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
Pharmaceuticals5.23%+1.57 ppHealth Care Equipment3.30%+1.42 ppBiotechnology2.62%+0.86 ppLife Sciences Tools & Services1.76%+0.78 ppManaged Health Care2.06%+0.71 ppHealth Care Services1.06%+0.67 ppHealth Care Distributors0.35%+0.12 ppHealth Care Facilities0.24%+0.07 ppHealth Care Supplies0.13%+0.06 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
+0.121 pp
Company participation
25%
of industry constituents above their 6M weight average
4 · Companies driving this sub-industry
Nov 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 | $26.1bn | 0.131% | -0.008 pp | +0.050 pp | +17.6% | No |
| Cencora → COR | United States | $18.1bn | 0.091% | -0.002 pp | +0.029 pp | +5.3% | No |
| Cardinal Health → CAH | United States | $16.1bn | 0.081% | +0.011 pp | +0.027 pp | +4.6% | Yes |
| Henry Schein → HSIC | United States | $10.1bn | 0.051% | +0.001 pp | +0.016 pp | -1.5% | 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.