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
Biotechnology2.68%+0.35 ppPharmaceuticals5.20%+0.34 ppHealth Care Equipment2.94%-0.23 ppManaged Health Care2.37%+0.19 ppLife Sciences Tools & Services2.00%-0.11 ppHealth Care Distributors0.41%+0.10 ppHealth Care Supplies0.15%-0.09 ppHealth Care Services0.88%-0.02 ppHealth Care Facilities0.25%-0.00 ppHealth Care Technology0.00%+0.00 pp
3 · Sub-industry
Inside Health Care Distributors
Health Care Distributors · weight
0.41%
Industry change · 12M
+0.10 pp
Health Care Distributors · contribution
+0.101 pp
Company participation
50%
of industry constituents above their 6M weight average
4 · Companies driving this sub-industry
Jan 2023 · 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 | $53.7bn | 0.184% | -0.015 pp | +0.052 pp | +48.4% | No |
| Cencora → COR | United States | $34.7bn | 0.119% | +0.003 pp | +0.024 pp | +25.6% | Yes |
| Cardinal Health → CAH | United States | $20.2bn | 0.069% | -0.004 pp | +0.020 pp | +54.6% | No |
| Henry Schein → HSIC | United States | $11.7bn | 0.040% | +0.007 pp | +0.005 pp | +14.4% | 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.