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
Biotechnology3.20%-0.18 ppPharmaceuticals5.60%+0.10 ppHealth Care Equipment2.92%+0.10 ppHealth Care Services0.63%-0.07 ppManaged Health Care1.90%-0.06 ppHealth Care Distributors0.47%-0.04 ppLife Sciences Tools & Services1.53%+0.02 ppHealth Care Facilities0.21%+0.00 ppHealth Care Supplies0.14%+0.00 ppHealth Care Technology0.00%+0.00 pp
3 · Sub-industry
Inside Health Care Equipment
Health Care Equipment · weight
2.92%
Industry change · 12M
+0.10 pp
Health Care Equipment · contribution
+0.096 pp
Company participation
83%
of industry constituents above their 6M weight average
4 · Companies driving this sub-industry
Mar 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 | $44.3bn | 0.271% | +0.029 pp | +0.029 pp | -10.5% | Yes |
| Abbott Laboratories → ABT | United States | $104.6bn | 0.642% | +0.025 pp | +0.025 pp | -3.6% | Yes |
| Stryker Corporation → SYK | United States | $60.3bn | 0.370% | +0.019 pp | +0.019 pp | -1.8% | Yes |
| Boston Scientific → BSX | United States | $37.6bn | 0.230% | +0.011 pp | +0.011 pp | -2.3% | Yes |
| Zimmer Biomet → ZBH | United States | $21.5bn | 0.132% | -0.011 pp | -0.011 pp | -14.0% | No |
| Idexx Laboratories → IDXX | United States | $16.7bn | 0.102% | +0.009 pp | +0.009 pp | +2.3% | Yes |
| Edwards Lifesciences → EW | United States | $9.8bn | 0.060% | +0.009 pp | +0.009 pp | +10.2% | Yes |
| Baxter International → BAX | United States | $35.1bn | 0.216% | -0.008 pp | -0.008 pp | -9.5% | No |
| ResMed| → RMD | United States | $14.1bn | 0.086% | +0.004 pp | +0.004 pp | -1.9% | Yes |
| Medtronic → MDT | United States | $108.7bn | 0.667% | +0.004 pp | +0.004 pp | -6.1% | Yes |
| Intuitive Surgical → ISRG | United States | $15.5bn | 0.095% | +0.003 pp | +0.003 pp | -4.4% | Yes |
| Revvity → RVTY | United States | $8.4bn | 0.051% | +0.001 pp | +0.001 pp | -5.5% | 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.