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
Pharmaceuticals4.61%+4.60 ppHealth Care Equipment3.14%+3.13 ppManaged Health Care2.10%+2.10 ppBiotechnology2.08%+2.07 ppLife Sciences Tools & Services2.00%+2.00 ppHealth Care Services0.92%+0.91 ppHealth Care Distributors0.29%+0.29 ppHealth Care Supplies0.28%+0.28 ppHealth Care Facilities0.25%+0.25 ppHealth Care Technology0.00%+0.00 pp
3 · Sub-industry
Inside Health Care Equipment
Health Care Equipment · weight
3.14%
Industry change · 12M
+3.13 pp
Health Care Equipment · contribution
+3.134 pp
Company participation
100%
of industry constituents above their 6M weight average
4 · Companies driving this sub-industry
May 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 | $207.3bn | 0.743% | +0.318 pp | +0.742 pp | +24.7% | Yes |
| Medtronic → MDT | United States | $170.7bn | 0.611% | +0.297 pp | +0.611 pp | +31.3% | Yes |
| Stryker Corporation → SYK | United States | $96.2bn | 0.345% | +0.162 pp | +0.344 pp | +31.9% | Yes |
| Boston Scientific → BSX | United States | $60.5bn | 0.217% | +0.107 pp | +0.216 pp | +12.0% | Yes |
| Edwards Lifesciences → EW | United States | $59.6bn | 0.214% | +0.110 pp | +0.213 pp | +28.0% | Yes |
| Becton Dickinson → BDX | United States | $54.0bn | 0.193% | +0.086 pp | +0.193 pp | -0.7% | Yes |
| Idexx Laboratories → IDXX | United States | $47.6bn | 0.171% | +0.082 pp | +0.170 pp | +80.7% | Yes |
| Baxter International → BAX | United States | $41.3bn | 0.148% | +0.070 pp | +0.148 pp | -7.7% | Yes |
| Zimmer Biomet → ZBH | United States | $34.1bn | 0.122% | +0.056 pp | +0.122 pp | +34.2% | Yes |
| Intuitive Surgical → ISRG | United States | $33.2bn | 0.119% | +0.061 pp | +0.119 pp | +45.2% | Yes |
| ResMed| → RMD | United States | $30.0bn | 0.107% | +0.051 pp | +0.107 pp | +29.0% | Yes |
| Steris → STE | United States | $16.3bn | 0.058% | +0.029 pp | +0.058 pp | +16.4% | Yes |
| Revvity → RVTY | United States | $16.3bn | 0.058% | +0.030 pp | +0.058 pp | +44.7% | Yes |
| Dexcom → DXCM | United States | $8.9bn | 0.032% | +0.013 pp | +0.032 pp | -2.4% | 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.