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
Pharmaceuticals4.40%-0.86 ppManaged Health Care1.72%-0.51 ppBiotechnology2.12%-0.40 ppHealth Care Equipment2.53%-0.38 ppLife Sciences Tools & Services1.39%-0.31 ppHealth Care Services0.53%-0.19 ppHealth Care Distributors0.34%-0.09 ppHealth Care Supplies0.15%-0.04 ppHealth Care Technology0.03%+0.03 ppHealth Care Facilities0.24%+0.02 pp
3 · Sub-industry
Inside Health Care Services
Health Care Services · weight
0.53%
Industry change · 12M
-0.19 pp
Health Care Services · contribution
-0.191 pp
Company participation
100%
of industry constituents above their 6M weight average
4 · Companies driving this sub-industry
Sep 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 | $79.1bn | 0.184% | +0.045 pp | -0.115 pp | -6.4% | Yes |
| Cigna → CI | United States | $96.8bn | 0.225% | +0.049 pp | -0.057 pp | +23.2% | Yes |
| Labcorp → LH | United States | $18.8bn | 0.044% | +0.012 pp | -0.016 pp | +12.7% | Yes |
| Quest Diagnostics → DGX | United States | $17.3bn | 0.040% | +0.012 pp | -0.005 pp | +30.3% | Yes |
| DaVita → DVA | United States | $13.8bn | 0.032% | +0.009 pp | +0.003 pp | +73.4% | 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.