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
Managed Health Care0.83%-0.76 ppPharmaceuticals4.11%+0.25 ppHealth Care Equipment2.35%-0.12 ppHealth Care Distributors0.47%+0.10 ppLife Sciences Tools & Services1.06%-0.10 ppBiotechnology1.94%+0.09 ppHealth Care Supplies0.09%-0.05 ppHealth Care Facilities0.23%+0.04 ppHealth Care Services0.45%-0.04 ppHealth Care Technology0.03%+0.00 pp
3 · Sub-industry
Inside Health Care Supplies
Health Care Supplies · weight
0.09%
Industry change · 12M
-0.05 pp
Health Care Supplies · contribution
-0.046 pp
Company participation
67%
of industry constituents above their 6M weight average
4 · Companies driving this sub-industry
Nov 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 |
|---|---|---|---|---|---|---|---|
| Align Technology → ALGN | United States | $10.6bn | 0.021% | -0.001 pp | -0.018 pp | -36.8% | No |
| Cooper Companies (The) → COO | United States | $15.5bn | 0.030% | +0.003 pp | -0.015 pp | -25.4% | Yes |
| West Pharmaceutical Services → WST | United States | $19.9bn | 0.039% | +0.002 pp | -0.013 pp | -14.6% | 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.