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
Pharmaceuticals5.82%+0.98 ppBiotechnology2.90%+0.57 ppManaged Health Care2.63%+0.41 ppHealth Care Equipment3.06%-0.27 ppLife Sciences Tools & Services2.05%-0.25 ppHealth Care Supplies0.14%-0.16 ppHealth Care Distributors0.43%+0.14 ppHealth Care Services0.96%+0.09 ppHealth Care Facilities0.24%-0.01 ppHealth Care Technology0.00%+0.00 pp
3 · Sub-industry
Inside Health Care Services
Health Care Services · weight
0.96%
Industry change · 12M
+0.09 pp
Health Care Services · contribution
+0.093 pp
Company participation
60%
of industry constituents above their 6M weight average
4 · Companies driving this sub-industry
Dec 2022 · 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 |
|---|---|---|---|---|---|---|---|
| Cigna → CI | United States | $101.3bn | 0.366% | +0.033 pp | +0.122 pp | +46.7% | Yes |
| Labcorp → LH | United States | $17.9bn | 0.065% | +0.002 pp | -0.018 pp | -24.4% | Yes |
| DaVita → DVA | United States | $6.7bn | 0.024% | -0.005 pp | -0.013 pp | -34.4% | No |
| CVS Health → CVS | United States | $122.4bn | 0.442% | -0.050 pp | +0.006 pp | -7.6% | No |
| Quest Diagnostics → DGX | United States | $17.8bn | 0.064% | +0.008 pp | -0.004 pp | -7.8% | 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.