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
Health Care Equipment2.88%+0.05 ppPharmaceuticals5.54%+0.04 ppHealth Care Services0.66%-0.04 ppBiotechnology3.42%+0.04 ppHealth Care Distributors0.49%-0.02 ppHealth Care Supplies0.14%+0.01 ppLife Sciences Tools & Services1.51%-0.01 ppManaged Health Care1.95%-0.00 ppHealth Care Facilities0.21%+0.00 ppHealth Care Technology0.00%+0.00 pp
3 · Sub-industry
Inside Health Care Distributors
Health Care Distributors · weight
0.49%
Industry change · 12M
-0.02 pp
Health Care Distributors · contribution
-0.021 pp
Company participation
25%
of industry constituents above their 6M weight average
4 · Companies driving this sub-industry
Feb 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 | $30.8bn | 0.185% | -0.016 pp | -0.016 pp | -11.4% | No |
| Henry Schein → HSIC | United States | $8.0bn | 0.048% | -0.005 pp | -0.005 pp | -12.5% | No |
| Cencora → COR | United States | $20.9bn | 0.125% | +0.001 pp | +0.001 pp | -4.2% | Yes |
| Cardinal Health → CAH | United States | $21.8bn | 0.131% | -0.001 pp | -0.001 pp | -3.6% | 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.