Adam Sullivan left investment banking to mine bitcoin at an awkward time. It was May 2023, bitcoin was trading at around $21,000, U.S. regulators were in the thick of cracking down on the sector writ large, and Core Scientific the company he had agreed to take over, was battling angry lenders in a Texas bankruptcy court over tens of millions of dollars in outstanding debt.
But Sullivan knew that, with a lifeline, he could get the business to a much better place. That’s because the halving was on the way, and with it would likely come a big rally in bitcoin.
Late Friday night, the bitcoin code automatically cut new issuance of the world’s largest cryptocurrency in half. It happens roughly every four years, and in addition to helping to stave off inflation, it historically precedes a major run-up in the price of bitcoin.
The technical event is relatively simple: Bitcoin miners get paid in bitcoin to validate transactions, and after 210,000 blocks of transactions are computed and added to the main chain, the reward given to the miners securing bitcoin is ‘halved.’
There are more than a dozen publicly traded miners on the network and thousands of smaller, private ones around the globe, constantly racing to process transactions and get paid in new bitcoin. Because the event leads to a cut to rewards paid to miners directly, they’ll be the first ones to feel the impact of the halving.
That rapid price increase has helped many miners stave off the worst since it tends to offset the impact of having the block prize cut in half.
“As a company that was already in the process of scaling our infrastructure during the previous halving, we know the toll that halvings can take on a company if it is not adequately prepared,” Core’s Sullivan told CNBC.
The aggregate market cap of the 14 U.S.-listed bitcoin miners tracked by JPMorgan analysts, which accounts for around 21% of the global Bitcoin network, declined 28% over the first half of April to $14.2 billion, reaching year-to-date lows. Bitdeer was the best-performing stock over the period, down around 20%, versus Stronghold Digital, which was 46% lower.
Some have billed the 2024 bitcoin halving as a seminal moment for the mining sector. Depending on how much prep work miners have done, it could easily make or break them.
“Being prepared for a halving means evaluating all of your power strategies, all of your software capabilities, all of your operations,” continued Sullivan. Others are less concerned given recent price moves in bitcoin.
In a research note from Needham on Apr. 16, analysts said they expect the halving to only have a modest impact to miners’ estimated EBITDA margins, despite the 50% reduction in revenue, since the price of bitcoin has been trading in the range of $60,000 to $70,000.
“We expect geopolitical tensions and interest rate policy to be the biggest near-term drivers of crypto price action,” Needham analysts wrote, adding that at a bitcoin price above $60,000, the halving is “derisked for nearly all public miners.”
The bank did, however, single out their preference for low-cost bitcoin producers like Riot Platforms, Bitdeer, and Cipher Mining. Meanwhile, if bitcoin prices fall, Needham says the most outsized native impact will be felt by higher cost producers that are also levered to higher bitcoin prices via large treasury holdings.
Analysts from JPMorgan echoed a similar sentiment, writing in an Apr. 16 research note that they think “recent weakness offers an attractive entry point” for investors and that they are “especially bullish” on Riot, which they believe offers attractive relative valuations.
Years spent bracing for the halving
Miners have had years to prepare for the halving, including seeking lower power costs and upgrading their fleets to more efficient machines.
“Bitcoin’s halving happens like clockwork every four years,” said Haris Basit, chief strategy officer of Bitdeer Technologies Group. “It’s a known variable that is a benchmark for us to remain focused on operational excellence.”
To that end, the Singapore-headquartered mining firm has invested in new data centers, but its core strategy has been to increase vertical integration through research and development. 25% of its staff is focused on R&D efforts, which Basit says have “led to new innovations and revenue pathways, such as our recently announced 4nm mining rigs and AI Cloud offerings.”
Analysts at Cantor Fitzgerald recently named Bitdeer as having one of the industry’s lowest “all-in” cost-per-coin. Greg Beard, the CEO and Chairman of Stronghold Digital Mining, tells CNBC that miners whose only lever is more efficient machines will be at a disadvantage.
“Miners who own their low-cost power are better positioned,” said Beard. “Operational costs will be lower, allowing them to be more flexible with their capital.”
Core’s Sullivan agrees, noting that bitcoin mining data centers in the future will work hand-in-glove with power generators and grid operators to serve as a virtual battery for grid operators – allowing them to increase base load, curtail bitcoin data centers when they need to, and avoid peak generation loads, which he says are dirty and expensive.
“We own and operate our infrastructure, giving us greater control over operational and strategic decisions, such as the potential to expand into high-performance computing hosting,” said Sullivan.
Core Scientific, which launched in 2017 and now manages seven mining sites in five U.S. states, also owns the full technology stack. The company has been looking to diversify its revenue streams beyond purely bitcoin. Sullivan says that existing data centers offer reconfiguration opportunities to accommodate new types of high-value compute.
Certain data centers are located in close proximity to major metropolitan areas, making them candidates for low-latency, high-value compute applications,” said Core’s CEO.
“Our new Corsicana Facility was energized just this week, and we will be significantly scaling up our hash rate with next-generation equipment at that new site over the remainder of the year,” said Les. “As a result, we are positioned to mine more bitcoin per day at the end of the year than we do today, despite the halving.”
Marathon Digitalwhich has seen its stock rise more than 70% in the last year, took a different approach to scaling the business than its rivals. CEO Fred Thiel tells CNBC that the company grew quickly using an asset-light approach, where Capex was spent on mining rigs rather than infrastructure.
“In December, we owned less than 5% of the sites where we were hosting our miners,” said Thiel. “Today we now own 53% of our total 1.1 gigawatts of capacity, having purchased it at less than the build and replacement cost.”
Owning sites lowers Marathon’s cost to mine by up to 20% on a marginal cost basis. Thiel also noted that by the end of 2024, Marathon expects to further improve efficiency by 10% to 15% as they deploy the next generation rigs across their new sites.
That boost to efficiency isn’t just about new gear, however. The firm is deploying its own custom firmware, which allows it to operate even more efficiently.
Marathon, along with other mining firms, has begun diversifying its business model into ancillary operations beyond purely bitcoin mining, as well.
Thiel says the company recently launched an energy harvesting division, where they are compensated for converting stranded methane and bio-mass into energy, which they then sell heat back into an industrial or commercial process. The service essentially subsidizes and lowers Marathon’s cost to mine significantly. The company expects this new business line to generate a significant portion of its revenues by the halving in 2028.
