Click to view a price quote on XLE. : Shares of dialysis service provider American Renal Associates  (ARA) - Get Report jumped over 67% Friday after the company entered a definitive agreement to be acquired by Innovative Renal Care, a unit of private equity firm Nautic Partners. The all-cash deal values ARA at $853 million, the company said. The shareholders at ARA, backed by Centerbridge Partners, will receive $11.50 per share in cash, a premium of 66% to ARA's closing price on Oct. 1, as per the terms of the agreement.