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
Biotechnology2.50%-0.59 ppLife Sciences Tools & Services1.81%+0.27 ppHealth Care Services0.93%+0.25 ppHealth Care Equipment3.19%+0.21 ppHealth Care Distributors0.35%-0.15 ppManaged Health Care1.93%-0.15 ppPharmaceuticals5.74%+0.14 ppHealth Care Facilities0.24%+0.04 ppHealth Care Supplies0.16%+0.02 ppHealth Care Technology0.00%+0.00 pp
3 · Sub-industry
Inside Health Care Equipment
Health Care Equipment · weight
3.19%
Industry change · 12M
+0.21 pp
Health Care Equipment · contribution
+0.207 pp
Company participation
100%
of industry constituents above their 6M weight average
4 · Companies driving this sub-industry
Apr 2019 · 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 | $139.7bn | 0.779% | +0.356 pp | +0.155 pp | +39.3% | Yes |
| Boston Scientific → BSX | United States | $51.6bn | 0.288% | +0.114 pp | +0.045 pp | +29.2% | Yes |
| Becton Dickinson → BDX | United States | $49.7bn | 0.277% | +0.108 pp | -0.014 pp | +5.1% | Yes |
| Edwards Lifesciences → EW | United States | $12.2bn | 0.068% | +0.029 pp | +0.013 pp | +38.2% | Yes |
| Baxter International → BAX | United States | $39.1bn | 0.218% | +0.091 pp | -0.013 pp | +10.9% | Yes |
| Revvity → RVTY | United States | $10.6bn | 0.059% | +0.026 pp | +0.009 pp | +31.1% | Yes |
| Intuitive Surgical → ISRG | United States | $19.7bn | 0.109% | +0.044 pp | +0.007 pp | +15.8% | Yes |
| Idexx Laboratories → IDXX | United States | $20.0bn | 0.111% | +0.051 pp | +0.007 pp | +19.3% | Yes |
| Stryker Corporation → SYK | United States | $70.6bn | 0.393% | +0.174 pp | +0.004 pp | +12.8% | Yes |
| Medtronic → MDT | United States | $119.1bn | 0.664% | +0.272 pp | -0.004 pp | +12.7% | Yes |
| Zimmer Biomet → ZBH | United States | $24.4bn | 0.136% | +0.065 pp | -0.003 pp | +7.8% | Yes |
| ResMed| → RMD | United States | $15.0bn | 0.083% | +0.039 pp | +0.000 pp | +12.0% | 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.