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 Chemicals0.93%+0.93 ppIndustrial Gases0.76%+0.75 ppPaper & Plastic Packaging Products & Materials0.50%+0.50 ppFertilizers & Agricultural Chemicals0.20%+0.20 ppCopper0.19%+0.19 ppGold0.18%+0.18 ppCommodity Chemicals0.17%+0.17 ppConstruction Materials0.16%+0.16 ppSteel0.10%+0.10 ppMetal, Glass & Plastic Containers0.09%+0.09 pp
3 · Sub-industry
Inside Metal, Glass & Plastic Containers
Metal, Glass & Plastic Containers · weight
0.09%
Industry change · 12M
+0.09 pp
Metal, Glass & Plastic Containers · contribution
+0.094 pp
Company participation
100%
of industry constituents above their 6M weight average
4 · Companies driving this sub-industry
Jun 2021 · 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 |
|---|---|---|---|---|---|---|---|
| Ball Corporation → BALL | United States | $26.6bn | 0.094% | +0.040 pp | +0.094 pp | +17.4% | 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.