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 Care2.01%-0.36 ppLife Sciences Tools & Services1.64%-0.36 ppPharmaceuticals4.92%-0.29 ppHealth Care Services0.67%-0.20 ppBiotechnology2.51%-0.17 ppHealth Care Equipment3.01%+0.07 ppHealth Care Distributors0.44%+0.03 ppHealth Care Facilities0.24%-0.00 ppHealth Care Supplies0.16%+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
-0.20 pp
Health Care Services · contribution
-0.202 pp
Company participation
20%
of industry constituents above their 6M weight average
4 · Companies driving this sub-industry
Jan 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 | $95.7bn | 0.285% | -0.017 pp | -0.112 pp | -12.8% | No |
| Cigna → CI | United States | $88.1bn | 0.262% | -0.049 pp | -0.069 pp | -3.2% | No |
| Quest Diagnostics → DGX | United States | $14.4bn | 0.043% | -0.007 pp | -0.015 pp | -11.7% | No |
| Labcorp → LH | United States | $18.9bn | 0.056% | -0.002 pp | -0.010 pp | +4.0% | No |
| DaVita → DVA | United States | $9.9bn | 0.029% | +0.005 pp | +0.004 pp | +31.3% | 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.