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
Life Sciences Tools & Services2.30%+0.26 ppPharmaceuticals4.65%-0.21 ppHealth Care Equipment3.22%-0.14 ppHealth Care Services0.79%-0.11 ppHealth Care Distributors0.27%-0.05 ppBiotechnology2.37%+0.02 ppHealth Care Supplies0.29%+0.02 ppHealth Care Facilities0.24%+0.02 ppManaged Health Care2.07%+0.01 ppHealth Care Technology0.00%+0.00 pp
3 · Sub-industry
Inside Health Care Supplies
Health Care Supplies · weight
0.29%
Industry change · 12M
+0.02 pp
Health Care Supplies · contribution
+0.023 pp
Company participation
33%
of industry constituents above their 6M weight average
4 · Companies driving this sub-industry
Nov 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 |
|---|---|---|---|---|---|---|---|
| West Pharmaceutical Services → WST | United States | $32.8bn | 0.111% | -0.001 pp | +0.024 pp | +61.2% | Yes |
| Cooper Companies (The) → COO | United States | $4.6bn | 0.016% | -0.003 pp | -0.003 pp | +12.3% | No |
| Align Technology → ALGN | United States | $48.2bn | 0.163% | -0.024 pp | +0.002 pp | +27.1% | 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.