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
Paper & Plastic Packaging Products & Materials27.79%+27.26 ppSpecialty Chemicals0.51%-0.38 ppIndustrial Gases0.58%-0.21 ppFertilizers & Agricultural Chemicals0.15%-0.17 ppGold0.08%-0.11 ppCommodity Chemicals0.09%-0.09 ppCopper0.12%-0.08 ppMetal, Glass & Plastic Containers0.04%-0.04 ppConstruction Materials0.13%-0.03 ppSteel0.12%-0.01 pp
3 · Sub-industry
Inside Metal, Glass & Plastic Containers
Metal, Glass & Plastic Containers · weight
0.04%
Industry change · 12M
-0.04 pp
Metal, Glass & Plastic Containers · contribution
-0.042 pp
Company participation
0%
of industry constituents above their 6M weight average
4 · Companies driving this sub-industry
May 2023 · 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 | $16.1bn | 0.040% | -0.022 pp | -0.042 pp | -26.8% | 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.