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
Pharmaceuticals5.04%+2.63 ppHealth Care Equipment3.25%+1.62 ppBiotechnology2.51%+1.38 ppManaged Health Care2.36%+1.33 ppLife Sciences Tools & Services2.10%+1.13 ppHealth Care Services0.87%+0.41 ppHealth Care Distributors0.36%+0.19 ppHealth Care Facilities0.26%+0.13 ppHealth Care Supplies0.24%+0.10 ppHealth Care Technology0.00%+0.00 pp
3 · Sub-industry
Inside Health Care Services
Health Care Services · weight
0.87%
Industry change · 12M
+0.41 pp
Health Care Services · contribution
+0.411 pp
Company participation
60%
of industry constituents above their 6M weight average
4 · Companies driving this sub-industry
Mar 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 | $132.8bn | 0.447% | +0.011 pp | +0.254 pp | +37.8% | Yes |
| Cigna → CI | United States | $76.9bn | 0.259% | +0.015 pp | +0.093 pp | +1.0% | Yes |
| Labcorp → LH | United States | $21.2bn | 0.071% | -0.012 pp | +0.029 pp | +3.4% | No |
| Quest Diagnostics → DGX | United States | $16.3bn | 0.055% | -0.013 pp | +0.022 pp | +8.6% | No |
| DaVita → DVA | United States | $10.9bn | 0.037% | -0.000 pp | +0.014 pp | +5.0% | 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.