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
Pharmaceuticals3.77%-1.83 ppManaged Health Care1.62%-0.88 ppHealth Care Equipment2.30%-0.81 ppBiotechnology1.77%-0.80 ppLife Sciences Tools & Services1.27%-0.79 ppHealth Care Services0.49%-0.43 ppHealth Care Distributors0.29%-0.09 ppHealth Care Supplies0.13%-0.05 ppHealth Care Facilities0.18%-0.04 ppHealth Care Technology0.00%+0.00 pp
3 · Sub-industry
Inside Health Care Services
Health Care Services · weight
0.49%
Industry change · 12M
-0.43 pp
Health Care Services · contribution
-0.433 pp
Company participation
0%
of industry constituents above their 6M weight average
4 · Companies driving this sub-industry
May 2023 · 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 | $87.2bn | 0.215% | -0.162 pp | -0.241 pp | -27.8% | No |
| Cigna → CI | United States | $73.2bn | 0.181% | -0.124 pp | -0.126 pp | -6.3% | No |
| Labcorp → LH | United States | $16.2bn | 0.040% | -0.024 pp | -0.031 pp | -12.8% | No |
| Quest Diagnostics → DGX | United States | $14.9bn | 0.037% | -0.017 pp | -0.023 pp | -4.1% | No |
| DaVita → DVA | United States | $8.5bn | 0.021% | -0.005 pp | -0.012 pp | -3.9% | 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.