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 Chemicals0.50%-0.14 ppIndustrial Gases0.60%-0.10 ppCommodity Chemicals0.04%-0.05 ppCopper0.13%-0.02 ppGold0.17%+0.02 ppSteel0.11%-0.02 ppMetal, Glass & Plastic Containers0.03%-0.02 ppPaper & Plastic Packaging Products & Materials0.38%-0.01 ppFertilizers & Agricultural Chemicals0.16%+0.00 ppConstruction Materials0.16%-0.00 pp
3 · Sub-industry
Inside Specialty Chemicals
Specialty Chemicals · weight
0.50%
Industry change · 12M
-0.14 pp
Specialty Chemicals · contribution
-0.142 pp
Company participation
17%
of industry constituents above their 6M weight average
4 · Companies driving this sub-industry
Aug 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 |
|---|---|---|---|---|---|---|---|
| LyondellBasell → LYB | United States | $18.1bn | 0.038% | -0.004 pp | -0.040 pp | -38.0% | No |
| Sherwin-Williams → SHW | United States | $91.2bn | 0.189% | -0.015 pp | -0.036 pp | -0.1% | No |
| International Flavors & Fragrances → IFF | United States | $17.3bn | 0.036% | -0.009 pp | -0.028 pp | -33.8% | No |
| PPG Industries → PPG | United States | $25.1bn | 0.052% | -0.005 pp | -0.021 pp | -12.2% | No |
| Ecolab → ECL | United States | $78.6bn | 0.163% | -0.008 pp | -0.011 pp | +10.5% | No |
| Albemarle Corporation → ALB | United States | $10.0bn | 0.021% | +0.006 pp | -0.005 pp | -3.9% | 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.