Plug Power (PLUG) stock was down more than 13% on Wednesday after the hydrogen fuel cell and electrolyzer systems company announced a $375 million convertible notes offering. In its press release, the Latham-headquartered firm said it will use net proceeds from this offering to primarily to refinance as much as 15% of its expensive debt. More News from Barchart Following today’s plunge, Plug Power shares are trading well over 50% below their October high. www.barchart.com Why Is the Offering Negative ...