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 Equipment1.51%-1.12 ppPharmaceuticals3.80%+0.22 ppBiotechnology1.68%-0.18 ppLife Sciences Tools & Services0.80%-0.12 ppHealth Care Distributors0.34%-0.09 ppManaged Health Care0.86%-0.08 ppHealth Care Services0.42%-0.07 ppHealth Care Facilities0.15%-0.06 ppHealth Care Technology0.07%+0.04 ppHealth Care Supplies0.08%-0.01 pp
3 · Sub-industry
Inside Managed Health Care
Managed Health Care · weight
0.86%
Industry change · 12M
-0.08 pp
Managed Health Care · contribution
-0.083 pp
Company participation
100%
of industry constituents above their 6M weight average
4 · Companies driving this sub-industry
May 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 |
|---|---|---|---|---|---|---|---|
| Elevance Health → ELV | United States | $85.4bn | 0.148% | +0.051 pp | -0.049 pp | +4.6% | Yes |
| UnitedHealth Group → UNH | United States | $345.4bn | 0.599% | +0.234 pp | -0.022 pp | +29.5% | Yes |
| Centene Corporation → CNC | United States | $29.4bn | 0.051% | +0.021 pp | -0.013 pp | +5.6% | Yes |
| Humana → HUM | United States | $36.7bn | 0.064% | +0.032 pp | -0.000 pp | +33.1% | 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.