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
Pharmaceuticals3.38%-2.13 ppBiotechnology1.66%-1.72 ppHealth Care Equipment1.82%-1.01 ppManaged Health Care1.30%-0.65 ppLife Sciences Tools & Services0.96%-0.55 ppHealth Care Services0.33%-0.38 ppHealth Care Distributors0.22%-0.29 ppHealth Care Supplies0.08%-0.06 ppHealth Care Facilities0.16%-0.05 ppHealth Care Technology0.00%+0.00 pp
3 · Sub-industry
Inside Managed Health Care
Managed Health Care · weight
1.30%
Industry change · 12M
-0.65 pp
Managed Health Care · contribution
-0.654 pp
Company participation
50%
of industry constituents above their 6M weight average
4 · Companies driving this sub-industry
Jan 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 | $259.9bn | 0.857% | +0.005 pp | -0.451 pp | +15.7% | Yes |
| Elevance Health → ELV | United States | $78.4bn | 0.258% | +0.017 pp | -0.105 pp | +23.7% | Yes |
| Humana → HUM | United States | $42.4bn | 0.140% | -0.010 pp | -0.090 pp | +10.4% | No |
| Centene Corporation → CNC | United States | $13.4bn | 0.044% | -0.001 pp | -0.009 pp | +21.8% | No |
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.