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
Pharmaceuticals4.75%+4.74 ppHealth Care Equipment3.24%+3.24 ppBiotechnology2.55%+2.55 ppLife Sciences Tools & Services2.21%+2.20 ppManaged Health Care1.98%+1.98 ppHealth Care Services0.83%+0.83 ppHealth Care Supplies0.31%+0.31 ppHealth Care Distributors0.29%+0.29 ppHealth Care Facilities0.28%+0.28 ppHealth Care Technology0.00%+0.00 pp
3 · Sub-industry
Inside Health Care Equipment
Health Care Equipment · weight
3.24%
Industry change · 12M
+3.24 pp
Health Care Equipment · contribution
+3.237 pp
Company participation
100%
of industry constituents above their 6M weight average
4 · Companies driving this sub-industry
Jul 2021 · 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 | $215.0bn | 0.737% | -0.034 pp | +0.736 pp | +22.0% | Yes |
| Medtronic → MDT | United States | $176.5bn | 0.605% | -0.035 pp | +0.604 pp | +38.9% | Yes |
| Stryker Corporation → SYK | United States | $102.2bn | 0.350% | -0.008 pp | +0.350 pp | +41.6% | Yes |
| Edwards Lifesciences → EW | United States | $70.0bn | 0.240% | +0.025 pp | +0.240 pp | +43.2% | Yes |
| Boston Scientific → BSX | United States | $64.8bn | 0.222% | -0.002 pp | +0.222 pp | +18.2% | Yes |
| Idexx Laboratories → IDXX | United States | $57.7bn | 0.198% | +0.028 pp | +0.198 pp | +70.6% | Yes |
| Becton Dickinson → BDX | United States | $57.0bn | 0.196% | -0.005 pp | +0.195 pp | -7.8% | Yes |
| ResMed| → RMD | United States | $39.6bn | 0.136% | +0.036 pp | +0.135 pp | +35.3% | Yes |
| Intuitive Surgical → ISRG | United States | $39.2bn | 0.135% | +0.011 pp | +0.134 pp | +44.6% | Yes |
| Baxter International → BAX | United States | $38.7bn | 0.133% | -0.024 pp | +0.132 pp | -9.3% | Yes |
| Zimmer Biomet → ZBH | United States | $33.1bn | 0.113% | -0.016 pp | +0.113 pp | +22.0% | Yes |
| Revvity → RVTY | United States | $20.4bn | 0.070% | +0.017 pp | +0.070 pp | +53.6% | Yes |
| Steris → STE | United States | $18.6bn | 0.064% | -0.001 pp | +0.064 pp | +37.8% | Yes |
| Dexcom → DXCM | United States | $12.5bn | 0.043% | +0.009 pp | +0.043 pp | +18.4% | 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.