Monday's Mid-Day Movers: Williams Companies, GoPro, Ambarella And More

Following last week’s rally, Monday had many notable gainers and losers for the session.

Winners

Williams Companies Inc WMB shares rallied to an all-time high, soaring $12.37 to $60.71 per share (25.59 percent increase). The catalyst was that WMB rejected a $64 per share bid from Energy Transfer Equity LP ETE. The deal would have totaled to $53.1 billion.

Shares of CIGNA Corporation CI jumped $9.73 to $164.99, nearly a 7 percent increase. The health insurer also rejected an offer, this from Anthem Inc ANTM, which offered $184 per share, totaling to $48 billion.

Fitbit Inc FIT shot up $6.30 to $38.79, a 19.43 percent hike. The stock has risen more than 50 percent since IPOing last week.

Shares of Epizyme Inc EPZM were soaring nearly 30 percent to $26.98 after announcing beneficial and encouraging data from a phase I trial of tazemetostat (EPZ-6438), showing meaningful clinical activity when used as an oral monotherapy.

Uranium Energy UEC, up 26 percent, stock fell ~5 percent on Thursday of last week following a negative report from thestreetsweeper.org. Shares continued sharply lower on Friday despite an official response from the company saying the allegations having “absolutely no merit,” and are “unfounded.” UEC shares are continuing to rebound from Friday's lows. There has not been any news issued by the company over the last two trading sessions.

Shares of Facebook Inc FB heightened to $84.38, up from previous close of $82.51. Facebook is reportedly gaining on YouTube’s video views, and should have two-thirds of YouTube’s views in 2015, according to Ampere Analysis.

Losers

Shares of Ambarella Inc AMBA sunk $21.78 to $97.57, a 18.5 percent decrease due to some bearish calls from some short-selling firms. Citron Research has stated that the share price of Ambarella is currently “ridiculous,” and has cut its targeted price down to $60 per share, nearly half of what the stock previously closed at.

Following Ambarella’s slide, GoPro Inc GPRO is also dwindling. Shares of GoPro slid down $2.75 to $55.22 due to the decrease in Ambarella.

Martha Stewart Living Omnimedia, Inc. MSO shares sunk to $6.09, down $0.89 due to news that Sequential Brand will acquire the global lifestyle company for only $353 million ($6.15 per share), down nearly 12 percent from previous close.

Shares of Magnum Hunter Resources Corporation MHR were down 12 percent as some of the energy related stocks declined due to lower oil prices.