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
Managed Health Care2.28%-0.26 ppPharmaceuticals5.22%-0.24 ppHealth Care Services0.71%-0.20 ppLife Sciences Tools & Services1.85%-0.19 ppHealth Care Equipment3.34%+0.18 ppBiotechnology2.61%+0.11 ppHealth Care Facilities0.27%+0.03 ppHealth Care Distributors0.39%+0.01 ppHealth Care Supplies0.19%+0.01 ppHealth Care Technology0.00%+0.00 pp
3 · Sub-industry
Inside Health Care Supplies
Health Care Supplies · weight
0.19%
Industry change · 12M
+0.01 pp
Health Care Supplies · contribution
+0.008 pp
Company participation
100%
of industry constituents above their 6M weight average
4 · Companies driving this sub-industry
Apr 2023 · 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 | $26.8bn | 0.091% | +0.023 pp | +0.006 pp | +15.0% | Yes |
| Align Technology → ALGN | United States | $24.9bn | 0.084% | +0.012 pp | +0.002 pp | +12.2% | Yes |
| Cooper Companies (The) → COO | United States | $4.7bn | 0.016% | +0.001 pp | -0.000 pp | +5.7% | 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.