Paolo Ardoino, Tether CEO
Tether is the company behind the biggest stablecoin, USD₮ (also known as USDT). A stablecoin is a crypto token that tries to stay equal to $1. In 2025, Tether mattered because USDT helped power crypto trading and dollar transfers, even while users and institutions keep going after the company over trust.
USDT first released in July 2014 as Realcoin, then rebranded to Tether later that year. In February 2021, Tether and Bitfinex settled a New York Attorney General probe for $18.5 million and agreed to stop serving New Yorkers.
In October 2021, the CFTC fined Tether $41 million over past statements about reserves.
Tether’s scale made USDT hard to ignore. Its Q2 2025 reserve report said it had $157.1 billion USDT issued and about $127 billion in US Treasury exposure.
Tether’s next test is running a two-pronged plan: USDT for the world, and USA₮ for the stricter US market. That said, its biggest risk is still trust. Clear reserve reports and an actual audit will matter more as stablecoins become everyday payment tools.