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
Industrial Gases0.79%+0.58 ppCopper0.11%-0.05 ppSpecialty Chemicals0.83%-0.05 ppPaper & Plastic Packaging Products & Materials0.21%-0.04 ppMetal, Glass & Plastic Containers0.11%+0.03 ppGold0.11%-0.02 ppSteel0.10%-0.02 ppConstruction Materials0.16%-0.01 ppFertilizers & Agricultural Chemicals0.11%+0.00 ppCommodity Chemicals0.00%+0.00 pp
3 · Sub-industry
Inside Specialty Chemicals
Specialty Chemicals · weight
0.83%
Industry change · 12M
-0.05 pp
Specialty Chemicals · contribution
-0.045 pp
Company participation
100%
of industry constituents above their 6M weight average
4 · Companies driving this sub-industry
Mar 2019 · 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 | $31.2bn | 0.179% | +0.065 pp | -0.077 pp | -17.1% | Yes |
| Ecolab → ECL | United States | $50.8bn | 0.292% | +0.140 pp | +0.049 pp | +30.2% | Yes |
| PPG Industries → PPG | United States | $26.6bn | 0.153% | +0.065 pp | -0.018 pp | +2.9% | Yes |
| Albemarle Corporation → ALB | United States | $8.7bn | 0.050% | +0.021 pp | -0.013 pp | -10.3% | Yes |
| International Flavors & Fragrances → IFF | United States | $13.7bn | 0.079% | +0.028 pp | +0.013 pp | -3.8% | Yes |
| Sherwin-Williams → SHW | United States | $13.3bn | 0.076% | +0.033 pp | +0.001 pp | +10.8% | 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.