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
Pharmaceuticals4.70%-1.12 ppManaged Health Care2.07%-0.56 ppBiotechnology2.40%-0.49 ppLife Sciences Tools & Services1.64%-0.40 ppHealth Care Services0.70%-0.26 ppHealth Care Equipment2.89%-0.16 ppHealth Care Facilities0.22%-0.03 ppHealth Care Supplies0.15%+0.02 ppHealth Care Distributors0.41%-0.02 ppHealth Care Technology0.00%+0.00 pp
3 · Sub-industry
Inside Managed Health Care
Managed Health Care · weight
2.07%
Industry change · 12M
-0.56 pp
Managed Health Care · contribution
-0.562 pp
Company participation
50%
of industry constituents above their 6M weight average
4 · Companies driving this sub-industry
Dec 2023 · 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 | $486.9bn | 1.452% | -0.108 pp | -0.335 pp | +0.8% | No |
| Elevance Health → ELV | United States | $110.8bn | 0.330% | -0.012 pp | -0.112 pp | -6.9% | Yes |
| Humana → HUM | United States | $56.4bn | 0.168% | -0.033 pp | -0.066 pp | -9.9% | No |
| Centene Corporation → CNC | United States | $39.6bn | 0.118% | -0.006 pp | -0.049 pp | -9.5% | 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.