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
Biotechnology2.84%-0.58 ppPharmaceuticals6.10%+0.56 ppHealth Care Equipment3.33%+0.45 ppHealth Care Services1.01%+0.35 ppLife Sciences Tools & Services1.82%+0.32 ppManaged Health Care2.16%+0.22 ppHealth Care Distributors0.39%-0.10 ppHealth Care Facilities0.28%+0.07 ppHealth Care Supplies0.14%-0.00 ppHealth Care Technology0.00%+0.00 pp
3 · Sub-industry
Inside Managed Health Care
Managed Health Care · weight
2.16%
Industry change · 12M
+0.22 pp
Managed Health Care · contribution
+0.216 pp
Company participation
100%
of industry constituents above their 6M weight average
4 · Companies driving this sub-industry
Feb 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 |
|---|---|---|---|---|---|---|---|
| Centene Corporation → CNC | United States | $25.2bn | 0.146% | +0.097 pp | +0.093 pp | +20.1% | Yes |
| Elevance Health → ELV | United States | $77.3bn | 0.448% | +0.199 pp | +0.087 pp | +29.3% | Yes |
| UnitedHealth Group → UNH | United States | $232.4bn | 1.347% | +0.448 pp | +0.036 pp | +8.5% | Yes |
| Humana → HUM | United States | $38.6bn | 0.224% | +0.074 pp | -0.000 pp | +5.6% | 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.