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
Pharmaceuticals6.10%+0.50 ppBiotechnology2.70%-0.49 ppHealth Care Equipment3.38%+0.45 ppLife Sciences Tools & Services1.87%+0.34 ppHealth Care Services0.95%+0.32 ppManaged Health Care2.12%+0.22 ppHealth Care Distributors0.36%-0.11 ppHealth Care Facilities0.26%+0.05 ppHealth Care Supplies0.15%+0.01 ppHealth Care Technology0.00%+0.00 pp
3 · Sub-industry
Inside Managed Health Care
Managed Health Care · weight
2.12%
Industry change · 12M
+0.22 pp
Managed Health Care · contribution
+0.221 pp
Company participation
100%
of industry constituents above their 6M weight average
4 · Companies driving this sub-industry
Mar 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 | $237.3bn | 1.363% | +0.506 pp | +0.092 pp | +17.2% | Yes |
| Elevance Health → ELV | United States | $73.8bn | 0.424% | +0.181 pp | +0.079 pp | +32.1% | Yes |
| Centene Corporation → CNC | United States | $21.9bn | 0.126% | +0.084 pp | +0.069 pp | -0.6% | Yes |
| Humana → HUM | United States | $36.1bn | 0.207% | +0.067 pp | -0.020 pp | -0.4% | 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.