Tether Antalpha Stake Hits 8.2% to Back Bitcoin Mining

The new Tether Antalpha stake just bought the USDT issuer a seat at the Bitcoin mining finance table. Tether disclosed an 8.2% position in Antalpha on Monday, scooping up 1.95 million shares of the miner-focused lender through related entities, according to a Schedule 13D filing with the US Securities and Exchange Commission. That makes Tether one of the largest shareholders of a company whose entire business is keeping Bitmain’s customers solvent.

Tether Antalpha Stake Quietly Lands a Top Shareholder Slot

The filing names Giancarlo Devasini, Tether’s chairman, as the person sharing voting and dispositive power over the position. In plain English: if Antalpha’s board ever needs a phone call, Devasini is now on speed dial. The filing also says Tether and its related entities may increase or reduce the holding over time depending on market conditions, which is the standard hedge every 13D filer writes but rarely means nothing.

Tether had previously signaled interest in buying up to $25 million worth of shares. The actual purchase is larger in practice because Antalpha’s stock has bled since its debut. The company raised about $49.3 million in its May 2025 IPO at $12.80 per share, and trading near $9.97 on Monday means Tether is averaging in at a discount to the offering price.

Antalpha is not a household crypto name, but its balance sheet matters. The firm reported a loan portfolio of roughly $1.6 billion at the end of 2024, lending against Bitcoin collateral and financing mining hardware for operators. It is closely tied to the Bitmain ecosystem, the dominant supplier of ASIC rigs, which means Tether just bought exposure to the plumbing that keeps a meaningful slice of global hash rate online.

The participation of Tether reflects direct strategic alignment. USDT has become the dominant settlement layer for cross-border capital flows.

Why Antalpha Matters to the Bitcoin Mining Cycle

Mining is a capital-starved business most of the time, and a capital-flooded business for about six months after every halving. Antalpha plays in the gap between those cycles. It lends against rigs, against Bitcoin holdings, and against future block rewards, giving operators a way to scale without dumping coins at bad prices.

That model paid off in 2025. Antalpha reported full-year revenue of $79.7 million, up 68% year over year, while net income rose to $18.5 million, more than tripling from the previous year. Those are not the numbers of a business in trouble. They are the numbers of a business whose customers are still paying, still mining, and still willing to post collateral in a volatile market.

Shares jumped about 7.2% on Monday to roughly $9.97 in early trading, per Google Finance data. That is a decent one-day pop, but it also tells you how starved the stock had been for a catalyst before Tether’s name hit the tape.

• $1.6 billion mining loan book as of end-2024
• $79.7 million 2025 revenue, up 68% year over year
• $18.5 million 2025 net income, more than 3x the prior year
• Close operating ties to Bitmain, the largest ASIC manufacturer
• IPO price $12.80, currently trading near $9.97

What Does the Schedule 13D Filing Actually Tell Us?

A Schedule 13D is the form anyone crossing a 5% ownership threshold in a US-listed company has to file. The Schedule 13D filing for Antalpha confirms the 1.95 million shares are held through related Tether entities, with Devasini personally sharing voting power. That ties the position directly to Tether’s leadership.

The filing also leaves the door open for more buying. The standard language about possibly increasing or decreasing the stake is boilerplate, but in context it reads like a soft yes. Tether said it was interested in up to $25 million of stock. At current prices, it has room to keep adding without tripping another disclosure threshold for a while.

Tether Is No Longer Just a Stablecoin Issuer

This deal is part of a longer pattern. Tether is the issuer of USDT, the largest stablecoin by market capitalization, with a market cap of about $187 billion, roughly 58.4% of the total stablecoin market, which sits near $320.7 billion, according to DefiLlama data. That business generates so much cash that Tether has turned itself into a crypto-adjacent holding company, and the venture line keeps getting longer.

Earlier on Monday, real-world asset tokenization protocol Kaio said Tether participated in an $8 million funding round. Kaio pitches itself as the layer that turns USDT into institutional yield access, which is exactly the kind of tuck-in investment that expands USDT’s utility without Tether having to build the product itself.

In March, Tether led a $50 million investment in Eight Sleep, the smart mattress company, at a $1.5 billion valuation. That one still confuses people. In February, it bought a $150 million stake in Gold.com, around 12% ownership, to bolt physical gold distribution onto its XAUt tokenized-gold product. The same month, it dropped $100 million into Anchorage Digital, the federally chartered US digital asset bank that offers custody and stablecoin issuance to institutions.

CEO Paolo Ardoino said in July that Tether had invested in more than 120 companies through its venture arm, with funding coming from profits rather than stablecoin reserves. That last part is the one regulators and auditors care about. Whether you buy the accounting or not, the spending pace is real.

What This Means for Bitcoin Miners and USDT Holders

For miners, a well-funded Antalpha is a lifeline. Lending desks that survive bear markets are the ones with patient capital behind them, and Tether is about as patient as capital gets when it is not your shareholders’ money. Expect Antalpha to quote tighter on Bitcoin-backed loans, extend longer tenors, and push deeper into hardware financing as hash rate keeps climbing.

For USDT holders, the read-through is more subtle. Every dollar Tether deploys into a mining lender, a tokenization protocol, or a custody bank is a dollar aimed at making USDT stickier inside the financial stack. The Kaio quote about USDT being the dominant cross-border settlement layer is not marketing fluff, it is the thesis. Tether is buying the rails, not just running on them.

There is also the capital-raise backdrop. Earlier this month, Tether was reported to be seeking fresh capital at a $500 billion valuation, with the company signaling it could delay the raise if demand falls short. Dropping headlines like an 8.2% stake in a mining lender, an Eight Sleep round, a Gold.com deal, and an Anchorage check is exactly what you do when you are building a narrative for that kind of number.

Call it empire-building, call it balance-sheet diversification, call it Ardoino having fun with the checkbook. The direction is unmistakable.

This article is for informational purposes only and does not constitute investment advice. Every investment and trading decision involves risk. Readers should conduct their own research before making any financial decisions.