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
Pharmaceuticals4.80%+2.43 ppHealth Care Equipment3.31%+1.65 ppManaged Health Care2.29%+1.35 ppBiotechnology2.39%+1.28 ppLife Sciences Tools & Services2.05%+1.06 ppHealth Care Services0.90%+0.48 ppHealth Care Distributors0.34%+0.20 ppHealth Care Facilities0.26%+0.15 ppHealth Care Supplies0.26%+0.12 ppHealth Care Technology0.00%+0.00 pp
3 · Sub-industry
Inside Health Care Services
Health Care Services · weight
0.90%
Industry change · 12M
+0.48 pp
Health Care Services · contribution
+0.485 pp
Company participation
60%
of industry constituents above their 6M weight average
4 · Companies driving this sub-industry
Feb 2022 · 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 | $136.0bn | 0.472% | +0.075 pp | +0.293 pp | +55.8% | Yes |
| Cigna → CI | United States | $76.3bn | 0.265% | +0.050 pp | +0.117 pp | +15.3% | Yes |
| Labcorp → LH | United States | $21.8bn | 0.076% | -0.004 pp | +0.035 pp | +13.1% | No |
| Quest Diagnostics → DGX | United States | $15.7bn | 0.054% | -0.007 pp | +0.024 pp | +15.6% | No |
| DaVita → DVA | United States | $10.9bn | 0.038% | +0.005 pp | +0.015 pp | +10.4% | Yes |
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.