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Oct 24, 2025 4:00 AM

Jane Street Takes 5% Stake In BTC Miner Cipher Mining That Eric Jackson Bet On

Cipher Mining Inc. (NASDAQ:CIFR) has captured the market’s attention after quantitative trading behemoth Jane Street Group, LLC disclosed a 5% passive stake in the company. The Schedule 13G filing, detailing an aggregate 19.68 million share position, was first highlighted in an SEC filing dated Oct. 24.

CIFR surged after-hours. Check out the price here.

Eric Jackson, Daniel Newman Make A Bullish Case For CIFR

Jane Street’s move comes amid a fierce debate over CIFR’s valuation, which has been bet on by prominent bulls, including Eric Jackson of EMJ Capital. Not only CIFR, but Jane Street also disclosed a 5% stake in Hut 8 Corp. (NASDAQ:HUT) as per its SEC filing, just after Jackson announced a new long position in that firm.  

Bitcoin Miners – AI Data Center Co-Location Deal Comparison $CIFR $WULF $APLD $GLXYA few interesting observations based on a comparison of the deals announced by Cipher $CIFR, TeraWulf $WULF, Applied Digital $APLD, and Galaxy Digital $GLXY:– Galaxy has the only "triple-net"… pic.twitter.com/7KpvBaQSBo

— Rittenhouse Research (@RHouseResearch) September 26, 2025

This investor group, which also includes the CEO of Futurum Group, Daniel Newman, is reframing CIFR from a Bitcoin miner into a key “AI utility powerhouse.”

Newman has publicly called CIFR his “#1 AI utility play,” citing the company’s $5 billion market cap, $1.3 billion in ...