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 Care1.83%-0.37 ppBiotechnology2.35%-0.34 ppLife Sciences Tools & Services1.64%-0.32 ppHealth Care Equipment2.96%-0.17 ppHealth Care Distributors0.43%+0.05 ppPharmaceuticals5.03%+0.03 ppHealth Care Services0.70%-0.02 ppHealth Care Supplies0.20%+0.01 ppHealth Care Facilities0.24%-0.00 ppHealth Care Technology0.00%+0.00 pp
3 · Sub-industry
Inside Health Care Distributors
Health Care Distributors · weight
0.43%
Industry change · 12M
+0.05 pp
Health Care Distributors · contribution
+0.053 pp
Company participation
25%
of industry constituents above their 6M weight average
4 · Companies driving this sub-industry
Mar 2024 · 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 |
|---|---|---|---|---|---|---|---|
| McKesson Corporation → MCK | United States | $70.5bn | 0.196% | +0.012 pp | +0.029 pp | +51.6% | No |
| Cencora → COR | United States | $48.5bn | 0.134% | +0.011 pp | +0.024 pp | +53.3% | Yes |
| Henry Schein → HSIC | United States | $9.7bn | 0.027% | -0.002 pp | -0.010 pp | -7.4% | No |
| Cardinal Health → CAH | United States | $27.2bn | 0.075% | +0.001 pp | +0.009 pp | +51.3% | 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.