As the market capitalization of companies constantly changes, it is not possible to provide an up-to-date list. However, here is a list of the top 10 healthcare companies by market capitalization as of July 2021:
1. Johnson & Johnson (Market Cap: $435.19 billion)
2. Pfizer Inc. (Market Cap: $207.84 billion)
3. Eli Lilly and Company (Market Cap: $197.22 billion)
4. Merck & Co., Inc. (Market Cap: $194.45 billion)
5. Abbott Laboratories (Market Cap: $190.32 billion)
6. Novartis AG (Market Cap: $191.12 billion)
7. AbbVie Inc. (Market Cap: $190.92 billion)
8. Amgen Inc. (Market Cap: $154.37 billion)
9. Bristol-Myers Squibb Company (Market Cap: $142.71 billion)
10. AstraZeneca PLC (Market Cap: $123.13 billion)
Please note that these rankings may change over time due to fluctuations in the stock market.