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 Equipment3.10%+0.28 ppBiotechnology3.11%-0.27 ppManaged Health Care2.11%+0.16 ppHealth Care Distributors0.42%-0.09 ppHealth Care Services0.66%-0.05 ppHealth Care Supplies0.18%+0.05 ppLife Sciences Tools & Services1.55%+0.03 ppHealth Care Facilities0.22%+0.01 ppPharmaceuticals5.50%+0.00 ppHealth Care Technology0.00%+0.00 pp
3 · Sub-industry
Inside Health Care Distributors
Health Care Distributors · weight
0.42%
Industry change · 12M
-0.09 pp
Health Care Distributors · contribution
-0.086 pp
Company participation
25%
of industry constituents above their 6M weight average
4 · Companies driving this sub-industry
Jun 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 |
|---|---|---|---|---|---|---|---|
| Cardinal Health → CAH | United States | $15.2bn | 0.092% | -0.029 pp | -0.039 pp | -30.8% | No |
| McKesson Corporation → MCK | United States | $27.0bn | 0.164% | -0.015 pp | -0.037 pp | -20.6% | No |
| Cencora → COR | United States | $18.7bn | 0.114% | -0.002 pp | -0.010 pp | -13.7% | No |
| Henry Schein → HSIC | United States | $8.8bn | 0.053% | +0.004 pp | +0.000 pp | -4.0% | Yes |
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.