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
Pharmaceuticals3.41%-0.36 ppManaged Health Care1.27%-0.36 ppHealth Care Equipment1.95%-0.35 ppLife Sciences Tools & Services1.09%-0.18 ppBiotechnology1.60%-0.16 ppHealth Care Services0.42%-0.08 ppHealth Care Technology0.02%+0.02 ppHealth Care Facilities0.17%-0.01 ppHealth Care Supplies0.12%-0.01 ppHealth Care Distributors0.29%-0.00 pp
3 · Sub-industry
Inside Health Care Services
Health Care Services · weight
0.42%
Industry change · 12M
-0.08 pp
Health Care Services · contribution
-0.078 pp
Company participation
0%
of industry constituents above their 6M weight average
4 · Companies driving this sub-industry
May 2024 · 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 | $74.8bn | 0.143% | -0.125 pp | -0.072 pp | -9.2% | No |
| Labcorp → LH | United States | $16.4bn | 0.031% | -0.021 pp | -0.009 pp | +8.2% | No |
| Quest Diagnostics → DGX | United States | $15.8bn | 0.030% | -0.009 pp | -0.007 pp | +9.4% | No |
| Cigna → CI | United States | $97.9bn | 0.187% | -0.094 pp | +0.006 pp | +41.8% | No |
| DaVita → DVA | United States | $12.9bn | 0.025% | -0.007 pp | +0.004 pp | +57.1% | 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.