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
Pharmaceuticals2.37%+2.37 ppHealth Care Equipment1.67%+1.66 ppBiotechnology1.11%+1.10 ppLife Sciences Tools & Services0.99%+0.99 ppManaged Health Care0.94%+0.94 ppHealth Care Services0.42%+0.42 ppHealth Care Distributors0.14%+0.14 ppHealth Care Supplies0.14%+0.14 ppHealth Care Facilities0.12%+0.12 ppHealth Care Technology0.00%+0.00 pp
3 · Sub-industry
Inside Health Care Supplies
Health Care Supplies · weight
0.14%
Industry change · 12M
+0.14 pp
Health Care Supplies · contribution
+0.141 pp
Company participation
0%
of industry constituents above their 6M weight average
4 · Companies driving this sub-industry
Feb 2021 · 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 | $44.9bn | 0.090% | -0.071 pp | +0.090 pp | +159.7% | No |
| West Pharmaceutical Services → WST | United States | $20.8bn | 0.042% | -0.045 pp | +0.042 pp | +86.9% | No |
| Cooper Companies (The) → COO | United States | $4.7bn | 0.009% | -0.010 pp | +0.009 pp | +19.0% | 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.