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
Pharmaceuticals5.40%+2.03 ppHealth Care Equipment3.38%+1.56 ppLife Sciences Tools & Services1.77%+0.80 ppBiotechnology2.38%+0.72 ppHealth Care Services0.99%+0.66 ppManaged Health Care1.95%+0.65 ppHealth Care Distributors0.34%+0.12 ppHealth Care Facilities0.23%+0.07 ppHealth Care Supplies0.12%+0.04 ppHealth Care Technology0.00%+0.00 pp
3 · Sub-industry
Inside Health Care Services
Health Care Services · weight
0.99%
Industry change · 12M
+0.66 pp
Health Care Services · contribution
+0.656 pp
Company participation
60%
of industry constituents above their 6M weight average
4 · Companies driving this sub-industry
Jan 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 | $71.8bn | 0.354% | +0.007 pp | +0.354 pp | -3.7% | Yes |
| CVS Health → CVS | United States | $88.2bn | 0.435% | -0.015 pp | +0.215 pp | +6.9% | No |
| Quest Diagnostics → DGX | United States | $14.9bn | 0.074% | +0.002 pp | +0.034 pp | +29.4% | Yes |
| Labcorp → LH | United States | $14.6bn | 0.072% | +0.001 pp | +0.032 pp | +25.9% | No |
| DaVita → DVA | United States | $10.4bn | 0.051% | +0.002 pp | +0.020 pp | +42.3% | 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.