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
Pharmaceuticals4.16%-0.96 ppLife Sciences Tools & Services1.08%-0.59 ppManaged Health Care1.31%-0.57 ppBiotechnology2.04%-0.33 ppHealth Care Equipment2.67%-0.31 ppHealth Care Services0.49%-0.18 ppHealth Care Facilities0.17%-0.07 ppHealth Care Distributors0.38%-0.06 ppHealth Care Supplies0.11%-0.04 ppHealth Care Technology0.03%+0.03 pp
3 · Sub-industry
Inside Health Care Supplies
Health Care Supplies · weight
0.11%
Industry change · 12M
-0.04 pp
Health Care Supplies · contribution
-0.045 pp
Company participation
0%
of industry constituents above their 6M weight average
4 · Companies driving this sub-industry
Feb 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 | $16.8bn | 0.038% | -0.014 pp | -0.038 pp | -35.0% | No |
| Align Technology → ALGN | United States | $13.8bn | 0.031% | -0.008 pp | -0.034 pp | -38.2% | No |
| Cooper Companies (The) → COO | United States | $18.0bn | 0.040% | -0.006 pp | +0.027 pp | -3.4% | 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.