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
Biotechnology2.40%-0.71 ppLife Sciences Tools & Services1.90%+0.35 ppHealth Care Services0.91%+0.25 ppHealth Care Equipment3.33%+0.23 ppManaged Health Care1.95%-0.16 ppPharmaceuticals5.61%+0.11 ppHealth Care Distributors0.37%-0.06 ppHealth Care Supplies0.14%-0.04 ppHealth Care Facilities0.25%+0.03 ppHealth Care Technology0.00%+0.00 pp
3 · Sub-industry
Inside Health Care Services
Health Care Services · weight
0.91%
Industry change · 12M
+0.25 pp
Health Care Services · contribution
+0.250 pp
Company participation
100%
of industry constituents above their 6M weight average
4 · Companies driving this sub-industry
Jun 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 | $59.8bn | 0.322% | -0.029 pp | +0.322 pp | -7.3% | Yes |
| DaVita → DVA | United States | $9.4bn | 0.050% | -0.001 pp | -0.023 pp | -19.0% | Yes |
| Labcorp → LH | United States | $14.6bn | 0.079% | +0.004 pp | -0.017 pp | -3.7% | Yes |
| Quest Diagnostics → DGX | United States | $13.7bn | 0.074% | +0.004 pp | -0.017 pp | -5.4% | Yes |
| CVS Health → CVS | United States | $70.8bn | 0.382% | -0.020 pp | -0.015 pp | -12.6% | 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.