Materials0.35%-0.03 ppSteel0.10%-0.03 ppMetal, Glass & Plastic Containers0.03%-0.02 ppFertilizers & Agricultural Chemicals0.14%-0.01 ppConstruction Materials0.16%+0.00 pp
3 · Sub-industry
Inside Specialty Chemicals
Specialty Chemicals · weight
0.46%
Industry change · 12M
-0.17 pp
Specialty Chemicals · contribution
-0.168 pp
Company participation
17%
of industry constituents above their 6M weight average
4 · Companies driving this sub-industry
Sep 2025 · sorted by absolute contribution to 12-month change
| Company | Country | Market cap | Universe weight | 3M contribution | 12M contribution | 12M price return | Above 6M weight average |
|---|---|---|---|---|---|---|---|
| Sherwin-Williams → SHW | United States | $86.3bn | 0.173% | -0.013 pp | -0.051 pp | -8.5% | No |
| LyondellBasell → LYB | United States | $15.8bn | 0.032% | -0.009 pp | -0.041 pp | -44.5% | No |
| International Flavors & Fragrances → IFF | United States | $15.8bn | 0.032% | -0.009 pp | -0.031 pp | -40.1% | No |
| PPG Industries → PPG | United States | $23.7bn | 0.047% | -0.008 pp | -0.024 pp | -18.7% | No |
| Ecolab → ECL | United States | $77.7bn | 0.155% | -0.009 pp | -0.014 pp | +8.3% | No |
| Albemarle Corporation → ALB | United States | $9.5bn | 0.019% | +0.003 pp | -0.007 pp | -12.5% | Yes |
Company contributions use weights among matched S&P 500 members and add through each level without rescaling. Companies without matched shares and prices are omitted. These observations do not establish official index weights or actual fund flows.