Cipher Mining Inc. (NASDAQ:CIFR) fell more than 20% intraday Monday to its lowest level since the Bitcoin-related company went public in August via a SPAC merger. The firm, which has given up nearly 40% in four sessions, apparently added to its losses Monday on word it had filed a shelf-registration authorizing PIPE and early investors to sell their shares over time. CIFR fell to as low as $6.17 during the session before partly recovering to change hands at $6.25 shortly before 2 p.m. ET. That’s down 20.8% on the day, as well as 39.1% from the $10.26 the stock closed at on Oct. 6. All in, CIFR has shed 59.4% from the $15.39 that the stock peaked at intraday on Sept. 17. It’s also nearly 40% below the $10.02 where Good Works Acquisition Co. − the SPAC that took the company public − ended at on Aug. 25, its final