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
Life Sciences Tools & Services2.30%+0.31 ppManaged Health Care2.22%+0.19 ppBiotechnology2.33%+0.06 ppHealth Care Facilities0.26%+0.03 ppHealth Care Supplies0.29%+0.02 ppHealth Care Equipment3.33%-0.02 ppHealth Care Services0.87%+0.01 ppPharmaceuticals4.84%-0.01 ppHealth Care Distributors0.29%-0.00 ppHealth Care Technology0.00%+0.00 pp
3 · Sub-industry
Inside Health Care Services
Health Care Services · weight
0.87%
Industry change · 12M
+0.01 pp
Health Care Services · contribution
+0.015 pp
Company participation
80%
of industry constituents above their 6M weight average
4 · Companies driving this sub-industry
Dec 2021 · 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 | $136.2bn | 0.436% | +0.043 pp | +0.074 pp | +54.9% | Yes |
| Cigna → CI | United States | $76.1bn | 0.244% | +0.005 pp | -0.061 pp | +12.3% | Yes |
| DaVita → DVA | United States | $11.6bn | 0.037% | -0.006 pp | -0.016 pp | -3.1% | No |
| Labcorp → LH | United States | $25.8bn | 0.083% | +0.001 pp | +0.014 pp | +54.4% | Yes |
| Quest Diagnostics → DGX | United States | $21.2bn | 0.068% | +0.006 pp | +0.003 pp | +47.9% | 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.