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
Biotechnology2.69%+0.18 ppManaged Health Care2.20%-0.16 ppHealth Care Services0.72%-0.15 ppLife Sciences Tools & Services1.95%-0.14 ppHealth Care Equipment3.14%-0.12 ppPharmaceuticals4.99%-0.05 ppHealth Care Supplies0.19%-0.04 ppHealth Care Distributors0.38%+0.02 ppHealth Care Facilities0.25%-0.01 ppHealth Care Technology0.00%+0.00 pp
3 · Sub-industry
Inside Health Care Services
Health Care Services · weight
0.72%
Industry change · 12M
-0.15 pp
Health Care Services · contribution
-0.146 pp
Company participation
20%
of industry constituents above their 6M weight average
4 · Companies driving this sub-industry
Mar 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 | $95.4bn | 0.326% | -0.116 pp | -0.122 pp | -24.8% | No |
| Labcorp → LH | United States | $17.4bn | 0.060% | -0.005 pp | -0.012 pp | -12.0% | No |
| DaVita → DVA | United States | $7.3bn | 0.025% | +0.001 pp | -0.012 pp | -28.3% | Yes |
| Quest Diagnostics → DGX | United States | $15.8bn | 0.054% | -0.011 pp | -0.001 pp | +5.4% | No |
| Cigna → CI | United States | $75.9bn | 0.259% | -0.107 pp | +0.000 pp | +8.4% | 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.