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
Pharmaceuticals3.54%-1.96 ppBiotechnology1.63%-1.76 ppHealth Care Equipment1.79%-1.03 ppManaged Health Care1.29%-0.66 ppLife Sciences Tools & Services0.93%-0.58 ppHealth Care Services0.38%-0.33 ppHealth Care Distributors0.23%-0.28 ppHealth Care Supplies0.07%-0.07 ppHealth Care Facilities0.16%-0.05 ppHealth Care Technology0.00%+0.00 pp
3 · Sub-industry
Inside Health Care Services
Health Care Services · weight
0.38%
Industry change · 12M
-0.33 pp
Health Care Services · contribution
-0.327 pp
Company participation
0%
of industry constituents above their 6M weight average
4 · Companies driving this sub-industry
Oct 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 | $73.7bn | 0.250% | -0.135 pp | -0.205 pp | -6.0% | No |
| DaVita → DVA | United States | $11.2bn | 0.038% | -0.033 pp | -0.043 pp | -13.7% | No |
| Labcorp → LH | United States | $13.9bn | 0.047% | -0.042 pp | -0.040 pp | -8.0% | No |
| Quest Diagnostics → DGX | United States | $12.8bn | 0.043% | -0.042 pp | -0.039 pp | -9.8% | 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.