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 & Materials0.31%-30.61 ppIndustrial Gases0.61%+0.11 ppFertilizers & Agricultural Chemicals0.17%+0.05 ppSpecialty Chemicals0.50%+0.05 ppGold0.14%+0.05 ppCommodity Chemicals0.04%-0.03 ppConstruction Materials0.15%+0.02 ppSteel0.11%-0.00 ppCopper0.13%+0.00 ppMetal, Glass & Plastic Containers0.03%-0.00 pp
3 · Sub-industry
Inside Industrial Gases
Industrial Gases · weight
0.61%
Industry change · 12M
+0.11 pp
Industrial Gases · contribution
+0.109 pp
Company participation
0%
of industry constituents above their 6M weight average
4 · Companies driving this sub-industry
Jun 2025 · 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 |
|---|---|---|---|---|---|---|---|
| Linde plc → LIN | United States | $221.1bn | 0.477% | -0.046 pp | +0.081 pp | +8.3% | No |
| Air Products → APD | United States | $62.8bn | 0.135% | -0.020 pp | +0.028 pp | +12.1% | 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.