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 Equipment1.41%-1.27 ppPharmaceuticals3.06%-1.12 ppManaged Health Care0.51%-1.01 ppBiotechnology1.45%-0.69 ppLife Sciences Tools & Services0.65%-0.44 ppHealth Care Services0.31%-0.22 ppHealth Care Distributors0.33%-0.10 ppHealth Care Facilities0.15%-0.05 ppHealth Care Supplies0.06%-0.04 ppHealth Care Technology0.02%-0.01 pp
3 · Sub-industry
Inside Health Care Supplies
Health Care Supplies · weight
0.06%
Industry change · 12M
-0.04 pp
Health Care Supplies · contribution
-0.042 pp
Company participation
0%
of industry constituents above their 6M weight average
4 · Companies driving this sub-industry
Mar 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 |
|---|---|---|---|---|---|---|---|
| Cooper Companies (The) → COO | United States | $14.0bn | 0.020% | -0.011 pp | -0.020 pp | -15.2% | No |
| West Pharmaceutical Services → WST | United States | $18.1bn | 0.026% | -0.012 pp | -0.012 pp | +12.3% | No |
| Align Technology → ALGN | United States | $12.2bn | 0.018% | -0.004 pp | -0.010 pp | +7.9% | 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.