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
Pharmaceuticals5.61%+1.00 ppBiotechnology2.57%+0.50 ppManaged Health Care2.50%+0.40 ppHealth Care Supplies0.18%-0.10 ppHealth Care Distributors0.39%+0.10 ppLife Sciences Tools & Services2.06%+0.06 ppHealth Care Facilities0.22%-0.03 ppHealth Care Equipment3.11%-0.02 ppHealth Care Services0.93%+0.01 ppHealth Care Technology0.00%+0.00 pp
3 · Sub-industry
Inside Health Care Services
Health Care Services · weight
0.93%
Industry change · 12M
+0.01 pp
Health Care Services · contribution
+0.011 pp
Company participation
60%
of industry constituents above their 6M weight average
4 · Companies driving this sub-industry
May 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 | $126.9bn | 0.457% | -0.015 pp | +0.049 pp | +14.5% | Yes |
| DaVita → DVA | United States | $9.2bn | 0.033% | -0.004 pp | -0.012 pp | -18.8% | No |
| Labcorp → LH | United States | $19.6bn | 0.071% | -0.005 pp | -0.012 pp | -9.9% | No |
| Cigna → CI | United States | $85.1bn | 0.307% | +0.042 pp | -0.012 pp | +5.6% | Yes |
| Quest Diagnostics → DGX | United States | $16.6bn | 0.060% | +0.005 pp | -0.002 pp | +9.1% | 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.