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
Pharmaceuticals4.61%+4.60 ppHealth Care Equipment3.14%+3.13 ppManaged Health Care2.10%+2.10 ppBiotechnology2.08%+2.07 ppLife Sciences Tools & Services2.00%+2.00 ppHealth Care Services0.92%+0.91 ppHealth Care Distributors0.29%+0.29 ppHealth Care Supplies0.28%+0.28 ppHealth Care Facilities0.25%+0.25 ppHealth Care Technology0.00%+0.00 pp
3 · Sub-industry
Inside Health Care Supplies
Health Care Supplies · weight
0.28%
Industry change · 12M
+0.28 pp
Health Care Supplies · contribution
+0.276 pp
Company participation
100%
of industry constituents above their 6M weight average
4 · Companies driving this sub-industry
May 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 | $46.7bn | 0.167% | +0.078 pp | +0.167 pp | +140.3% | Yes |
| West Pharmaceutical Services → WST | United States | $25.7bn | 0.092% | +0.050 pp | +0.092 pp | +61.2% | Yes |
| Cooper Companies (The) → COO | United States | $4.8bn | 0.017% | +0.008 pp | +0.017 pp | +24.1% | 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.