4 March 2026 – Tether Investments today announced a strategic investment at a $1.5B valuation in Eight Sleep, the world’s renowned sleep technology company that applies advanced artificial intelligence and embedded sensors to deliver personalized sleep insights and enhancements. Tether firmly believes in the growing importance of health tech as a foundation for longevity, performance, and disease prevention, and as a critical tool for helping people better understand their own biology. Technologies that can turn continuous health data into clear, practical insights will shape the future of consumer health and wellness.
The investment is designed to empower Eight Sleep and establish a long-term collaboration to build advanced AI-driven health technology using, among others, Tether’s QVAC architecture and leveraging QVAC’s edge intelligence to enhance Eight Sleep products.
Eight Sleep develops AI-powered sleep systems that continuously adapt to individual physiology through embedded sensing and real-time intelligence. Through its collaboration with Tether, Eight Sleep plans to expand capabilities by building AI features on QVAC. Together, the companies aim to deliver health intelligence that is adaptive, resilient, and secure by design, while preserving long-term flexibility as AI capabilities evolve.
“We believe advanced personalized AI is the perfect pathway to understand and expand human potential,” said Paolo Ardoino, CEO of Tether. “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. By helping people better understand sleep, recovery, and long-term health, Eight Sleep is laying the groundwork for a new standard in longevity-focused technology that is truly personalized, can function in any condition, is directly on-device, is resilient, and aligns with how people live. The age of human-first health intelligence has started.”
“Sleep was just the beginning,” said Matteo Franceschetti, Co-founder and CEO of Eight Sleep. “We’ve built the most seamless AI-powered health sensing system in the world, and this partnership with Tether gives us the infrastructure to take that intelligence beyond the Pod, into every aspect of personal health. People should take notice. Together, we are building the biggest health technology company in the world.”
The investment follows Tether’s recent launch of QVAC Health, a personal wellness platform designed to unify fragmented fitness and health data while preserving individual control. QVAC Health brings data from wearables, manual logs, and other wellness inputs into a single, encrypted, offline-capable environment, allowing users to view and interact with their health information without relying on proprietary cloud platforms or surrendering data to third parties.
QVAC Health’s long-term vision is to make local, user-controlled intelligence the foundation for personal data. The platform is designed to let individuals process their data directly on their own devices, running AI models locally on-device, delivering the highest levels of personalization.
About Tether Investments
Tether Investments is the independent investment arm of Tether, the largest company in the digital assets industry. Based in El Salvador, the company deploys capital from Tether’s profits and excess reserves across a wide range of sectors where technology, infrastructure, and real-world utility intersect.
Its portfolio includes investments in artificial intelligence, financial services, energy, biotechnology, education, and digital media, as well as strategic stakes in industries such as commodities, remittances, and sports and entertainment. Tether Investments supports ventures with long-term potential to improve access, efficiency, and resilience in both emerging and developed markets. Its work supports Tether Group’s broader mission to strengthen decentralized systems, promote infrastructure resilience, and expand real-world access to open, transparent technologies.
