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 Health Care
Pharmaceuticals4.86%-0.37 ppLife Sciences Tools & Services2.05%+0.28 ppBiotechnology2.35%-0.27 ppHealth Care Services0.89%-0.17 ppHealth Care Supplies0.27%+0.14 ppHealth Care Equipment3.36%+0.06 ppHealth Care Distributors0.32%-0.04 ppHealth Care Facilities0.22%-0.02 ppManaged Health Care2.06%+0.00 ppHealth Care Technology0.00%+0.00 pp
3 · Sub-industry
Inside Health Care Supplies
Health Care Supplies · weight
0.27%
Industry change · 12M
+0.14 pp
Health Care Supplies · contribution
+0.137 pp
Company participation
100%
of industry constituents above their 6M weight average
4 · Companies driving this sub-industry
Nov 2020 · 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 |
|---|---|---|---|---|---|---|---|
| West Pharmaceutical Services → WST | United States | $20.3bn | 0.086% | +0.086 pp | +0.086 pp | +87.7% | Yes |
| Align Technology → ALGN | United States | $37.9bn | 0.161% | +0.161 pp | +0.051 pp | +73.5% | Yes |
| Cooper Companies (The) → COO | United States | $4.5bn | 0.019% | +0.019 pp | -0.001 pp | +7.1% | 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.