Bitcoin Miners Break $50B Market Cap Barrier as Stocks Outperform BTC

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The collective market capitalization of U.S.-listed Bitcoin miners has surged past the $50 billion milestone for the first time, according to a new report from JPMorgan.

The Wall Street bank revealed that the combined value of the fourteen miners it tracks jumped 43% in September, reaching $56 billion.

Bitcoin Mining Stocks Surge in September

JPMorgan analysts Reginald Smith and Charles Pearce attributed the sharp increase to a wave of corporate developments that boosted investor sentiment.

Cipher Mining (NASDAQ: CIFR) announced a high-performance computing (HPC) colocation deal with Fluidstack, while IREN (NASDAQ: IREN) expanded its Cloud Services business. These moves signaled strong diversification strategies among mining firms, fueling bullish momentum across the sector.

Notably, Bitfarms (BITF) led the rally with an eye-popping 115% monthly gain.

Bitfarms share price (Source: Google Finance)

In contrast, Cango (CANG) lagged behind, losing 11% over the same period. Overall, twelve of the fourteen tracked miners managed to outperform Bitcoin itself in September, underlining the strength of mining equities as leveraged plays on BTC price action.

BTC monthly performance (Source: CoinMarketCap)

Rising Hashrate Pressures Profitability

While valuations soared, operational metrics painted a more complex picture. The average Bitcoin hashrate rose by approximately 82 EH/s (+9%) month-over-month, climbing to 1,031 EH/s in September. The surge in computational power highlights the ongoing arms race among miners competing for block rewards.

However, higher hashrate levels have begun to weigh on profitability. JPMorgan estimates that miners earned an average of $49,700 per EH/s in daily block reward revenue, down 10% from August. Daily block reward gross profits also slipped 17% month-over-month, marking the second consecutive decline in mining profitability.

Market Outlook for Bitcoin Miners

Despite the profitability squeeze, equity markets are rewarding miners for growth, diversification, and scale. With Bitcoin trading above $117,000, mining companies are increasingly viewed as strategic infrastructure providers rather than pure commodity plays.

The recent upswing in valuations suggests investors are betting that miners will play an outsized role in supporting the Bitcoin network as adoption deepens. Still, JPMorgan’s analysts caution that sustained hashrate growth without a corresponding rise in BTC’s price could keep pressure on margins in the months ahead.

Author

Steven Walgenbach

Steven's passion for cryptocurrency and blockchain technology began in 2014, inspiring him to immerse himself in the field. He notably secured a top 5 world ranking in robotics. While he initially pursued a computer science degree at the University of Texas at Arlington, he chose to pause his studies after two semesters to take a more hands-on approach in advancing cryptocurrency technology. During this period, he actively worked on multiple patents related to cryptocurrency and blockchain. Additionally, Steven has explored various areas of the financial sector, including banking and financial markets, developing prototypes such as fully autonomous trading bots and intuitive interfaces that streamline blockchain integration, among other innovations.

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