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
Managed Health Care0.83%-0.76 ppPharmaceuticals4.11%+0.25 ppHealth Care Equipment2.35%-0.12 ppHealth Care Distributors0.47%+0.10 ppLife Sciences Tools & Services1.06%-0.10 ppBiotechnology1.94%+0.09 ppHealth Care Supplies0.09%-0.05 ppHealth Care Facilities0.23%+0.04 ppHealth Care Services0.45%-0.04 ppHealth Care Technology0.03%+0.00 pp
3 · Sub-industry
Inside Health Care Services
Health Care Services · weight
0.45%
Industry change · 12M
-0.04 pp
Health Care Services · contribution
-0.041 pp
Company participation
40%
of industry constituents above their 6M weight average
4 · Companies driving this sub-industry
Nov 2025 · 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 |
|---|---|---|---|---|---|---|---|
| Cigna → CI | United States | $74.1bn | 0.145% | -0.021 pp | -0.062 pp | -16.3% | No |
| CVS Health → CVS | United States | $102.0bn | 0.200% | +0.008 pp | +0.034 pp | +40.0% | Yes |
| DaVita → DVA | United States | $8.4bn | 0.017% | -0.004 pp | -0.013 pp | -28.0% | No |
| Quest Diagnostics → DGX | United States | $21.0bn | 0.041% | -0.001 pp | +0.001 pp | +18.5% | Yes |
| Labcorp → LH | United States | $22.3bn | 0.044% | -0.004 pp | -0.001 pp | +12.7% | No |
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.