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
Health Care Equipment1.52%-1.15 ppPharmaceuticals3.09%-1.07 ppManaged Health Care0.52%-0.79 ppBiotechnology1.47%-0.57 ppLife Sciences Tools & Services0.66%-0.42 ppHealth Care Services0.32%-0.17 ppHealth Care Supplies0.07%-0.04 ppHealth Care Distributors0.35%-0.03 ppHealth Care Technology0.02%-0.01 ppHealth Care Facilities0.16%-0.01 pp
3 · Sub-industry
Inside Managed Health Care
Managed Health Care · weight
0.52%
Industry change · 12M
-0.79 pp
Managed Health Care · contribution
-0.787 pp
Company participation
0%
of industry constituents above their 6M weight average
4 · Companies driving this sub-industry
Feb 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 | $265.7bn | 0.365% | -0.222 pp | -0.607 pp | -36.7% | No |
| Elevance Health → ELV | United States | $70.6bn | 0.097% | -0.051 pp | -0.105 pp | -17.8% | No |
| Humana → HUM | United States | $23.0bn | 0.032% | -0.027 pp | -0.041 pp | -28.6% | No |
| Centene Corporation → CNC | United States | $22.1bn | 0.030% | -0.008 pp | -0.034 pp | -22.8% | 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.