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
Pharmaceuticals4.48%-1.87 ppBiotechnology2.08%-1.01 ppManaged Health Care2.04%-0.41 ppHealth Care Equipment3.24%-0.35 ppHealth Care Services0.87%-0.20 ppHealth Care Supplies0.28%+0.16 ppLife Sciences Tools & Services1.94%-0.07 ppHealth Care Distributors0.30%-0.07 ppHealth Care Facilities0.24%+0.03 ppHealth Care Technology0.00%+0.00 pp
3 · Sub-industry
Inside Health Care Services
Health Care Services · weight
0.87%
Industry change · 12M
-0.20 pp
Health Care Services · contribution
-0.203 pp
Company participation
100%
of industry constituents above their 6M weight average
4 · Companies driving this sub-industry
Apr 2021 · 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 |
|---|---|---|---|---|---|---|---|
| Cigna → CI | United States | $87.6bn | 0.318% | +0.130 pp | -0.090 pp | +27.7% | Yes |
| CVS Health → CVS | United States | $100.2bn | 0.363% | +0.138 pp | -0.086 pp | +27.8% | Yes |
| Quest Diagnostics → DGX | United States | $17.2bn | 0.062% | +0.021 pp | -0.020 pp | +22.1% | Yes |
| DaVita → DVA | United States | $12.4bn | 0.045% | +0.013 pp | -0.011 pp | +47.5% | Yes |
| Labcorp → LH | United States | $22.3bn | 0.081% | +0.035 pp | +0.004 pp | +61.7% | 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.