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
Pharmaceuticals4.24%-0.80 ppLife Sciences Tools & Services1.01%-0.64 ppManaged Health Care1.28%-0.59 ppHealth Care Equipment2.70%-0.22 ppBiotechnology2.07%-0.21 ppHealth Care Services0.55%-0.13 ppHealth Care Supplies0.11%-0.08 ppHealth Care Facilities0.21%-0.03 ppHealth Care Technology0.03%+0.03 ppHealth Care Distributors0.45%+0.01 pp
3 · Sub-industry
Inside Managed Health Care
Managed Health Care · weight
1.28%
Industry change · 12M
-0.59 pp
Managed Health Care · contribution
-0.586 pp
Company participation
75%
of industry constituents above their 6M weight average
4 · Companies driving this sub-industry
Apr 2025 · 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 | $376.3bn | 0.904% | -0.206 pp | -0.388 pp | -13.6% | No |
| Elevance Health → ELV | United States | $95.0bn | 0.228% | +0.024 pp | -0.128 pp | -19.3% | Yes |
| Centene Corporation → CNC | United States | $29.8bn | 0.072% | -0.000 pp | -0.041 pp | -18.1% | Yes |
| Humana → HUM | United States | $31.7bn | 0.076% | -0.003 pp | -0.029 pp | -12.1% | 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.