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
Biotechnology2.68%+0.35 ppPharmaceuticals5.20%+0.34 ppHealth Care Equipment2.94%-0.23 ppManaged Health Care2.37%+0.19 ppLife Sciences Tools & Services2.00%-0.11 ppHealth Care Distributors0.41%+0.10 ppHealth Care Supplies0.15%-0.09 ppHealth Care Services0.88%-0.02 ppHealth Care Facilities0.25%-0.00 ppHealth Care Technology0.00%+0.00 pp
3 · Sub-industry
Inside Health Care Services
Health Care Services · weight
0.88%
Industry change · 12M
-0.02 pp
Health Care Services · contribution
-0.021 pp
Company participation
20%
of industry constituents above their 6M weight average
4 · Companies driving this sub-industry
Jan 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 | $115.9bn | 0.397% | -0.044 pp | -0.076 pp | -15.2% | No |
| Cigna → CI | United States | $96.8bn | 0.331% | -0.018 pp | +0.074 pp | +39.7% | No |
| DaVita → DVA | United States | $7.4bn | 0.025% | +0.002 pp | -0.012 pp | -24.0% | No |
| Labcorp → LH | United States | $19.2bn | 0.066% | +0.005 pp | -0.009 pp | -6.3% | Yes |
| Quest Diagnostics → DGX | United States | $16.9bn | 0.058% | -0.000 pp | +0.002 pp | +12.1% | 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.