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 Chemicals0.48%-0.40 ppPaper & Plastic Packaging Products & Materials0.13%-0.14 ppConstruction Materials0.09%-0.10 ppCopper0.07%-0.10 ppIndustrial Gases0.12%-0.09 ppGold0.05%-0.07 ppSteel0.06%-0.06 ppFertilizers & Agricultural Chemicals0.08%-0.03 ppMetal, Glass & Plastic Containers0.05%-0.03 ppCommodity Chemicals0.00%+0.00 pp
3 · Sub-industry
Inside Specialty Chemicals
Specialty Chemicals · weight
0.48%
Industry change · 12M
-0.40 pp
Specialty Chemicals · contribution
-0.400 pp
Company participation
0%
of industry constituents above their 6M weight average
4 · Companies driving this sub-industry
Aug 2018 · 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 | $43.9bn | 0.142% | -0.125 pp | -0.128 pp | -4.2% | No |
| Ecolab → ECL | United States | $43.5bn | 0.140% | -0.109 pp | -0.087 pp | +9.9% | No |
| PPG Industries → PPG | United States | $26.8bn | 0.086% | -0.067 pp | -0.086 pp | -5.7% | No |
| Albemarle Corporation → ALB | United States | $10.4bn | 0.033% | -0.029 pp | -0.037 pp | -13.8% | No |
| International Flavors & Fragrances → IFF | United States | $10.3bn | 0.033% | -0.025 pp | -0.034 pp | -12.4% | No |
| Sherwin-Williams → SHW | United States | $14.2bn | 0.046% | -0.026 pp | -0.028 pp | +9.9% | No |
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.