Bitzero Holdings is trading at $3.04, up 5.56% in after-hours trading; no company-specific announcement explaining the move was identified. - It closed the regular session at $2.88 on October 30, after several volatile sessions. - Reuters reported that the Binance security breach pressured cryptocurrency prices and crypto-linked shares earlier on October 30, but did not mention Bitzero Holdings. - The provided after-hours crypto changes are modest and do not clearly explain the rebound.