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 Chemicals0.87%+0.46 ppIndustrial Gases0.76%+0.31 ppPaper & Plastic Packaging Products & Materials0.48%+0.17 ppFertilizers & Agricultural Chemicals0.22%+0.10 ppCopper0.18%+0.09 ppConstruction Materials0.17%+0.08 ppSteel0.10%+0.06 ppCommodity Chemicals0.15%+0.06 ppGold0.16%+0.05 ppMetal, Glass & Plastic Containers0.11%+0.04 pp
3 · Sub-industry
Inside Copper
Copper · weight
0.18%
Industry change · 12M
+0.09 pp
Copper · contribution
+0.090 pp
Company participation
100%
of industry constituents above their 6M weight average
4 · Companies driving this sub-industry
Jan 2022 · 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 |
|---|---|---|---|---|---|---|---|
| Freeport-McMoRan → FCX | United States | $54.7bn | 0.184% | -0.001 pp | +0.090 pp | +39.7% | 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.