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
Pharmaceuticals3.54%-1.96 ppBiotechnology1.63%-1.76 ppHealth Care Equipment1.79%-1.03 ppManaged Health Care1.29%-0.66 ppLife Sciences Tools & Services0.93%-0.58 ppHealth Care Services0.38%-0.33 ppHealth Care Distributors0.23%-0.28 ppHealth Care Supplies0.07%-0.07 ppHealth Care Facilities0.16%-0.05 ppHealth Care Technology0.00%+0.00 pp
3 · Sub-industry
Inside Managed Health Care
Managed Health Care · weight
1.29%
Industry change · 12M
-0.66 pp
Managed Health Care · contribution
-0.665 pp
Company participation
0%
of industry constituents above their 6M weight average
4 · Companies driving this sub-industry
Oct 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 | $251.5bn | 0.853% | -0.567 pp | -0.456 pp | +11.5% | No |
| Elevance Health → ELV | United States | $71.3bn | 0.242% | -0.142 pp | -0.121 pp | +12.2% | No |
| Humana → HUM | United States | $44.1bn | 0.150% | -0.103 pp | -0.080 pp | +14.3% | No |
| Centene Corporation → CNC | United States | $13.4bn | 0.045% | -0.033 pp | -0.007 pp | +21.5% | 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.