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
Pharmaceuticals3.30%-2.20 ppBiotechnology1.76%-1.62 ppHealth Care Equipment1.80%-1.03 ppManaged Health Care1.25%-0.70 ppLife Sciences Tools & Services0.93%-0.58 ppHealth Care Services0.38%-0.32 ppHealth Care Distributors0.23%-0.28 ppHealth Care Facilities0.15%-0.05 ppHealth Care Supplies0.11%-0.03 ppHealth Care Technology0.00%+0.00 pp
3 · Sub-industry
Inside Health Care Services
Health Care Services · weight
0.38%
Industry change · 12M
-0.32 pp
Health Care Services · contribution
-0.324 pp
Company participation
0%
of industry constituents above their 6M weight average
4 · Companies driving this sub-industry
Aug 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 | $76.6bn | 0.247% | -0.144 pp | -0.207 pp | -2.9% | No |
| DaVita → DVA | United States | $11.6bn | 0.037% | -0.033 pp | -0.044 pp | -11.2% | No |
| Labcorp → LH | United States | $15.1bn | 0.049% | -0.047 pp | -0.038 pp | -0.9% | No |
| Quest Diagnostics → DGX | United States | $15.0bn | 0.049% | -0.039 pp | -0.034 pp | +4.9% | 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.