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
Pharmaceuticals4.18%-0.85 ppLife Sciences Tools & Services1.10%-0.54 ppManaged Health Care1.52%-0.31 ppHealth Care Equipment2.69%-0.28 ppBiotechnology2.15%-0.21 ppHealth Care Services0.54%-0.16 ppHealth Care Supplies0.11%-0.10 ppHealth Care Facilities0.20%-0.04 ppHealth Care Technology0.03%+0.03 ppHealth Care Distributors0.43%-0.00 pp
3 · Sub-industry
Inside Managed Health Care
Managed Health Care · weight
1.52%
Industry change · 12M
-0.31 pp
Managed Health Care · contribution
-0.312 pp
Company participation
100%
of industry constituents above their 6M weight average
4 · Companies driving this sub-industry
Mar 2025 · 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 | $479.1bn | 1.137% | +0.082 pp | -0.127 pp | +7.6% | Yes |
| Elevance Health → ELV | United States | $98.9bn | 0.235% | +0.041 pp | -0.100 pp | -14.9% | Yes |
| Centene Corporation → CNC | United States | $30.1bn | 0.071% | +0.002 pp | -0.045 pp | -22.6% | Yes |
| Humana → HUM | United States | $31.9bn | 0.076% | +0.007 pp | -0.040 pp | -22.8% | 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.