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
Pharmaceuticals6.10%+0.50 ppBiotechnology2.70%-0.49 ppHealth Care Equipment3.38%+0.45 ppLife Sciences Tools & Services1.87%+0.34 ppHealth Care Services0.95%+0.32 ppManaged Health Care2.12%+0.22 ppHealth Care Distributors0.36%-0.11 ppHealth Care Facilities0.26%+0.05 ppHealth Care Supplies0.15%+0.01 ppHealth Care Technology0.00%+0.00 pp
3 · Sub-industry
Inside Health Care Equipment
Health Care Equipment · weight
3.38%
Industry change · 12M
+0.45 pp
Health Care Equipment · contribution
+0.453 pp
Company participation
100%
of industry constituents above their 6M weight average
4 · Companies driving this sub-industry
Mar 2019 · 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 | $140.4bn | 0.807% | +0.352 pp | +0.165 pp | +35.8% | Yes |
| Boston Scientific → BSX | United States | $53.2bn | 0.306% | +0.131 pp | +0.075 pp | +40.5% | Yes |
| Stryker Corporation → SYK | United States | $73.6bn | 0.423% | +0.213 pp | +0.053 pp | +24.2% | Yes |
| Medtronic → MDT | United States | $122.2bn | 0.702% | +0.265 pp | +0.035 pp | +15.5% | Yes |
| Intuitive Surgical → ISRG | United States | $21.8bn | 0.125% | +0.060 pp | +0.030 pp | +38.2% | Yes |
| Becton Dickinson → BDX | United States | $51.5bn | 0.296% | +0.130 pp | +0.025 pp | +16.7% | Yes |
| Baxter International → BAX | United States | $41.7bn | 0.239% | +0.114 pp | +0.024 pp | +26.3% | Yes |
| Edwards Lifesciences → EW | United States | $13.3bn | 0.076% | +0.038 pp | +0.016 pp | +37.1% | Yes |
| Zimmer Biomet → ZBH | United States | $25.3bn | 0.146% | +0.072 pp | +0.014 pp | +18.1% | Yes |
| Revvity → RVTY | United States | $10.7bn | 0.061% | +0.030 pp | +0.010 pp | +27.7% | Yes |
| Idexx Laboratories → IDXX | United States | $19.2bn | 0.110% | +0.053 pp | +0.008 pp | +16.8% | Yes |
| ResMed| → RMD | United States | $14.9bn | 0.086% | +0.028 pp | -0.001 pp | +7.1% | 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.