In a challenging environment for bitcoin mining and miners, MARA Holdings relied on self-owned benefits to set new personal best records in May. The digital energy and infrastructure company captures the full value of bitcoin blocks it produces and wins, a boon for the company and investors alike.
“May was a record-breaking month for MARA with 282 blocks won, a 38% increase over April and a new monthly high," Fred Thiel, Chairman and CEO of MARA, announced in a May bitcoin mining operations press release. The May gains brought the company’s total bitcoin holdings to over 49,000.
MARA is the only bitcoin miner that owns and operates it owns mining pool. This leads to increased efficiency and it also means that the company retains the full value of bitcoin blocks mined. Other publicly owned bitcoin mining companies generally owe fees for any operations outsourced. MARA also boasts its own fully-integrated technology stack, further increasing efficiency.
“We remain laser-focused on transforming MARA into a vertically integrated digital energy and infrastructure company,” explained Thiel. “We believe this model gives us tighter operational control, improves cost-efficiency, and makes us more resilient to shifts in the broader economy.”
The bitcoin miner further drives down energy costs through its goal of converting and capturing under- and unused energy sources. These sources include captured biogas waste from landfills, methane gas flared from oil fields, and excess renewable energy.
Capture MARA’s Innovation, Bitcoin Mining Industry With WGMI
MARA seeks to deliver innovative solutions for the energy transformation in its forward-looking approach to digital energy. The company is currently the top holding in the CoinShares Valkyrie Bitcoin Miners ETF (WGMI ) as of June 9, 2025, at 4.27% weight. The actively managed fund offers pure-play exposure to bitcoin miners in North America.
WGMI invests in companies who earn at least half their profits or revenue from bitcoin mining but does not invest in bitcoin. The fund invests in those companies providing hardware, software or services to bitcoin mining companies. Additionally, the strategy seeks companies that manufacture specialized chips used in bitcoin mining.
Bitcoin mining entails running mining computer rigs with specialized programs. These rigs use intense computations to validate transactions on the bitcoin network. As miners validate transactions and solve computations, they create new blocks for the blockchain. In return, they’re rewarded with newly minted bitcoin cryptocurrency as well as transaction fees.
Bitcoin has a finite amount of supply (21 million), with halving events approximately every four years. The most recent occurred in April 2024. Each halving reduces the amount of bitcoin paid for creation of new blocks, cutting supply in half. This means that over time, bitcoin miners will earn less. Instead, they’ll rely more on transaction fees earned for their efforts.
WGMI is managed by a team of industry experts on both cryptocurrencies as well as the finance sector. The strategy utilizes this expertise when seeking bitcoin mining companies and those in related industries. Investors are able to harness the fund manager’s knowledge of the technical, operational, and commercial workings of the bitcoin mining industry when investing in the fund.
WGMI carries an expense ratio of 0.75%.
For more news, information, and strategy, visit the CoinShares Crypto ETF Hub.
