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
Pharmaceuticals3.37%-2.13 ppBiotechnology1.75%-1.63 ppHealth Care Equipment1.86%-0.96 ppManaged Health Care1.24%-0.72 ppLife Sciences Tools & Services0.95%-0.56 ppHealth Care Services0.39%-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
1.86%
Industry change · 12M
-0.96 pp
Health Care Equipment · contribution
-0.964 pp
Company participation
0%
of industry constituents above their 6M weight average
4 · Companies driving this sub-industry
Sep 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 | $132.8bn | 0.423% | -0.279 pp | -0.240 pp | +15.9% | No |
| Abbott Laboratories → ABT | United States | $128.7bn | 0.410% | -0.239 pp | -0.207 pp | +19.1% | No |
| Stryker Corporation → SYK | United States | $66.5bn | 0.212% | -0.171 pp | -0.139 pp | +9.0% | No |
| Baxter International → BAX | United States | $41.2bn | 0.131% | -0.109 pp | -0.093 pp | +7.8% | No |
| Becton Dickinson → BDX | United States | $53.6bn | 0.171% | -0.127 pp | -0.072 pp | +8.5% | No |
| Zimmer Biomet → ZBH | United States | $26.0bn | 0.083% | -0.051 pp | -0.060 pp | +4.1% | No |
| Boston Scientific → BSX | United States | $53.2bn | 0.170% | -0.104 pp | -0.049 pp | +37.7% | No |
| ResMed| → RMD | United States | $16.5bn | 0.052% | -0.037 pp | -0.030 pp | +15.7% | No |
| Idexx Laboratories → IDXX | United States | $21.6bn | 0.069% | -0.046 pp | -0.024 pp | +33.5% | No |
| Intuitive Surgical → ISRG | United States | $21.8bn | 0.069% | -0.040 pp | -0.023 pp | +33.0% | No |
| Revvity → RVTY | United States | $10.8bn | 0.034% | -0.015 pp | -0.016 pp | +21.6% | No |
| Edwards Lifesciences → EW | United States | $12.2bn | 0.039% | -0.023 pp | -0.012 pp | +37.5% | 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.