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
Pharmaceuticals5.46%+0.97 ppManaged Health Care2.54%+0.50 ppBiotechnology2.50%+0.42 ppLife Sciences Tools & Services2.04%+0.09 ppHealth Care Supplies0.18%-0.09 ppHealth Care Distributors0.38%+0.08 ppHealth Care Equipment3.17%-0.07 ppHealth Care Services0.91%+0.04 ppHealth Care Facilities0.24%-0.01 ppHealth Care Technology0.00%+0.00 pp
3 · Sub-industry
Inside Health Care Services
Health Care Services · weight
0.91%
Industry change · 12M
+0.04 pp
Health Care Services · contribution
+0.038 pp
Company participation
60%
of industry constituents above their 6M weight average
4 · Companies driving this sub-industry
Apr 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 |
|---|---|---|---|---|---|---|---|
| CVS Health → CVS | United States | $126.2bn | 0.456% | -0.017 pp | +0.093 pp | +28.7% | Yes |
| Cigna → CI | United States | $79.2bn | 0.286% | +0.029 pp | -0.031 pp | +0.9% | Yes |
| Labcorp → LH | United States | $19.1bn | 0.069% | -0.006 pp | -0.012 pp | -9.6% | No |
| DaVita → DVA | United States | $10.4bn | 0.038% | +0.001 pp | -0.007 pp | -7.0% | Yes |
| Quest Diagnostics → DGX | United States | $15.7bn | 0.057% | +0.001 pp | -0.006 pp | +3.4% | 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.