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
Latest available · not live
20182026
1 · Sector
Weight and 12M allocation change
2 · Industry
Inside Health Care
Health Care Equipment1.52%-0.74 ppPharmaceuticals4.07%+0.69 ppBiotechnology2.04%+0.24 ppLife Sciences Tools & Services1.07%+0.17 ppHealth Care Technology0.10%+0.08 ppHealth Care Services0.41%-0.05 ppManaged Health Care0.82%-0.05 ppHealth Care Facilities0.16%-0.04 ppHealth Care Distributors0.37%-0.04 ppHealth Care Supplies0.08%-0.00 pp
3 · Sub-industry
Inside Managed Health Care
Managed Health Care · weight
0.82%
Industry change · 12M
-0.05 pp
Managed Health Care · contribution
-0.046 pp
Company participation
75%
of industry constituents above their 6M weight average
4 · Companies driving this sub-industry
Sep 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 | $329.5bn | 0.554% | -0.102 pp | -0.073 pp | +9.1% | No |
| Centene Corporation → CNC | United States | $30.7bn | 0.052% | -0.004 pp | +0.016 pp | +74.1% | Yes |
| Humana → HUM | United States | $45.8bn | 0.077% | -0.006 pp | +0.014 pp | +48.3% | Yes |
| Elevance Health → ELV | United States | $84.3bn | 0.142% | -0.004 pp | -0.004 pp | +22.7% | 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.