Key TakeawaysRegeneron shares were lower ahead of the opening bell Thursday morning after the DOJ filed a complaint accusing the drugmaker of manipulating Medicare’s drug pricing process.The DOJ Alleges the company failed to report credit card fees that it paid distributors.Regeneron shares may find support around $915 from a nine-month trendline. A breakdown below this level could see a retest of a key horizontal line near $835. Shares in biotech giant Regeneron Pharmaceuticals (REGN) go under the microsco ...