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
Pharmaceuticals3.88%-1.03 ppBiotechnology1.85%-0.66 ppManaged Health Care1.46%-0.55 ppLife Sciences Tools & Services1.21%-0.43 ppHealth Care Equipment2.62%-0.39 ppHealth Care Services0.46%-0.22 ppHealth Care Distributors0.37%-0.08 ppHealth Care Facilities0.19%-0.06 ppHealth Care Technology0.03%+0.03 ppHealth Care Supplies0.13%-0.02 pp
3 · Sub-industry
Inside Health Care Distributors
Health Care Distributors · weight
0.37%
Industry change · 12M
-0.08 pp
Health Care Distributors · contribution
-0.079 pp
Company participation
100%
of industry constituents above their 6M weight average
4 · Companies driving this sub-industry
Jan 2025 · 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 | $75.5bn | 0.168% | +0.015 pp | -0.030 pp | +19.5% | Yes |
| Cencora → COR | United States | $49.1bn | 0.109% | +0.004 pp | -0.029 pp | +10.2% | Yes |
| Cardinal Health → CAH | United States | $29.9bn | 0.066% | +0.004 pp | -0.014 pp | +15.4% | Yes |
| Henry Schein → HSIC | United States | $10.0bn | 0.022% | +0.001 pp | -0.007 pp | +6.9% | 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.