NEW YORK–(BUSINESS WIRE)–Eight Sleep, the leading sleep technology company, today announced a new strategic round led by Tether Investments, valuing the company at $1.5 billion. The investment will fund Eight Sleep’s expansion from sleep optimization into predictive, AI-driven health — building a system that anticipates disruptions to recovery and intervenes before they occur. The round follows a milestone year. In 2025, Eight Sleep achieved free cash flow positivity while launching three new
