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
Pharmaceuticals3.37%-2.13 ppBiotechnology1.75%-1.63 ppHealth Care Equipment1.86%-0.96 ppManaged Health Care1.24%-0.72 ppLife Sciences Tools & Services0.95%-0.56 ppHealth Care Services0.39%-0.32 ppHealth Care Distributors0.23%-0.28 ppHealth Care Facilities0.15%-0.05 ppHealth Care Supplies0.11%-0.03 ppHealth Care Technology0.00%+0.00 pp
3 · Sub-industry
Inside Health Care Distributors
Health Care Distributors · weight
0.23%
Industry change · 12M
-0.28 pp
Health Care Distributors · contribution
-0.275 pp
Company participation
0%
of industry constituents above their 6M weight average
4 · Companies driving this sub-industry
Sep 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 | $26.5bn | 0.084% | -0.079 pp | -0.116 pp | -20.9% | No |
| Cardinal Health → CAH | United States | $16.7bn | 0.053% | -0.039 pp | -0.078 pp | -22.8% | No |
| Cencora → COR | United States | $20.0bn | 0.064% | -0.050 pp | -0.060 pp | -6.3% | No |
| Henry Schein → HSIC | United States | $10.2bn | 0.033% | -0.021 pp | -0.021 pp | +12.4% | 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.