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
Pharmaceuticals4.84%-0.57 ppBiotechnology2.27%-0.29 ppLife Sciences Tools & Services1.98%+0.19 ppHealth Care Services0.85%-0.18 ppHealth Care Supplies0.27%+0.15 ppManaged Health Care2.03%-0.08 ppHealth Care Distributors0.30%-0.03 ppHealth Care Facilities0.23%-0.02 ppHealth Care Equipment3.34%-0.01 ppHealth Care Technology0.00%+0.00 pp
3 · Sub-industry
Inside Health Care Supplies
Health Care Supplies · weight
0.27%
Industry change · 12M
+0.15 pp
Health Care Supplies · contribution
+0.146 pp
Company participation
100%
of industry constituents above their 6M weight average
4 · Companies driving this sub-industry
Dec 2020 · 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 | $20.9bn | 0.085% | +0.085 pp | +0.085 pp | +89.0% | Yes |
| Align Technology → ALGN | United States | $42.1bn | 0.171% | +0.170 pp | +0.063 pp | +91.5% | Yes |
| Cooper Companies (The) → COO | United States | $4.5bn | 0.018% | +0.018 pp | -0.001 pp | +13.1% | 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.