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
Pharmaceuticals3.30%-2.20 ppBiotechnology1.76%-1.62 ppHealth Care Equipment1.80%-1.03 ppManaged Health Care1.25%-0.70 ppLife Sciences Tools & Services0.93%-0.58 ppHealth Care Services0.38%-0.32 ppHealth Care Distributors0.23%-0.28 ppHealth Care Facilities0.15%-0.05 ppHealth Care Supplies0.11%-0.03 ppHealth Care Technology0.00%+0.00 pp
3 · Sub-industry
Inside Health Care Equipment
Health Care Equipment · weight
1.80%
Industry change · 12M
-1.03 pp
Health Care Equipment · contribution
-1.028 pp
Company participation
0%
of industry constituents above their 6M weight average
4 · Companies driving this sub-industry
Aug 2018 · 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 | $130.2bn | 0.420% | -0.290 pp | -0.243 pp | +13.6% | No |
| Abbott Laboratories → ABT | United States | $117.3bn | 0.378% | -0.276 pp | -0.239 pp | +8.5% | No |
| Stryker Corporation → SYK | United States | $63.4bn | 0.205% | -0.190 pp | -0.146 pp | +3.7% | No |
| Baxter International → BAX | United States | $39.7bn | 0.128% | -0.102 pp | -0.096 pp | +4.0% | No |
| Becton Dickinson → BDX | United States | $53.7bn | 0.173% | -0.102 pp | -0.069 pp | +8.5% | No |
| Zimmer Biomet → ZBH | United States | $24.4bn | 0.079% | -0.055 pp | -0.064 pp | -2.3% | No |
| Boston Scientific → BSX | United States | $49.2bn | 0.159% | -0.096 pp | -0.060 pp | +27.2% | No |
| ResMed| → RMD | United States | $15.9bn | 0.051% | -0.038 pp | -0.031 pp | +11.7% | No |
| Intuitive Surgical → ISRG | United States | $21.2bn | 0.069% | -0.037 pp | -0.023 pp | +29.7% | No |
| Idexx Laboratories → IDXX | United States | $22.0bn | 0.071% | -0.039 pp | -0.022 pp | +35.8% | No |
| Edwards Lifesciences → EW | United States | $10.1bn | 0.032% | -0.026 pp | -0.018 pp | +14.0% | No |
| Revvity → RVTY | United States | $10.2bn | 0.033% | -0.017 pp | -0.017 pp | +15.5% | No |
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.