Tether Investments, the independent investment arm of the popular cryptocurrency firm Tether, announced on March 4 that it has a strategic investment at a $1.5B valuation in Eight Sleep.
Tether is well-known for its stablecoins, USDT and USAT.
Related: Gold giant nears $375B valuation with shocking 99% profit margin
A stablecoin is a type of cryptocurrency that, unlike traditionally volatile cryptocurrencies like Bitcoin (BTC) and Ethereum (ETH), keeps its value stable by being pegged to a "stable" asset like a fiat currency, such as the U.S. dollar.
The value of one USDT or USAT is the same as that of one dollar. Each such stablecoin is pegged 1:1 to the USD and is backed by dollar reserves like short-term U.S. Treasury Bills and repurchase agreements.
These financial instruments are debt securities issued by the U.S. Department of the Treasury to finance government operations.
As per Tether's attestation for the fourth quarter of 2025, the stablecoin giant's direct and indirect exposure to U.S. Treasury surpassed $141 billion.
In fact, Tether is among the largest holders of U.S. government debt globally.
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Tether invests in Eight Sleep
Tether Investments has made a strategic investment in Eight Sleep at a valuation of $1.5 billion.
Launched in 2014, the sleep fitness company claims to apply advanced artificial intelligence (AI) technology and embedded sensors to deliver personalized sleep insights and enhancements.
Tether said its investment in the company aims to build advanced AI-driven health technology using Tether’s QVAC Health architecture, among others, to enhance Eight Sleep products.
Tether CEO Paolo Ardoino said,
“Eight Sleep has the potential to define the future of health tech by building intelligence that learns, scales, and evolves directly with humankind, turning advanced AI into practical, everyday insights and enhancements about core human biology."
Eight Sleep co-founder and CEO Matteo Franceschetti said the company had built what he described as the world’s most seamless AI-powered health-sensing system, adding that the partnership with Tether would provide the infrastructure needed to extend that intelligence beyond the Pod and into broader aspects of personal health.
"People should take notice. Together, we are building the biggest health technology company in the world.”
Launched in December 2025, Tether's QVAC Health is a personal wellness platform that helps users aggregate biometric data, workout logs, nutritional tracking, and medication reminders over a single, encrypted, offline-capable dashboard.
Related: S&P downgrades Tether to lowest rating
This story was originally published by TheStreet on Mar 4, 2026, where it first appeared in the MARKETS section. Add TheStreet as a Preferred Source by clicking here.
