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
Pharmaceuticals3.66%-1.84 ppBiotechnology1.77%-1.61 ppHealth Care Equipment1.89%-0.94 ppManaged Health Care1.28%-0.67 ppLife Sciences Tools & Services0.97%-0.54 ppHealth Care Services0.35%-0.36 ppHealth Care Distributors0.21%-0.29 ppHealth Care Supplies0.07%-0.07 ppHealth Care Facilities0.15%-0.05 ppHealth Care Technology0.00%+0.00 pp
3 · Sub-industry
Inside Health Care Distributors
Health Care Distributors · weight
0.21%
Industry change · 12M
-0.29 pp
Health Care Distributors · contribution
-0.294 pp
Company participation
0%
of industry constituents above their 6M weight average
4 · Companies driving this sub-industry
Dec 2018 · 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 | $21.6bn | 0.077% | -0.007 pp | -0.124 pp | -33.9% | No |
| Cardinal Health → CAH | United States | $13.3bn | 0.048% | -0.006 pp | -0.084 pp | -35.6% | No |
| Cencora → COR | United States | $15.8bn | 0.056% | -0.007 pp | -0.068 pp | -24.1% | No |
| Henry Schein → HSIC | United States | $9.4bn | 0.034% | +0.001 pp | -0.020 pp | +3.8% | 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.