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MARA runs giant computer farms that earn bitcoin by solving math puzzles, and increasingly sells energy and computing services too.
MARA Holdings is a bitcoin mining company, which means it runs warehouse-sized buildings full of specialized computers that compete to solve math puzzles. Whoever solves a puzzle first gets to add a new block to the bitcoin blockchain and is rewarded with newly created bitcoin. That reward is the main way MARA makes money. It also earns small transaction fees from people moving bitcoin around. So the customer, in a sense, is the bitcoin network itself, and the paycheck arrives in bitcoin. On top of that, the company is starting to sell something else: the energy and space its data centers sit on. It has been turning some of its sites into hosts for outside computing jobs, including artificial intelligence work, which pays in plain old dollars.
The business runs on an equation that is easy to grasp: electricity in, bitcoin out. MARA buys cheap power, points its machines at the puzzle, and hopes the bitcoin it earns is worth more than the power bill. Think of it as a factory where the raw material is electricity and the finished product is digital money. The company also holds a large pile of bitcoin on its balance sheet rather than selling everything it mines, which means its fortunes swing hard with the price of bitcoin. It has made big moves to grow, including buying rival mining sites and equipment, and it now operates some of the largest mining capacity in the world. Its costs are mostly power, hardware, and the constant need to replace machines as the network gets more competitive.
The story has changed shape over time. It started as a shell company and pivoted into crypto mining, later rebranding from Marathon Patent Group to MARA Holdings to signal it is more than just a miner. More recently it has leaned into energy and AI hosting, betting that the same cheap power and land it uses for bitcoin can be rented out for other heavy computing. For a curious reader, the key question is simple: as bitcoin mining rewards shrink every few years, can MARA keep turning cheap electricity into more value than it spends? The company mostly spends its cash on new machines, new sites, and sometimes buying more bitcoin, rather than paying dividends.
Saved answer · last researched 11 Oct 2026