() – Ensco Rowan Plc investor Luminus Management on Wednesday urged the deep-sea oil driller to sell guaranteed bonds to fund a special dividend of $2.5 billion, citing the stock’s “disappointing” performance despite a recent acquisition. Shares of Ensco Rowan – formed after Ensco bought Rowan in April for $2.38 billion – fell more than 7% to their lowest in more than two decades, amid a broader drop in energy stocks as crude prices plunged about 2%. “Extremely disappointed by the absolute and relative trading performance of Ensco Rowan both before, and since, consummation of the Ensco-Rowan merger,” Luminus said in a letter to Ensco Rowan’s board. A commitment to pay out the dividend should lead to an immediate re-rating of the stock, according to Luminus, an investment advisor to funds that own 4.5% of Ensco Rowan. Ensco Rowan’s shares have more than halved in value since the merger closed on April 11. They fell to a low of $7.02, giving the company a market value of about $1.40 billion. Ensco Rowan, which last month scrapped its regular quarterly cash dividend, did not immediately respond to a request for comment. Reporting by Arundhati Sarkar in Bengaluru; Editing by Shailesh Kuber and Sriraj KalluivlaOur Standards:The Thomson Trust Principles.