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
Health Care Equipment3.11%+0.29 ppPharmaceuticals5.77%+0.27 ppBiotechnology3.12%-0.26 ppManaged Health Care2.13%+0.18 ppLife Sciences Tools & Services1.64%+0.12 ppHealth Care Distributors0.40%-0.11 ppHealth Care Services0.63%-0.07 ppHealth Care Facilities0.25%+0.05 ppHealth Care Supplies0.19%+0.05 ppHealth Care Technology0.00%+0.00 pp
3 · Sub-industry
Inside Health Care Services
Health Care Services · weight
0.63%
Industry change · 12M
-0.07 pp
Health Care Services · contribution
-0.074 pp
Company participation
0%
of industry constituents above their 6M weight average
4 · Companies driving this sub-industry
Jul 2018 · 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 | $65.9bn | 0.385% | -0.051 pp | -0.070 pp | -16.3% | No |
| DaVita → DVA | United States | $12.3bn | 0.072% | +0.001 pp | -0.010 pp | -9.9% | No |
| Quest Diagnostics → DGX | United States | $14.7bn | 0.086% | +0.001 pp | +0.004 pp | +2.8% | No |
| Labcorp → LH | United States | $15.3bn | 0.090% | -0.002 pp | +0.002 pp | +0.5% | 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.