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
Biotechnology2.84%-0.58 ppPharmaceuticals6.10%+0.56 ppHealth Care Equipment3.33%+0.45 ppHealth Care Services1.01%+0.35 ppLife Sciences Tools & Services1.82%+0.32 ppManaged Health Care2.16%+0.22 ppHealth Care Distributors0.39%-0.10 ppHealth Care Facilities0.28%+0.07 ppHealth Care Supplies0.14%-0.00 ppHealth Care Technology0.00%+0.00 pp
3 · Sub-industry
Inside Health Care Distributors
Health Care Distributors · weight
0.39%
Industry change · 12M
-0.10 pp
Health Care Distributors · contribution
-0.099 pp
Company participation
100%
of industry constituents above their 6M weight average
4 · Companies driving this sub-industry
Feb 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 | $24.4bn | 0.141% | +0.061 pp | -0.043 pp | -13.8% | Yes |
| Cardinal Health → CAH | United States | $16.2bn | 0.094% | +0.040 pp | -0.037 pp | -18.6% | Yes |
| Cencora → COR | United States | $17.6bn | 0.102% | +0.039 pp | -0.023 pp | -10.9% | Yes |
| Henry Schein → HSIC | United States | $9.0bn | 0.052% | +0.017 pp | +0.004 pp | +14.2% | 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.