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
Pharmaceuticals5.24%+1.87 ppHealth Care Equipment3.42%+1.56 ppLife Sciences Tools & Services1.79%+0.84 ppBiotechnology2.32%+0.57 ppHealth Care Services0.94%+0.55 ppManaged Health Care1.70%+0.46 ppHealth Care Distributors0.35%+0.12 ppHealth Care Facilities0.22%+0.06 ppHealth Care Supplies0.10%-0.01 ppHealth Care Technology0.00%+0.00 pp
3 · Sub-industry
Inside Health Care Distributors
Health Care Distributors · weight
0.35%
Industry change · 12M
+0.12 pp
Health Care Distributors · contribution
+0.116 pp
Company participation
25%
of industry constituents above their 6M weight average
4 · Companies driving this sub-industry
Sep 2019 · 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 | $25.3bn | 0.134% | -0.003 pp | +0.050 pp | +4.3% | No |
| Cencora → COR | United States | $17.2bn | 0.091% | -0.005 pp | +0.028 pp | -4.9% | No |
| Cardinal Health → CAH | United States | $14.1bn | 0.075% | -0.001 pp | +0.022 pp | -8.9% | Yes |
| Henry Schein → HSIC | United States | $9.4bn | 0.050% | -0.006 pp | +0.017 pp | -4.8% | 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.