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
Pharmaceuticals6.36%+0.62 ppBiotechnology3.09%+0.60 ppManaged Health Care2.45%+0.51 ppHealth Care Equipment3.59%+0.40 ppLife Sciences Tools & Services2.01%+0.20 ppHealth Care Services1.07%+0.14 ppHealth Care Supplies0.12%-0.05 ppHealth Care Facilities0.21%-0.03 ppHealth Care Distributors0.37%+0.02 ppHealth Care Technology0.00%+0.00 pp
3 · Sub-industry
Inside Health Care Equipment
Health Care Equipment · weight
3.59%
Industry change · 12M
+0.40 pp
Health Care Equipment · contribution
+0.400 pp
Company participation
100%
of industry constituents above their 6M weight average
4 · Companies driving this sub-industry
Apr 2020 · 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 | $162.9bn | 0.912% | +0.151 pp | +0.133 pp | +17.6% | Yes |
| Medtronic → MDT | United States | $130.8bn | 0.732% | -0.031 pp | +0.069 pp | +12.3% | Yes |
| Steris → STE | United States | $12.1bn | 0.068% | +0.005 pp | +0.068 pp | +9.8% | Yes |
| ResMed| → RMD | United States | $22.5bn | 0.126% | +0.012 pp | +0.042 pp | +50.3% | Yes |
| Baxter International → BAX | United States | $45.2bn | 0.253% | +0.028 pp | +0.035 pp | +17.6% | Yes |
| Idexx Laboratories → IDXX | United States | $23.6bn | 0.132% | +0.017 pp | +0.021 pp | +19.7% | Yes |
| Becton Dickinson → BDX | United States | $52.5bn | 0.294% | +0.012 pp | +0.017 pp | +6.2% | Yes |
| Edwards Lifesciences → EW | United States | $15.0bn | 0.084% | +0.008 pp | +0.016 pp | +23.5% | Yes |
| Boston Scientific → BSX | United States | $52.3bn | 0.293% | +0.005 pp | +0.005 pp | +1.0% | Yes |
| Revvity → RVTY | United States | $10.1bn | 0.056% | +0.006 pp | -0.003 pp | -5.2% | Yes |
| Stryker Corporation → SYK | United States | $69.8bn | 0.391% | +0.002 pp | -0.003 pp | -0.2% | Yes |
| Zimmer Biomet → ZBH | United States | $24.0bn | 0.134% | -0.011 pp | -0.002 pp | -2.0% | Yes |
| Intuitive Surgical → ISRG | United States | $19.9bn | 0.111% | +0.005 pp | +0.002 pp | +0.0% | 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.