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
Pharmaceuticals4.24%-0.80 ppLife Sciences Tools & Services1.01%-0.64 ppManaged Health Care1.28%-0.59 ppHealth Care Equipment2.70%-0.22 ppBiotechnology2.07%-0.21 ppHealth Care Services0.55%-0.13 ppHealth Care Supplies0.11%-0.08 ppHealth Care Facilities0.21%-0.03 ppHealth Care Technology0.03%+0.03 ppHealth Care Distributors0.45%+0.01 pp
3 · Sub-industry
Inside Health Care Supplies
Health Care Supplies · weight
0.11%
Industry change · 12M
-0.08 pp
Health Care Supplies · contribution
-0.082 pp
Company participation
0%
of industry constituents above their 6M weight average
4 · Companies driving this sub-industry
Apr 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 | $15.2bn | 0.036% | -0.019 pp | -0.039 pp | -40.7% | No |
| Align Technology → ALGN | United States | $12.8bn | 0.031% | -0.006 pp | -0.031 pp | -38.6% | No |
| Cooper Companies (The) → COO | United States | $16.3bn | 0.039% | -0.004 pp | -0.012 pp | -8.3% | 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.