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
Pharmaceuticals5.42%+1.76 ppHealth Care Equipment3.35%+1.46 ppLife Sciences Tools & Services1.80%+0.83 ppManaged Health Care2.11%+0.83 ppBiotechnology2.55%+0.78 ppHealth Care Services1.04%+0.69 ppHealth Care Distributors0.33%+0.11 ppHealth Care Facilities0.25%+0.09 ppHealth Care Supplies0.13%+0.06 ppHealth Care Technology0.00%+0.00 pp
3 · Sub-industry
Inside Managed Health Care
Managed Health Care · weight
2.11%
Industry change · 12M
+0.83 pp
Managed Health Care · contribution
+0.825 pp
Company participation
100%
of industry constituents above their 6M weight average
4 · Companies driving this sub-industry
Dec 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 |
|---|---|---|---|---|---|---|---|
| UnitedHealth Group → UNH | United States | $278.5bn | 1.366% | +0.273 pp | +0.510 pp | +20.0% | Yes |
| Elevance Health → ELV | United States | $76.6bn | 0.376% | +0.049 pp | +0.133 pp | +16.3% | Yes |
| Humana → HUM | United States | $48.5bn | 0.238% | +0.055 pp | +0.098 pp | +28.9% | Yes |
| Centene Corporation → CNC | United States | $26.0bn | 0.128% | +0.033 pp | +0.085 pp | +9.1% | 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.