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
Pharmaceuticals2.77%-1.46 ppHealth Care Equipment1.24%-1.46 ppBiotechnology1.31%-0.76 ppManaged Health Care0.64%-0.64 ppLife Sciences Tools & Services0.59%-0.41 ppHealth Care Services0.32%-0.23 ppHealth Care Distributors0.29%-0.16 ppHealth Care Facilities0.13%-0.08 ppHealth Care Supplies0.06%-0.04 ppHealth Care Technology0.02%-0.01 pp
3 · Sub-industry
Inside Managed Health Care
Managed Health Care · weight
0.64%
Industry change · 12M
-0.64 pp
Managed Health Care · contribution
-0.638 pp
Company participation
25%
of industry constituents above their 6M weight average
4 · Companies driving this sub-industry
Apr 2026 · 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 | $336.3bn | 0.456% | -0.041 pp | -0.447 pp | -7.4% | No |
| Elevance Health → ELV | United States | $81.7bn | 0.111% | -0.036 pp | -0.117 pp | -8.6% | No |
| Humana → HUM | United States | $28.4bn | 0.039% | -0.006 pp | -0.037 pp | -8.4% | No |
| Centene Corporation → CNC | United States | $26.5bn | 0.036% | -0.005 pp | -0.036 pp | -10.3% | 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.