U.S. Treasury Secretary Scott Bessent on Thursday said he may increase again the volume of Treasury bonds the government will repurchase, a day after surprising the market with plans to double them. “We’re going to increase the size of the buyback,” Bessent said in a CNBC interview. “I would note that it could be more than the $4 billion per issue.” The Treasury on Wednesday announced that it would double the size of buybacks on longer-dated securities over the next quarter to at least $4…