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 Care0.70%-0.62 ppHealth Care Equipment2.38%+0.59 ppLife Sciences Tools & Services0.93%-0.14 ppBiotechnology1.78%+0.14 ppPharmaceuticals3.35%+0.13 ppHealth Care Distributors0.40%+0.11 ppHealth Care Services0.42%+0.03 ppHealth Care Supplies0.09%-0.02 ppHealth Care Facilities0.18%+0.01 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
-0.019 pp
Company participation
33%
of industry constituents above their 6M weight average
4 · Companies driving this sub-industry
Jul 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 |
|---|---|---|---|---|---|---|---|
| Align Technology → ALGN | United States | $9.4bn | 0.020% | -0.011 pp | -0.012 pp | -44.4% | No |
| Cooper Companies (The) → COO | United States | $14.1bn | 0.030% | -0.009 pp | -0.004 pp | -24.3% | No |
| West Pharmaceutical Services → WST | United States | $17.2bn | 0.036% | -0.000 pp | -0.004 pp | -21.6% | 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.