Today's Health Winners and Losers

Shares of FoxHollow Technologies(FOXH Quote) were among the worst-performing health-related stocks Friday, tumbling 15% after the medical device maker posted a wider first-quarter loss and warned that second-quarter results would be below expectations.

The company reported a loss of $14.6 million, or 60 cents a share, on revenue of $46.6 million. Excluding stock-based compensation costs and a charge related to the retirement of its CEO, the company earned $155,000, or 1 cent a share. Analysts polled by Thomson First Call expected a loss of 22 cents a share, including the charges, on revenue of $45.4 million. During the year-earlier period, the company posted a loss of $6.5 million, or 29 cents a share, on revenue of $21.5 million.

FoxHollow forecast a second-quarter loss of 12 cents to 16 cents a share, with revenue of $46 million to $48 million. Excluding stock-based compensation costs, the company projects results ranging from a loss of 2 cents a share to a profit of 2 cents a share. Analysts expect a loss of 5 cents a share, including stock-based compensation costs, on revenue of $50.8 million. FoxHollow shares were down $4.55 to $26.65.

Medco Health(MHS Quote) rose 5% after the pharmacy benefit manager posted better-than-expected first-quarter results. The company earned $44.8 million, or 15 cents a share, up from $131.2 million, or 47 cents a share, a year earlier. Excluding items, Medco earned 56 cents a share, a penny better than analysts' mean estimate. Revenue jumped to $10.56 billion from $8.74 billion, topping analysts' forecast of $10.26 billion.

For 2006, Medco continues to expect earnings, excluding items, of $2.57 to $2.64 a share. Analysts project earnings of $2.58 a share. Shares were trading up $2.37 to $53.14.

Shares of McKesson(MCK Quote) rose 4% after the health care services company in-line fourth-quarter earnings on better-than-expected revenue. The company earned $220 million, or 70 cents a share, on revenue of $23.06 billion. Excluding a litigation gain of $5 million, the company earned $215 million, or 68 cents a share. Analysts expected earnings of 68 cents a share on revenue of $22.35 billion. During the year-earlier period, the company earned $259 million, or 85 cents a share, on revenue of $20.51 billion.