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
Pharmaceuticals3.82%-0.88 ppManaged Health Care1.39%-0.68 ppBiotechnology1.79%-0.61 ppLife Sciences Tools & Services1.15%-0.49 ppHealth Care Equipment2.43%-0.46 ppHealth Care Services0.41%-0.28 ppHealth Care Distributors0.35%-0.06 ppHealth Care Facilities0.17%-0.04 ppHealth Care Technology0.03%+0.03 ppHealth Care Supplies0.13%-0.02 pp
3 · Sub-industry
Inside Health Care Services
Health Care Services · weight
0.41%
Industry change · 12M
-0.28 pp
Health Care Services · contribution
-0.285 pp
Company participation
20%
of industry constituents above their 6M weight average
4 · Companies driving this sub-industry
Dec 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 | $56.5bn | 0.128% | -0.056 pp | -0.175 pp | -40.8% | No |
| Cigna → CI | United States | $76.8bn | 0.174% | -0.051 pp | -0.087 pp | -6.3% | No |
| Labcorp → LH | United States | $19.2bn | 0.043% | -0.000 pp | -0.014 pp | +2.2% | Yes |
| Quest Diagnostics → DGX | United States | $16.8bn | 0.038% | -0.002 pp | -0.008 pp | +11.8% | No |
| DaVita → DVA | United States | $12.3bn | 0.028% | -0.004 pp | -0.001 pp | +42.8% | 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.