Updated from 12:42 p.m. ET
Shares of Deckers Outdoor ( DECK) dropped 22.1%, or $11.72 to $41.27, after the shoemaker said it expected a lower profit in the first quarter. The company posted a 14% rise in fourth-quarter profit as revenue rose 56%. It also said it expects first-quarter revenue to increase about 22%, but that EPS will fall about 28% from 86 cents of the year-ago quarter. Analysts were expecting a first-quarter profit of 90 cents per share. Shares of athenahealth ( ATHN) traded 25.4% lower, down $8.67 to $25.50 despite the company reporting a fourth-quarter profit that surpassed expectations. Revenue rose revenues rose 47% year over to $41.4 million.