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
Pharmaceuticals4.74%+4.73 ppHealth Care Equipment3.09%+3.08 ppBiotechnology2.57%+2.56 ppLife Sciences Tools & Services2.27%+2.27 ppManaged Health Care1.92%+1.91 ppHealth Care Services0.81%+0.81 ppHealth Care Supplies0.32%+0.32 ppHealth Care Distributors0.28%+0.28 ppHealth Care Facilities0.27%+0.27 ppHealth Care Technology0.00%+0.00 pp
3 · Sub-industry
Inside Health Care Equipment
Health Care Equipment · weight
3.09%
Industry change · 12M
+3.08 pp
Health Care Equipment · contribution
+3.084 pp
Company participation
79%
of industry constituents above their 6M weight average
4 · Companies driving this sub-industry
Aug 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 |
|---|---|---|---|---|---|---|---|
| Abbott Laboratories → ABT | United States | $224.0bn | 0.749% | +0.007 pp | +0.748 pp | +17.2% | Yes |
| Medtronic → MDT | United States | $179.4bn | 0.600% | -0.011 pp | +0.599 pp | +26.8% | Yes |
| Stryker Corporation → SYK | United States | $104.5bn | 0.349% | +0.005 pp | +0.349 pp | +41.3% | Yes |
| Edwards Lifesciences → EW | United States | $73.0bn | 0.244% | +0.031 pp | +0.244 pp | +36.5% | Yes |
| Boston Scientific → BSX | United States | $64.3bn | 0.215% | -0.002 pp | +0.215 pp | +10.1% | Yes |
| Idexx Laboratories → IDXX | United States | $57.3bn | 0.192% | +0.021 pp | +0.192 pp | +72.3% | Yes |
| Becton Dickinson → BDX | United States | $55.4bn | 0.185% | -0.008 pp | +0.185 pp | +5.1% | Yes |
| Intuitive Surgical → ISRG | United States | $41.7bn | 0.139% | +0.020 pp | +0.139 pp | +44.2% | Yes |
| Baxter International → BAX | United States | $38.1bn | 0.127% | -0.021 pp | +0.127 pp | -11.6% | No |
| Zimmer Biomet → ZBH | United States | $30.5bn | 0.102% | -0.020 pp | +0.102 pp | +7.5% | No |
| Steris → STE | United States | $21.4bn | 0.072% | +0.013 pp | +0.072 pp | +35.5% | Yes |
| Revvity → RVTY | United States | $20.7bn | 0.069% | +0.011 pp | +0.069 pp | +57.3% | Yes |
| Dexcom → DXCM | United States | $12.8bn | 0.043% | +0.011 pp | +0.043 pp | +24.4% | Yes |
| ResMed| → RMD | United States | $0.0bn | 0.000% | -0.107 pp | +0.000 pp | +61.9% | 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.