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 Equipment2.62%+0.68 ppManaged Health Care0.94%-0.32 ppBiotechnology1.86%+0.26 ppLife Sciences Tools & Services0.91%-0.18 ppPharmaceuticals3.59%+0.17 ppHealth Care Distributors0.43%+0.14 ppHealth Care Services0.49%+0.07 ppHealth Care Facilities0.21%+0.04 ppHealth Care Supplies0.09%-0.02 ppHealth Care Technology0.03%+0.01 pp
3 · Sub-industry
Inside Health Care Supplies
Health Care Supplies · weight
0.09%
Industry change · 12M
-0.02 pp
Health Care Supplies · contribution
-0.024 pp
Company participation
0%
of industry constituents above their 6M weight average
4 · Companies driving this sub-industry
May 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 | $15.1bn | 0.034% | -0.003 pp | -0.012 pp | -36.2% | No |
| Align Technology → ALGN | United States | $13.1bn | 0.030% | -0.001 pp | -0.007 pp | -29.7% | No |
| Cooper Companies (The) → COO | United States | $13.6bn | 0.031% | -0.009 pp | -0.005 pp | -27.6% | 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.