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
Health Care Equipment2.88%+0.05 ppPharmaceuticals5.54%+0.04 ppHealth Care Services0.66%-0.04 ppBiotechnology3.42%+0.04 ppHealth Care Distributors0.49%-0.02 ppHealth Care Supplies0.14%+0.01 ppLife Sciences Tools & Services1.51%-0.01 ppManaged Health Care1.95%-0.00 ppHealth Care Facilities0.21%+0.00 ppHealth Care Technology0.00%+0.00 pp
3 · Sub-industry
Inside Health Care Services
Health Care Services · weight
0.66%
Industry change · 12M
-0.04 pp
Health Care Services · contribution
-0.041 pp
Company participation
50%
of industry constituents above their 6M weight average
4 · Companies driving this sub-industry
Feb 2018 · 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 |
|---|---|---|---|---|---|---|---|
| CVS Health → CVS | United States | $68.7bn | 0.412% | -0.043 pp | -0.043 pp | -13.9% | No |
| Labcorp → LH | United States | $15.1bn | 0.091% | +0.004 pp | +0.004 pp | -1.0% | Yes |
| DaVita → DVA | United States | $13.1bn | 0.079% | -0.003 pp | -0.003 pp | -7.7% | No |
| Quest Diagnostics → DGX | United States | $14.0bn | 0.084% | +0.001 pp | +0.001 pp | -2.6% | 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.