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 Equipment2.88%+0.05 ppPharmaceuticals5.54%+0.04 ppHealth Care Services0.66%-0.04 ppBiotechnology3.42%+0.04 ppHealth Care Distributors0.49%-0.02 ppHealth Care Supplies0.14%+0.01 ppLife Sciences Tools & Services1.51%-0.01 ppManaged Health Care1.95%-0.00 ppHealth Care Facilities0.21%+0.00 ppHealth Care Technology0.00%+0.00 pp
3 · Sub-industry
Inside Health Care Equipment
Health Care Equipment · weight
2.88%
Industry change · 12M
+0.05 pp
Health Care Equipment · contribution
+0.051 pp
Company participation
67%
of industry constituents above their 6M weight average
4 · Companies driving this sub-industry
Feb 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 |
|---|---|---|---|---|---|---|---|
| Becton Dickinson → BDX | United States | $45.3bn | 0.272% | +0.029 pp | +0.029 pp | -8.6% | Yes |
| Medtronic → MDT | United States | $108.1bn | 0.648% | -0.015 pp | -0.015 pp | -7.0% | No |
| Abbott Laboratories → ABT | United States | $105.4bn | 0.631% | +0.014 pp | +0.014 pp | -2.9% | Yes |
| Stryker Corporation → SYK | United States | $60.8bn | 0.364% | +0.013 pp | +0.013 pp | -1.4% | Yes |
| Boston Scientific → BSX | United States | $37.5bn | 0.225% | +0.006 pp | +0.006 pp | -2.5% | Yes |
| Edwards Lifesciences → EW | United States | $9.4bn | 0.056% | +0.005 pp | +0.005 pp | +5.6% | Yes |
| Zimmer Biomet → ZBH | United States | $22.9bn | 0.137% | -0.005 pp | -0.005 pp | -8.6% | No |
| Idexx Laboratories → IDXX | United States | $16.3bn | 0.098% | +0.005 pp | +0.005 pp | +0.1% | Yes |
| Baxter International → BAX | United States | $36.6bn | 0.219% | -0.004 pp | -0.004 pp | -5.9% | No |
| Intuitive Surgical → ISRG | United States | $16.0bn | 0.096% | +0.004 pp | +0.004 pp | -1.2% | Yes |
| ResMed| → RMD | United States | $13.6bn | 0.082% | -0.001 pp | -0.001 pp | -5.1% | No |
| Revvity → RVTY | United States | $8.4bn | 0.051% | +0.000 pp | +0.000 pp | -4.8% | 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.