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
Biotechnology2.47%-0.61 ppPharmaceuticals5.81%+0.39 ppLife Sciences Tools & Services1.83%+0.29 ppHealth Care Services0.92%+0.27 ppHealth Care Equipment3.30%+0.23 ppHealth Care Distributors0.36%-0.07 ppManaged Health Care2.09%+0.03 ppHealth Care Supplies0.15%-0.02 ppHealth Care Facilities0.24%+0.02 ppHealth Care Technology0.00%+0.00 pp
3 · Sub-industry
Inside Managed Health Care
Managed Health Care · weight
2.09%
Industry change · 12M
+0.03 pp
Managed Health Care · contribution
+0.029 pp
Company participation
100%
of industry constituents above their 6M weight average
4 · Companies driving this sub-industry
May 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 |
|---|---|---|---|---|---|---|---|
| Centene Corporation → CNC | United States | $23.9bn | 0.139% | -0.007 pp | +0.076 pp | -1.4% | Yes |
| Elevance Health → ELV | United States | $71.5bn | 0.416% | -0.032 pp | +0.074 pp | +27.0% | Yes |
| UnitedHealth Group → UNH | United States | $229.8bn | 1.338% | -0.009 pp | -0.070 pp | +1.5% | Yes |
| Humana → HUM | United States | $33.1bn | 0.193% | -0.031 pp | -0.051 pp | -15.3% | 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.