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
Industrial Gases0.80%+0.69 ppPaper & Plastic Packaging Products & Materials0.60%+0.48 ppSpecialty Chemicals0.79%+0.32 ppCommodity Chemicals0.20%+0.20 ppFertilizers & Agricultural Chemicals0.19%+0.12 ppGold0.17%+0.11 ppConstruction Materials0.18%+0.10 ppMetal, Glass & Plastic Containers0.12%+0.07 ppSteel0.09%+0.02 ppCopper0.07%+0.02 pp
3 · Sub-industry
Inside Industrial Gases
Industrial Gases · weight
0.80%
Industry change · 12M
+0.69 pp
Industrial Gases · contribution
+0.689 pp
Company participation
0%
of industry constituents above their 6M weight average
4 · Companies driving this sub-industry
Oct 2019 · 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 | $107.2bn | 0.559% | +0.006 pp | +0.559 pp | +22.3% | No |
| Air Products → APD | United States | $47.0bn | 0.245% | -0.023 pp | +0.130 pp | +41.4% | 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.