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
Pharmaceuticals2.94%-2.47 ppHealth Care Equipment1.97%-1.40 ppBiotechnology1.37%-1.01 ppManaged Health Care1.14%-0.81 ppLife Sciences Tools & Services1.26%-0.50 ppHealth Care Services0.53%-0.46 ppHealth Care Distributors0.18%-0.16 ppHealth Care Facilities0.13%-0.10 ppHealth Care Supplies0.16%+0.04 ppHealth Care Technology0.00%+0.00 pp
3 · Sub-industry
Inside Managed Health Care
Managed Health Care · weight
1.14%
Industry change · 12M
-0.81 pp
Managed Health Care · contribution
-0.813 pp
Company participation
0%
of industry constituents above their 6M weight average
4 · Companies driving this sub-industry
Jan 2021 · 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 | $316.5bn | 0.758% | -0.615 pp | -0.515 pp | +24.5% | No |
| Elevance Health → ELV | United States | $73.9bn | 0.177% | -0.144 pp | -0.155 pp | +13.5% | No |
| Humana → HUM | United States | $50.7bn | 0.121% | -0.129 pp | -0.098 pp | +14.7% | No |
| Centene Corporation → CNC | United States | $35.0bn | 0.084% | -0.078 pp | -0.044 pp | -4.0% | 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.