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
Pharmaceuticals4.87%+1.93 ppHealth Care Equipment3.17%+1.20 ppManaged Health Care2.18%+1.04 ppBiotechnology2.33%+0.96 ppLife Sciences Tools & Services2.10%+0.84 ppHealth Care Services0.90%+0.37 ppHealth Care Distributors0.31%+0.13 ppHealth Care Facilities0.25%+0.12 ppHealth Care Supplies0.25%+0.08 ppHealth Care Technology0.00%+0.00 pp
3 · Sub-industry
Inside Health Care Distributors
Health Care Distributors · weight
0.31%
Industry change · 12M
+0.13 pp
Health Care Distributors · contribution
+0.133 pp
Company participation
75%
of industry constituents above their 6M weight average
4 · Companies driving this sub-industry
Jan 2022 · 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 | $39.2bn | 0.132% | +0.024 pp | +0.065 pp | +48.5% | Yes |
| Cencora → COR | United States | $28.3bn | 0.095% | +0.011 pp | +0.044 pp | +38.6% | Yes |
| Henry Schein → HSIC | United States | $10.4bn | 0.035% | -0.001 pp | +0.013 pp | +14.4% | No |
| Cardinal Health → CAH | United States | $14.5bn | 0.049% | +0.002 pp | +0.011 pp | -0.6% | 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.