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 Equipment2.54%+0.61 ppManaged Health Care0.92%-0.34 ppBiotechnology1.77%+0.14 ppHealth Care Distributors0.43%+0.14 ppLife Sciences Tools & Services0.90%-0.12 ppHealth Care Services0.49%+0.09 ppHealth Care Facilities0.20%+0.04 ppHealth Care Supplies0.09%-0.02 ppHealth Care Technology0.03%+0.01 ppPharmaceuticals3.49%-0.00 pp
3 · Sub-industry
Inside Health Care Services
Health Care Services · weight
0.49%
Industry change · 12M
+0.09 pp
Health Care Services · contribution
+0.094 pp
Company participation
40%
of industry constituents above their 6M weight average
4 · Companies driving this sub-industry
Jun 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 | $87.3bn | 0.188% | -0.015 pp | +0.049 pp | +22.2% | Yes |
| Labcorp → LH | United States | $22.0bn | 0.047% | +0.001 pp | +0.015 pp | +30.5% | Yes |
| Quest Diagnostics → DGX | United States | $20.1bn | 0.043% | -0.001 pp | +0.015 pp | +33.9% | No |
| Cigna → CI | United States | $88.3bn | 0.190% | -0.023 pp | +0.014 pp | +1.8% | No |
| DaVita → DVA | United States | $10.8bn | 0.023% | -0.006 pp | +0.000 pp | +2.8% | 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.