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
Health Care Equipment1.52%-1.02 ppPharmaceuticals4.10%+0.62 ppBiotechnology1.85%+0.08 ppLife Sciences Tools & Services0.83%-0.07 ppHealth Care Distributors0.37%-0.06 ppHealth Care Facilities0.15%-0.05 ppHealth Care Technology0.07%+0.05 ppHealth Care Services0.46%-0.03 ppManaged Health Care0.94%+0.02 ppHealth Care Supplies0.09%-0.00 pp
3 · Sub-industry
Inside Health Care Supplies
Health Care Supplies · weight
0.09%
Industry change · 12M
-0.00 pp
Health Care Supplies · contribution
-0.005 pp
Company participation
100%
of industry constituents above their 6M weight average
4 · Companies driving this sub-industry
Jun 2026 · 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 | $25.4bn | 0.044% | +0.018 pp | +0.010 pp | +64.6% | Yes |
| Align Technology → ALGN | United States | $12.1bn | 0.021% | +0.003 pp | -0.009 pp | -10.9% | Yes |
| Cooper Companies (The) → COO | United States | $14.0bn | 0.024% | +0.004 pp | -0.006 pp | +0.8% | 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.