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 Chemicals0.97%+0.22 ppCopper0.20%+0.13 ppGold0.18%-0.09 ppIndustrial Gases0.77%-0.05 ppPaper & Plastic Packaging Products & Materials0.53%-0.05 ppFertilizers & Agricultural Chemicals0.22%+0.05 ppSteel0.09%+0.02 ppCommodity Chemicals0.17%+0.02 ppConstruction Materials0.17%+0.02 ppMetal, Glass & Plastic Containers0.11%-0.01 pp
3 · Sub-industry
Inside Specialty Chemicals
Specialty Chemicals · weight
0.97%
Industry change · 12M
+0.22 pp
Specialty Chemicals · contribution
+0.222 pp
Company participation
100%
of industry constituents above their 6M weight average
4 · Companies driving this sub-industry
Apr 2021 · 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 | $72.8bn | 0.264% | +0.214 pp | +0.173 pp | +54.5% | Yes |
| Ecolab → ECL | United States | $64.1bn | 0.232% | +0.092 pp | -0.080 pp | +16.9% | Yes |
| International Flavors & Fragrances → IFF | United States | $35.4bn | 0.128% | +0.099 pp | +0.050 pp | +11.3% | Yes |
| Albemarle Corporation → ALB | United States | $19.6bn | 0.071% | +0.030 pp | +0.035 pp | +177.6% | Yes |
| PPG Industries → PPG | United States | $40.6bn | 0.147% | +0.071 pp | +0.027 pp | +92.0% | Yes |
| LyondellBasell → LYB | United States | $34.7bn | 0.126% | +0.057 pp | +0.018 pp | +88.5% | 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.