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 Equipment1.61%-0.81 ppPharmaceuticals4.07%+0.65 ppBiotechnology1.99%+0.19 ppHealth Care Technology0.10%+0.08 ppHealth Care Facilities0.15%-0.04 ppHealth Care Services0.43%-0.04 ppLife Sciences Tools & Services0.93%-0.03 ppManaged Health Care0.85%+0.02 ppHealth Care Supplies0.08%-0.00 ppHealth Care Distributors0.38%-0.00 pp
3 · Sub-industry
Inside Health Care Equipment
Health Care Equipment · weight
1.61%
Industry change · 12M
-0.81 pp
Health Care Equipment · contribution
-0.808 pp
Company participation
81%
of industry constituents above their 6M weight average
4 · Companies driving this sub-industry
Aug 2026 · 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 |
|---|---|---|---|---|---|---|---|
| Boston Scientific → BSX | United States | $70.0bn | 0.117% | -0.008 pp | -0.207 pp | -54.2% | No |
| Abbott Laboratories → ABT | United States | $192.2bn | 0.320% | +0.062 pp | -0.159 pp | -14.9% | Yes |
| Intuitive Surgical → ISRG | United States | $133.1bn | 0.222% | -0.039 pp | -0.130 pp | -20.4% | No |
| Stryker Corporation → SYK | United States | $124.2bn | 0.207% | +0.004 pp | -0.103 pp | -16.4% | Yes |
| Medtronic → MDT | United States | $116.0bn | 0.193% | +0.029 pp | -0.054 pp | +0.8% | Yes |
| Idexx Laboratories → IDXX | United States | $43.9bn | 0.073% | -0.004 pp | -0.034 pp | -14.0% | Yes |
| Insulet Corporation → PODD | United States | $10.3bn | 0.017% | -0.000 pp | -0.032 pp | -56.3% | No |
| ResMed| → RMD | United States | $34.6bn | 0.058% | +0.010 pp | -0.026 pp | -11.6% | Yes |
| GE HealthCare → GEHC | United States | $32.4bn | 0.054% | +0.005 pp | -0.016 pp | -3.2% | Yes |
| Steris → STE | United States | $22.7bn | 0.038% | +0.002 pp | -0.012 pp | -4.3% | Yes |
| Edwards Lifesciences → EW | United States | $52.3bn | 0.087% | +0.001 pp | -0.012 pp | +11.6% | Yes |
| Zimmer Biomet → ZBH | United States | $19.1bn | 0.032% | +0.004 pp | -0.012 pp | -4.7% | Yes |
| Becton Dickinson → BDX | United States | $51.2bn | 0.085% | +0.015 pp | -0.005 pp | +27.0% | Yes |
| Dexcom → DXCM | United States | $34.4bn | 0.057% | +0.008 pp | -0.004 pp | +20.9% | Yes |
| Baxter International → BAX | United States | $13.4bn | 0.022% | +0.006 pp | -0.004 pp | +5.5% | Yes |
| Revvity → RVTY | United States | $14.4bn | 0.024% | +0.004 pp | +0.002 pp | +43.2% | 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.