Shares in leading Bitcoin mining companies saw a rise after Jane Street revealed its newly acquired holdings on Thursday, marking a continued months-long rally for publicly listed mining stocks.

On Friday, stocks of crypto miners surged, with Bitfarms, Cipher Mining, and Hut 8 extending their gains following the announcement that Jane Street had significant positions in all three companies. Filings made to the U.S. Securities and Exchange Commission showed that Jane Street’s trading affiliates hold approximately 5.4% stakes in Bitfarms, 5% in Cipher Mining, and 5% in Hut 8, indicating passive investments rather than active control.

As a result of this news, the stocks surged by 8% to 13% on Thursday and continued to rise on Friday. By market close on Friday, Bitfarms (BITF) saw a 10.68% increase, Cipher Mining (CIFR) climbed by 19.73%, and Hut 8 (HUT) rose by around 17.27%, based on data from Yahoo Finance.

Cipher Mining stock price. Source: Yahoo Finance

Other Bitcoin mining stocks also enjoyed gains on Friday, including American Bitcoin Corp. (up 11.29%), IREN Limited (up 12.60%), and Hive Digital Technologies (up 17.77%).

Jane Street, a prominent trading and market-making firm involved in both equities and digital assets, had previously disclosed its exposure to Bitcoin miners in 2023 through investments in Marathon Digital (MARA).

The announcement from Jane Street follows Google’s recent acquisition of a 5.4% share in Cipher Mining.

Bitcoin Mining Companies Outperform Bitcoin in 2025

Bitcoin mining is critical for maintaining the security and functionality of the network, involving complex calculations performed by specialized hardware.

Although individual miners occasionally strike lucky and successfully mine a block, the industry remains predominantly controlled by Bitcoin mining corporations, many of whom have experienced substantial growth this year.

Over the last 12 months, many Bitcoin mining firms have outperformed Bitcoin itself: data reveals that Bitfarms has surged nearly 131%, while Hut 8’s value has increased by approximately 211% over the past year. In comparison, Bitcoin’s price has risen by about 73% over the last year.