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
Biotechnology2.40%-0.71 ppLife Sciences Tools & Services1.90%+0.35 ppHealth Care Services0.91%+0.25 ppHealth Care Equipment3.33%+0.23 ppManaged Health Care1.95%-0.16 ppPharmaceuticals5.61%+0.11 ppHealth Care Distributors0.37%-0.06 ppHealth Care Supplies0.14%-0.04 ppHealth Care Facilities0.25%+0.03 ppHealth Care Technology0.00%+0.00 pp
3 · Sub-industry
Inside Health Care Distributors
Health Care Distributors · weight
0.37%
Industry change · 12M
-0.06 pp
Health Care Distributors · contribution
-0.056 pp
Company participation
75%
of industry constituents above their 6M weight average
4 · Companies driving this sub-industry
Jun 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 | $25.5bn | 0.138% | +0.009 pp | -0.026 pp | +2.0% | Yes |
| Cencora → COR | United States | $17.9bn | 0.097% | +0.000 pp | -0.017 pp | +4.9% | Yes |
| Cardinal Health → CAH | United States | $14.0bn | 0.076% | -0.007 pp | -0.016 pp | +0.4% | No |
| Henry Schein → HSIC | United States | $10.4bn | 0.056% | +0.004 pp | +0.003 pp | +22.7% | 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.