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 Equipment2.92%-0.42 ppManaged Health Care1.87%-0.41 ppBiotechnology2.28%-0.34 ppLife Sciences Tools & Services1.64%-0.21 ppPharmaceuticals5.03%-0.19 ppHealth Care Distributors0.44%+0.05 ppHealth Care Services0.68%-0.03 ppHealth Care Facilities0.24%-0.03 ppHealth Care Supplies0.19%-0.00 ppHealth Care Technology0.00%+0.00 pp
3 · Sub-industry
Inside Health Care Supplies
Health Care Supplies · weight
0.19%
Industry change · 12M
-0.00 pp
Health Care Supplies · contribution
-0.003 pp
Company participation
33%
of industry constituents above their 6M weight average
4 · Companies driving this sub-industry
Apr 2024 · 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 | $17.7bn | 0.051% | +0.038 pp | +0.035 pp | -6.6% | Yes |
| Align Technology → ALGN | United States | $21.2bn | 0.061% | +0.001 pp | -0.023 pp | -13.2% | No |
| West Pharmaceutical Services → WST | United States | $26.0bn | 0.075% | -0.007 pp | -0.015 pp | -0.8% | 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.