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 Care0.84%-0.55 ppPharmaceuticals4.11%+0.28 ppHealth Care Equipment2.25%-0.18 ppLife Sciences Tools & Services1.03%-0.12 ppBiotechnology1.91%+0.12 ppHealth Care Distributors0.44%+0.09 ppHealth Care Supplies0.09%-0.04 ppHealth Care Facilities0.21%+0.04 ppHealth Care Services0.44%+0.02 ppHealth Care Technology0.03%+0.00 pp
3 · Sub-industry
Inside Health Care Supplies
Health Care Supplies · weight
0.09%
Industry change · 12M
-0.04 pp
Health Care Supplies · contribution
-0.039 pp
Company participation
100%
of industry constituents above their 6M weight average
4 · Companies driving this sub-industry
Dec 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 |
|---|---|---|---|---|---|---|---|
| West Pharmaceutical Services → WST | United States | $19.8bn | 0.039% | +0.001 pp | -0.015 pp | -15.7% | Yes |
| Align Technology → ALGN | United States | $11.2bn | 0.022% | +0.004 pp | -0.013 pp | -25.1% | Yes |
| Cooper Companies (The) → COO | United States | $16.1bn | 0.031% | +0.004 pp | -0.010 pp | -10.8% | 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.