Quick Summary
- Shares of major Bitcoin mining companies, including Bitfarms, Cipher Mining, and Hut 8, saw significant price increases following disclosures of passive stakes by trading firm Jane Street.
- Jane Street’s filings revealed ownership stakes of approximately 5.4% in Bitfarms, 5% in Cipher Mining, and 5% in Hut 8.
- This news triggered double-digit percentage gains for Bitfarms, Cipher Mining, and Hut 8 on Friday, with other crypto miner stocks also experiencing positive movement.
- The trend highlights increasing institutional interest in the Bitcoin mining sector, building on recent investments from entities like Google in Cipher Mining.
- Analysis of 2025 performance indicates Bitcoin mining companies have often outperformed Bitcoin itself, with substantial year-over-year gains for firms like Bitfarms and Hut 8.
Jane Street’s Disclosure Sparks Surge in Crypto Miner Stocks
Crypto mining stocks experienced a notable rally on Friday, with key players like Bitfarms, Cipher Mining, and Hut 8 extending their gains. This upward trend was largely attributed to disclosures from the trading firm Jane Street, which revealed significant passive positions in these Bitcoin mining companies.
SEC filings submitted on Thursday indicated that Jane Street’s trading affiliates hold approximately 5.4% of Bitfarms, 5% of Cipher Mining, and 5% of Hut 8. These holdings are characterized as passive trading positions, distinguishing them from activist investor stakes.
Following the announcement of these disclosures, the stocks saw an immediate positive reaction, with gains ranging from 8% to 13% on Thursday. The momentum continued into Friday, further boosting investor confidence in the sector.
By the market close on Friday, Bitfarms (BITF) had surged by 10.68%, Cipher Mining (CIFR) saw an impressive increase of 19.73%, and Hut 8 (HUT) climbed by approximately 17.27%, according to data from Yahoo Finance.
Broader Market Impact and Sector Performance
The positive performance extended beyond the three main companies with Jane Street’s disclosed holdings. Bitcoin mining stocks also posted gains on Friday, reflecting a broader uplift across the sector. Notable performers included American Bitcoin Corp., which rose by 11.29%, IREN Limited with a gain of 12.60%, and Hive Digital Technologies, which jumped 17.77%.
Jane Street, a prominent proprietary trading and market-making firm with active involvement in both equities and digital assets, first revealed its exposure to Bitcoin miners in 2023. At that time, the firm disclosed an investment in Marathon Digital Holdings (MARA).
The recent disclosure from Jane Street arrives shortly after Google announced its acquisition of a 5.4% stake in Cipher Mining on September 25, signaling growing institutional interest and strategic investments within the Bitcoin mining space.
Bitcoin Mining Companies Outperform Bitcoin in 2025
Bitcoin mining is the foundational process that verifies transactions and introduces new Bitcoin into circulation, crucial for the operational integrity and security of the Bitcoin network. This process involves specialized computers solving complex mathematical problems.
While individual miners may occasionally achieve the luck of mining a block, the industry has increasingly been dominated by large-scale Bitcoin mining companies. Many of these companies have exhibited substantial growth throughout 2025.
Over the past year, a significant number of Bitcoin mining companies have demonstrated stronger performance compared to Bitcoin itself. This suggests a robust growth phase for the mining sector.
Data from Yahoo Finance highlights this trend, showing that Bitfarms has increased by nearly 131%, and Hut 8 has seen a rise of approximately 211% over the past 12 months. In comparison, Bitcoin’s price has appreciated by about 73% over the same one-year period.
Expert Summary
The recent surge in Bitcoin mining stocks, driven by Jane Street’s substantial disclosures, underscores increasing institutional confidence in the sector. With companies like Bitfarms, Cipher Mining, and Hut 8 showing strong performance metrics, the Bitcoin mining industry continues to present compelling opportunities.