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
Health Care Equipment2.62%+0.68 ppManaged Health Care0.94%-0.32 ppBiotechnology1.86%+0.26 ppLife Sciences Tools & Services0.91%-0.18 ppPharmaceuticals3.59%+0.17 ppHealth Care Distributors0.43%+0.14 ppHealth Care Services0.49%+0.07 ppHealth Care Facilities0.21%+0.04 ppHealth Care Supplies0.09%-0.02 ppHealth Care Technology0.03%+0.01 pp
3 · Sub-industry
Inside Health Care Services
Health Care Services · weight
0.49%
Industry change · 12M
+0.07 pp
Health Care Services · contribution
+0.073 pp
Company participation
60%
of industry constituents above their 6M weight average
4 · Companies driving this sub-industry
May 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 |
|---|---|---|---|---|---|---|---|
| CVS Health → CVS | United States | $81.0bn | 0.184% | -0.002 pp | +0.041 pp | +12.4% | Yes |
| Labcorp → LH | United States | $20.8bn | 0.047% | +0.000 pp | +0.016 pp | +29.3% | Yes |
| Quest Diagnostics → DGX | United States | $19.4bn | 0.044% | +0.001 pp | +0.014 pp | +24.6% | Yes |
| Cigna → CI | United States | $84.6bn | 0.192% | +0.003 pp | +0.005 pp | -6.5% | No |
| DaVita → DVA | United States | $10.3bn | 0.023% | -0.003 pp | -0.001 pp | -7.4% | 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.