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
Biotechnology2.47%-0.61 ppPharmaceuticals5.81%+0.39 ppLife Sciences Tools & Services1.83%+0.29 ppHealth Care Services0.92%+0.27 ppHealth Care Equipment3.30%+0.23 ppHealth Care Distributors0.36%-0.07 ppManaged Health Care2.09%+0.03 ppHealth Care Supplies0.15%-0.02 ppHealth Care Facilities0.24%+0.02 ppHealth Care Technology0.00%+0.00 pp
3 · Sub-industry
Inside Health Care Distributors
Health Care Distributors · weight
0.36%
Industry change · 12M
-0.07 pp
Health Care Distributors · contribution
-0.073 pp
Company participation
100%
of industry constituents above their 6M weight average
4 · Companies driving this sub-industry
May 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 | $23.2bn | 0.135% | -0.006 pp | -0.039 pp | -12.9% | Yes |
| Cardinal Health → CAH | United States | $12.5bn | 0.073% | -0.021 pp | -0.025 pp | -16.0% | Yes |
| Cencora → COR | United States | $16.4bn | 0.095% | -0.007 pp | -0.014 pp | -2.0% | Yes |
| Henry Schein → HSIC | United States | $9.6bn | 0.056% | +0.004 pp | +0.005 pp | +18.8% | 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.