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
Pharmaceuticals4.62%+4.62 ppHealth Care Equipment3.09%+3.08 ppBiotechnology2.51%+2.51 ppLife Sciences Tools & Services2.28%+2.27 ppManaged Health Care1.92%+1.91 ppHealth Care Services0.82%+0.82 ppHealth Care Supplies0.31%+0.31 ppHealth Care Distributors0.28%+0.28 ppHealth Care Facilities0.27%+0.27 ppHealth Care Technology0.00%+0.00 pp
3 · Sub-industry
Inside Health Care Supplies
Health Care Supplies · weight
0.31%
Industry change · 12M
+0.31 pp
Health Care Supplies · contribution
+0.312 pp
Company participation
100%
of industry constituents above their 6M weight average
4 · Companies driving this sub-industry
Sep 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 | $52.6bn | 0.185% | +0.014 pp | +0.184 pp | +103.3% | Yes |
| West Pharmaceutical Services → WST | United States | $31.4bn | 0.110% | +0.017 pp | +0.110 pp | +54.8% | Yes |
| Cooper Companies (The) → COO | United States | $5.1bn | 0.018% | +0.001 pp | +0.018 pp | +22.6% | 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.