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
Managed Health Care1.88%-0.42 ppBiotechnology2.37%-0.28 ppLife Sciences Tools & Services1.67%-0.27 ppHealth Care Services0.67%-0.15 ppPharmaceuticals5.11%+0.09 ppHealth Care Equipment2.98%-0.05 ppHealth Care Distributors0.44%+0.05 ppHealth Care Supplies0.15%-0.03 ppHealth Care Facilities0.24%-0.00 ppHealth Care Technology0.00%+0.00 pp
3 · Sub-industry
Inside Health Care Services
Health Care Services · weight
0.67%
Industry change · 12M
-0.15 pp
Health Care Services · contribution
-0.153 pp
Company participation
40%
of industry constituents above their 6M weight average
4 · Companies driving this sub-industry
Feb 2024 · 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 | $93.6bn | 0.268% | -0.004 pp | -0.109 pp | -7.9% | No |
| Cigna → CI | United States | $98.3bn | 0.282% | +0.042 pp | -0.023 pp | +17.2% | Yes |
| Quest Diagnostics → DGX | United States | $13.8bn | 0.040% | -0.008 pp | -0.015 pp | -7.8% | No |
| Labcorp → LH | United States | $18.2bn | 0.052% | -0.005 pp | -0.012 pp | +6.4% | No |
| DaVita → DVA | United States | $11.1bn | 0.032% | +0.003 pp | +0.006 pp | +54.4% | 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.