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
Biotechnology2.27%-0.85 ppPharmaceuticals5.25%-0.53 ppHealth Care Services0.93%+0.30 ppHealth Care Equipment3.39%+0.28 ppManaged Health Care1.99%-0.14 ppLife Sciences Tools & Services1.75%+0.11 ppHealth Care Supplies0.11%-0.07 ppHealth Care Distributors0.36%-0.03 ppHealth Care Facilities0.24%-0.01 ppHealth Care Technology0.00%+0.00 pp
3 · Sub-industry
Inside Health Care Services
Health Care Services · weight
0.93%
Industry change · 12M
+0.30 pp
Health Care Services · contribution
+0.299 pp
Company participation
40%
of industry constituents above their 6M weight average
4 · Companies driving this sub-industry
Jul 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 | $64.5bn | 0.343% | +0.007 pp | +0.343 pp | -5.3% | No |
| DaVita → DVA | United States | $10.0bn | 0.053% | +0.002 pp | -0.019 pp | -14.8% | Yes |
| Labcorp → LH | United States | $14.2bn | 0.075% | -0.000 pp | -0.014 pp | -4.5% | No |
| Quest Diagnostics → DGX | United States | $13.7bn | 0.073% | +0.001 pp | -0.013 pp | -3.1% | Yes |
| CVS Health → CVS | United States | $72.6bn | 0.386% | -0.007 pp | +0.002 pp | -11.0% | 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.