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
Health Care Equipment3.10%+0.28 ppBiotechnology3.11%-0.27 ppManaged Health Care2.11%+0.16 ppHealth Care Distributors0.42%-0.09 ppHealth Care Services0.66%-0.05 ppHealth Care Supplies0.18%+0.05 ppLife Sciences Tools & Services1.55%+0.03 ppHealth Care Facilities0.22%+0.01 ppPharmaceuticals5.50%+0.00 ppHealth Care Technology0.00%+0.00 pp
3 · Sub-industry
Inside Health Care Services
Health Care Services · weight
0.66%
Industry change · 12M
-0.05 pp
Health Care Services · contribution
-0.049 pp
Company participation
50%
of industry constituents above their 6M weight average
4 · Companies driving this sub-industry
Jun 2018 · 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 | $65.4bn | 0.397% | +0.010 pp | -0.058 pp | -17.6% | No |
| Labcorp → LH | United States | $15.8bn | 0.096% | +0.009 pp | +0.009 pp | +2.9% | Yes |
| Quest Diagnostics → DGX | United States | $14.9bn | 0.091% | +0.007 pp | +0.008 pp | +4.4% | Yes |
| DaVita → DVA | United States | $12.1bn | 0.074% | -0.000 pp | -0.008 pp | -11.0% | 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.