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
Pharmaceuticals3.66%-1.84 ppBiotechnology1.77%-1.61 ppHealth Care Equipment1.89%-0.94 ppManaged Health Care1.28%-0.67 ppLife Sciences Tools & Services0.97%-0.54 ppHealth Care Services0.35%-0.36 ppHealth Care Distributors0.21%-0.29 ppHealth Care Supplies0.07%-0.07 ppHealth Care Facilities0.15%-0.05 ppHealth Care Technology0.00%+0.00 pp
3 · Sub-industry
Inside Health Care Services
Health Care Services · weight
0.35%
Industry change · 12M
-0.36 pp
Health Care Services · contribution
-0.357 pp
Company participation
0%
of industry constituents above their 6M weight average
4 · Companies driving this sub-industry
Dec 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 | $66.8bn | 0.239% | -0.017 pp | -0.216 pp | -14.9% | No |
| DaVita → DVA | United States | $8.5bn | 0.031% | -0.008 pp | -0.051 pp | -34.1% | No |
| Labcorp → LH | United States | $11.0bn | 0.039% | -0.009 pp | -0.048 pp | -27.6% | No |
| Quest Diagnostics → DGX | United States | $11.3bn | 0.041% | -0.006 pp | -0.042 pp | -20.2% | 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.