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
Pharmaceuticals3.42%-1.35 ppManaged Health Care0.84%-1.00 ppLife Sciences Tools & Services0.96%-0.47 ppBiotechnology1.80%-0.46 ppHealth Care Equipment2.41%-0.19 ppHealth Care Services0.47%-0.07 ppHealth Care Supplies0.09%-0.06 ppHealth Care Facilities0.20%-0.05 ppHealth Care Distributors0.39%+0.01 ppHealth Care Technology0.03%-0.00 pp
3 · Sub-industry
Inside Managed Health Care
Managed Health Care · weight
0.84%
Industry change · 12M
-1.00 pp
Managed Health Care · contribution
-0.996 pp
Company participation
25%
of industry constituents above their 6M weight average
4 · Companies driving this sub-industry
Aug 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 |
|---|---|---|---|---|---|---|---|
| UnitedHealth Group → UNH | United States | $280.6bn | 0.582% | -0.039 pp | -0.735 pp | -46.5% | No |
| Elevance Health → ELV | United States | $71.8bn | 0.149% | -0.048 pp | -0.163 pp | -41.9% | No |
| Centene Corporation → CNC | United States | $14.3bn | 0.030% | -0.034 pp | -0.071 pp | -63.2% | No |
| Humana → HUM | United States | $36.5bn | 0.076% | +0.012 pp | -0.027 pp | -13.2% | 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.