DocuSign's (NASDAQ:DOCU) M&A premium is likely now baked into the stock, presenting risk if no deal happens, according to a Wells Fargo analyst. The note comes after Bloomberg reported on Thursday that banks are in talks to provide financing for a $13 billion purchase of the electronic-signature firm. JPMorgan Chase and Bank of America are in talks for financing. DocuSign fell 1.5% on Friday after dropping 3.3% in the wake of the deal price news.