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
Pharmaceuticals3.70%-2.35 ppManaged Health Care1.49%-1.26 ppBiotechnology1.65%-1.11 ppLife Sciences Tools & Services1.23%-0.87 ppHealth Care Equipment2.33%-0.72 ppHealth Care Services0.50%-0.46 ppHealth Care Distributors0.30%-0.09 ppHealth Care Supplies0.14%-0.04 ppHealth Care Facilities0.19%+0.00 ppHealth Care Technology0.00%+0.00 pp
3 · Sub-industry
Inside Health Care Services
Health Care Services · weight
0.50%
Industry change · 12M
-0.46 pp
Health Care Services · contribution
-0.463 pp
Company participation
0%
of industry constituents above their 6M weight average
4 · Companies driving this sub-industry
Jun 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 | $88.6bn | 0.205% | -0.121 pp | -0.268 pp | -23.4% | No |
| Cigna → CI | United States | $83.0bn | 0.192% | -0.067 pp | -0.133 pp | +8.2% | No |
| Labcorp → LH | United States | $18.4bn | 0.042% | -0.017 pp | -0.030 pp | +4.2% | No |
| Quest Diagnostics → DGX | United States | $15.7bn | 0.036% | -0.017 pp | -0.024 pp | +7.8% | No |
| DaVita → DVA | United States | $9.1bn | 0.021% | -0.004 pp | -0.008 pp | +25.7% | 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.