reported that Sanofi "has held talks with bankers about possible deals," and could raise more than $20 billion, according to one analyst's estimate.
The speculation could have added resonance after a recent
by drug giant
, as more of the big pharma firms face an impending onslaught of generic drugs and not enough new drugs in their pipelines to keep up.
Bristol shares were up 3% to $22.05 in recent trading Monday.