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
Pharmaceuticals5.34%+1.80 ppHealth Care Equipment3.37%+1.57 ppBiotechnology2.48%+0.86 ppLife Sciences Tools & Services1.74%+0.81 ppManaged Health Care1.93%+0.64 ppHealth Care Services0.99%+0.61 ppHealth Care Distributors0.34%+0.11 ppHealth Care Facilities0.24%+0.08 ppHealth Care Supplies0.12%+0.05 ppHealth Care Technology0.00%+0.00 pp
3 · Sub-industry
Inside Managed Health Care
Managed Health Care · weight
1.93%
Industry change · 12M
+0.64 pp
Managed Health Care · contribution
+0.636 pp
Company participation
75%
of industry constituents above their 6M weight average
4 · Companies driving this sub-industry
Oct 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 | $239.5bn | 1.248% | -0.011 pp | +0.396 pp | -1.7% | Yes |
| Elevance Health → ELV | United States | $68.2bn | 0.356% | -0.045 pp | +0.114 pp | -1.2% | No |
| Centene Corporation → CNC | United States | $22.0bn | 0.114% | -0.000 pp | +0.069 pp | -18.5% | Yes |
| Humana → HUM | United States | $39.7bn | 0.207% | -0.006 pp | +0.058 pp | -7.4% | 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.