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
Pharmaceuticals3.38%-2.13 ppBiotechnology1.66%-1.72 ppHealth Care Equipment1.82%-1.01 ppManaged Health Care1.30%-0.65 ppLife Sciences Tools & Services0.96%-0.55 ppHealth Care Services0.33%-0.38 ppHealth Care Distributors0.22%-0.29 ppHealth Care Supplies0.08%-0.06 ppHealth Care Facilities0.16%-0.05 ppHealth Care Technology0.00%+0.00 pp
3 · Sub-industry
Inside Health Care Equipment
Health Care Equipment · weight
1.82%
Industry change · 12M
-1.01 pp
Health Care Equipment · contribution
-1.008 pp
Company participation
58%
of industry constituents above their 6M weight average
4 · Companies driving this sub-industry
Jan 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 |
|---|---|---|---|---|---|---|---|
| Medtronic → MDT | United States | $118.7bn | 0.392% | -0.020 pp | -0.272 pp | +4.7% | No |
| Abbott Laboratories → ABT | United States | $128.2bn | 0.423% | +0.012 pp | -0.194 pp | +19.5% | Yes |
| Stryker Corporation → SYK | United States | $66.4bn | 0.219% | +0.013 pp | -0.132 pp | +9.3% | Yes |
| Baxter International → BAX | United States | $38.6bn | 0.127% | +0.014 pp | -0.097 pp | +1.7% | Yes |
| Becton Dickinson → BDX | United States | $51.3bn | 0.169% | +0.009 pp | -0.073 pp | +4.0% | Yes |
| Zimmer Biomet → ZBH | United States | $21.7bn | 0.072% | -0.005 pp | -0.071 pp | -13.1% | No |
| Boston Scientific → BSX | United States | $52.8bn | 0.174% | +0.005 pp | -0.045 pp | +36.4% | Yes |
| ResMed| → RMD | United States | $13.6bn | 0.045% | -0.006 pp | -0.037 pp | -4.2% | No |
| Idexx Laboratories → IDXX | United States | $18.3bn | 0.061% | -0.002 pp | -0.033 pp | +13.8% | No |
| Intuitive Surgical → ISRG | United States | $19.9bn | 0.066% | -0.002 pp | -0.026 pp | +21.3% | No |
| Revvity → RVTY | United States | $10.1bn | 0.033% | +0.001 pp | -0.017 pp | +13.3% | Yes |
| Edwards Lifesciences → EW | United States | $11.9bn | 0.039% | +0.004 pp | -0.012 pp | +34.6% | 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.