Tether, the firm behind USDT, bought 8,889 BTC worth $1bn, moving the funds to its reserve wallet. Onchain Lens analysts flagged the transfer, citing data from Nansen.
Just In: Tether (@Tether_to) has bought 8,888.889 $BTC worth $1B, on the last day of Q3 2025.
Address: bc1qjasf9z3h7w3jspkhtgatgpyvvzgpa2wwd2lr0eh5tx44reyn2k7sfc27a4
Data @nansen_ai pic.twitter.com/5GwX50ZXou
— Onchain Lens (@OnchainLens) September 30, 2025
Arkham Intelligence also marks the address identified by the analysts as part of the firm’s bitcoin reserves. The funds came from a Bitfinex hot wallet—the exchange is part of the same parent group as Tether.
The move aligns with the issuer’s strategy of adding to its bitcoin holdings each quarter. Since May 2023 the company allocates 15% of net profit to purchases of the “digital gold” as part of a long-term asset diversification plan.
Tether CEO Paolo Ardoino confirmed the latest bitcoin purchase. Including this buy, the firm’s reserves have reached 109,410 BTC ($12.4bn).
Yeah https://t.co/YhSFseaHud pic.twitter.com/xvx93WoXSv
— Paolo Ardoino 🤖 (@paoloardoino) September 30, 2025
The issuer is now the second-largest holder of bitcoin among private companies—and third when public firms are included.
“The most profitable company in history”
In 2024 Tether posted net profit of $13bn. In the second quarter the company earned $4.9bn and became one of the largest holders of US Treasuries at $127bn.
Media reported that the company plans to raise $20bn, which could lift its valuation to $500bn. Later it emerged that preliminary talks for the issuer’s large funding round involve Japan’s SoftBank and Ark Investment, run by Cathie Wood.
Bitwise’s chief investment officer Matt Hougan said Tether could surpass Saudi Aramco by value and become the most profitable company in history.
USDT remains the most capitalised stablecoin on the market with a 58.4% share. The coin’s market value is valued at $174.8bn.
A diversified Tether
In recent years the issuer has also actively diversified its activities. Tether is involved in artificial intelligence, telecommunications, bitcoin mining and more.
The company is currently focused on expanding in the American market. On September 13 it unveiled the “stablecoin” USAT, aimed at users in the United States.
During a panel at the Token2049 conference in Singapore, Ardoino said Tether will use video platform Rumble to promote the new stablecoin, The Block reported. The company invested $775m in the platform in December last year.
“Our goal is to demonstrate how we can convert 51m monthly active users of Rumble, predominantly from the United States, into stablecoin users within the country with the most developed financial infrastructure,” the issuer’s CEO explained.
A new product
Earlier, Ardoino also showcased a demo of a non-custodial wallet built with Tether WDK.
Here is a demo of the (Wallet Development Kit) WDK Template Wallet.
— build 100% on WDK by Tether
— well encapsulated reusable UI components
— soon opensource
— fully non-custodial (supports different seed backup strategies to enable super simple user-experience)
— available for… pic.twitter.com/8sc02ezYNy— Paolo Ardoino 🤖 (@paoloardoino) September 29, 2025
Key features include open-source code, support for all device types, and integration of USDT, USDT0 and DeFi.
“This wallet is a ready-made solution for developers, combining the functionality of non-custodial asset storage with a full set of DeFi tools and cross-platform compatibility,” the head of Tether said.
In February, Ardoino announced the development of several AI-based applications.