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 Chemicals0.81%+0.40 ppIndustrial Gases0.73%+0.32 ppFertilizers & Agricultural Chemicals0.29%+0.18 ppPaper & Plastic Packaging Products & Materials0.44%+0.17 ppCopper0.24%+0.15 ppGold0.21%+0.12 ppSteel0.13%+0.09 ppConstruction Materials0.16%+0.08 ppCommodity Chemicals0.16%+0.06 ppMetal, Glass & Plastic Containers0.10%+0.04 pp
3 · Sub-industry
Inside Copper
Copper · weight
0.24%
Industry change · 12M
+0.15 pp
Copper · contribution
+0.150 pp
Company participation
100%
of industry constituents above their 6M weight average
4 · Companies driving this sub-industry
Mar 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 | $72.4bn | 0.244% | +0.047 pp | +0.150 pp | +52.5% | 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.