bristol myers squibb co on wednesday said it plans to buy back 5 billion in common stock under accelerated sharerepurchase agreements with morgan stanley  co barclays bank plc citibank na and jpmorgan chase bank na the new york biopharmaceutical company said it expects to fund the repurchases which are part of its 15 billion multiyear buyback program with cash on hand bristol myers which has around 22 billion shares outstanding and sports a market capitalization of nearly 147 billion said it will receive about 85 of the shares to be repurchased under the transactions on wednesday with the total number of shares ultimately repurchased to be determined upon final settlement expected during the second and third quarters bristol myers said it will have about 102 billion of sharerepurchase authorization remaining after giving effect to the accelerated buyback