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
Pharmaceuticals5.42%+1.76 ppHealth Care Equipment3.35%+1.46 ppLife Sciences Tools & Services1.80%+0.83 ppManaged Health Care2.11%+0.83 ppBiotechnology2.55%+0.78 ppHealth Care Services1.04%+0.69 ppHealth Care Distributors0.33%+0.11 ppHealth Care Facilities0.25%+0.09 ppHealth Care Supplies0.13%+0.06 ppHealth Care Technology0.00%+0.00 pp
3 · Sub-industry
Inside Health Care Services
Health Care Services · weight
1.04%
Industry change · 12M
+0.69 pp
Health Care Services · contribution
+0.688 pp
Company participation
40%
of industry constituents above their 6M weight average
4 · Companies driving this sub-industry
Dec 2019 · 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 | $76.4bn | 0.375% | +0.070 pp | +0.375 pp | +7.7% | Yes |
| CVS Health → CVS | United States | $96.6bn | 0.474% | +0.038 pp | +0.236 pp | +17.3% | Yes |
| Labcorp → LH | United States | $14.1bn | 0.069% | -0.006 pp | +0.030 pp | +33.9% | No |
| Quest Diagnostics → DGX | United States | $14.4bn | 0.071% | -0.006 pp | +0.030 pp | +31.1% | No |
| DaVita → DVA | United States | $9.7bn | 0.048% | -0.001 pp | +0.017 pp | +45.8% | 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.