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
Pharmaceuticals3.66%-1.84 ppBiotechnology1.76%-1.62 ppHealth Care Equipment1.88%-0.95 ppManaged Health Care1.35%-0.61 ppLife Sciences Tools & Services0.98%-0.53 ppHealth Care Services0.39%-0.32 ppHealth Care Distributors0.23%-0.28 ppHealth Care Supplies0.07%-0.06 ppHealth Care Facilities0.16%-0.04 ppHealth Care Technology0.00%+0.00 pp
3 · Sub-industry
Inside Health Care Equipment
Health Care Equipment · weight
1.88%
Industry change · 12M
-0.95 pp
Health Care Equipment · contribution
-0.950 pp
Company participation
0%
of industry constituents above their 6M weight average
4 · Companies driving this sub-industry
Nov 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 |
|---|---|---|---|---|---|---|---|
| Medtronic → MDT | United States | $131.0bn | 0.435% | +0.015 pp | -0.228 pp | +14.9% | No |
| Abbott Laboratories → ABT | United States | $130.1bn | 0.432% | +0.054 pp | -0.185 pp | +20.7% | No |
| Stryker Corporation → SYK | United States | $65.7bn | 0.218% | +0.014 pp | -0.133 pp | +7.6% | No |
| Baxter International → BAX | United States | $36.5bn | 0.121% | -0.007 pp | -0.103 pp | -3.8% | No |
| Becton Dickinson → BDX | United States | $52.0bn | 0.173% | -0.001 pp | -0.070 pp | +5.0% | No |
| Zimmer Biomet → ZBH | United States | $23.2bn | 0.077% | -0.002 pp | -0.066 pp | -7.4% | No |
| Boston Scientific → BSX | United States | $52.1bn | 0.173% | +0.014 pp | -0.046 pp | +34.7% | No |
| Idexx Laboratories → IDXX | United States | $17.6bn | 0.058% | -0.013 pp | -0.035 pp | +8.9% | No |
| ResMed| → RMD | United States | $15.9bn | 0.053% | +0.002 pp | -0.029 pp | +12.5% | No |
| Intuitive Surgical → ISRG | United States | $20.2bn | 0.067% | -0.001 pp | -0.025 pp | +23.0% | No |
| Revvity → RVTY | United States | $9.7bn | 0.032% | -0.001 pp | -0.018 pp | +8.9% | No |
| Edwards Lifesciences → EW | United States | $11.3bn | 0.038% | +0.005 pp | -0.013 pp | +28.0% | 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.