3 Healthcare Stocks at All-Time Highs: Are They Buys?

Healthcare stocks, in general, are badly underperforming the S&P 500 so far this year. In fact, the S&P 500 index has delivered a year-to-date return that triples the return of the Health Care Select Sector Index, which consists only of healthcare stocks in the S&P 500.

As always, though, there are exceptions. Three healthcare stocks are not only beating the S&P 500 this year, they're at all-time highs. AstraZeneca (NYSE: AZN), Baxter International (NYSE: BAX), and Zoetis (NYSE: ZTS) are sizzling hot right now. But are these hot healthcare stocks smart picks for investors to buy?

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Source Fool.com