Stocks making the biggest moves midday: Hostess Brands, AT&T, Tesla & more

Stocks making the biggest moves midday: Hostess Brands, AT&T, Tesla & more

, — The pair of stocks were volatile on Monday after the company's announced a $43 billion deal to . Discovery's A shares popped at the open but were down 3.8% in midday trading. AT&T was up about 1% but off of session highs. Before the official announcement, Citi Discovery to buy. — Shares of the home furnishing retailer jumped 2.9% after the company's largest shareholder CAS Investment Partners said it will oppose the deal to sell the firm to private equity firm Hellman & Friedman for $2.4 billion, the Wall Street Journal reported. CAS Investment Partners, which owns about 17% of At Home Group, said the bid "grossly undervalues" the company. — The energy stock jumped more than 2% after the company announced a modified Dutch auction tender offer for up to $4 billion of its common shares. Meanwhile, top Federal Trade Commission officials said Marathon Petroleum's sale of Speedway gas stations to the parent of the 7-11 chain may be illegal on competitive grounds. The $21 billion deal closed on Friday, but the officials say they will continue to investigate. — Shares of Tesla, down 27% over the last three months, shed 2.4% in midday trading after CEO