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
Biotechnology3.20%-0.18 ppPharmaceuticals5.60%+0.10 ppHealth Care Equipment2.92%+0.10 ppHealth Care Services0.63%-0.07 ppManaged Health Care1.90%-0.06 ppHealth Care Distributors0.47%-0.04 ppLife Sciences Tools & Services1.53%+0.02 ppHealth Care Facilities0.21%+0.00 ppHealth Care Supplies0.14%+0.00 ppHealth Care Technology0.00%+0.00 pp
3 · Sub-industry
Inside Managed Health Care
Managed Health Care · weight
1.90%
Industry change · 12M
-0.06 pp
Managed Health Care · contribution
-0.055 pp
Company participation
50%
of industry constituents above their 6M weight average
4 · Companies driving this sub-industry
Mar 2018 · 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 | $207.1bn | 1.270% | -0.038 pp | -0.038 pp | -9.3% | No |
| Elevance Health → ELV | United States | $56.2bn | 0.345% | -0.018 pp | -0.018 pp | -11.1% | No |
| Centene Corporation → CNC | United States | $9.3bn | 0.057% | +0.004 pp | +0.004 pp | -0.3% | Yes |
| Humana → HUM | United States | $37.0bn | 0.227% | -0.003 pp | -0.003 pp | -4.4% | 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.