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
Pharmaceuticals6.36%+0.62 ppBiotechnology3.09%+0.60 ppManaged Health Care2.45%+0.51 ppHealth Care Equipment3.59%+0.40 ppLife Sciences Tools & Services2.01%+0.20 ppHealth Care Services1.07%+0.14 ppHealth Care Supplies0.12%-0.05 ppHealth Care Facilities0.21%-0.03 ppHealth Care Distributors0.37%+0.02 ppHealth Care Technology0.00%+0.00 pp
3 · Sub-industry
Inside Health Care Services
Health Care Services · weight
1.07%
Industry change · 12M
+0.14 pp
Health Care Services · contribution
+0.143 pp
Company participation
100%
of industry constituents above their 6M weight average
4 · Companies driving this sub-industry
Apr 2020 · 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 | $72.8bn | 0.408% | +0.053 pp | +0.071 pp | +23.3% | Yes |
| CVS Health → CVS | United States | $80.3bn | 0.449% | +0.014 pp | +0.056 pp | +16.8% | Yes |
| Quest Diagnostics → DGX | United States | $14.7bn | 0.082% | +0.009 pp | +0.010 pp | +16.9% | Yes |
| DaVita → DVA | United States | $9.9bn | 0.056% | +0.004 pp | +0.004 pp | +43.0% | Yes |
| Labcorp → LH | United States | $13.7bn | 0.077% | +0.005 pp | +0.001 pp | +2.8% | 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.