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
Pharmaceuticals3.38%-2.13 ppBiotechnology1.66%-1.72 ppHealth Care Equipment1.82%-1.01 ppManaged Health Care1.30%-0.65 ppLife Sciences Tools & Services0.96%-0.55 ppHealth Care Services0.33%-0.38 ppHealth Care Distributors0.22%-0.29 ppHealth Care Supplies0.08%-0.06 ppHealth Care Facilities0.16%-0.05 ppHealth Care Technology0.00%+0.00 pp
3 · Sub-industry
Inside Health Care Services
Health Care Services · weight
0.33%
Industry change · 12M
-0.38 pp
Health Care Services · contribution
-0.376 pp
Company participation
0%
of industry constituents above their 6M weight average
4 · Companies driving this sub-industry
Jan 2019 · 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 | 0.220% | -0.030 pp | -0.234 pp | -14.2% | No |
| DaVita → DVA | United States | $9.3bn | 0.031% | -0.007 pp | -0.051 pp | -28.1% | No |
| Labcorp → LH | United States | $12.1bn | 0.040% | -0.007 pp | -0.047 pp | -20.1% | No |
| Quest Diagnostics → DGX | United States | $11.9bn | 0.039% | -0.004 pp | -0.043 pp | -15.7% | 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.