Eight Sleep Scores $50M Funding at $1.5B Valuation to Revolutionize Sleep Health
New York-based sleep technology firm Eight Sleep announced on March 4, 2026, that it secured $50 million in a strategic funding round led by Tether Investments.
The investment values the company at $1.5 billion and marks its entry into unicorn status among health-focused startups.
 |
| Credit: Eight Sleep |
The round follows a $100 million raise in August 2025 from backers including HSG, Valor Equity Partners, Founders Fund, and Y Combinator. Eight Sleep withheld the valuation from that prior financing.
Back in 2021, the firm closed an $86 million Series C led by Valor Equity Partners at a post-money valuation of $500 million. Total capital raised now exceeds $310 million.
Product Line and Operations
Eight Sleep develops smart mattress covers and systems equipped with sensors to monitor sleep metrics such as heart rate, respiratory rate, and movement.
The technology dynamically adjusts bed temperature on each side to optimize rest based on individual data. The company ships its Pod series products to customers in more than 34 countries worldwide.
Financial Milestones
Eight Sleep achieved free cash flow positivity during 2025. This financial benchmark underscores the firm's operational efficiency amid scaling its consumer base and product offerings.
Strategic Use of Funds
The fresh capital will support development of new hardware and software features. Eight Sleep also plans expansions into additional international markets. Part of the investment targets clinical studies to validate its AI algorithms for predictive health insights derived from sleep data.
“What we’re building doesn’t exist yet — a system that understands your body better each night and acts on that knowledge. Our goal is to build the defining health technology company of this generation,” Matteo Franceschetti, co-founder and CEO of Eight Sleep, said in a statement.
Co-founders Matteo Franceschetti, Massimo Andreasi Bassi, and Alexandra Zatarain lead the firm from its headquarters in New York.
The strategic tie-up with Tether Investments aligns with Eight Sleep's shift toward AI-enhanced preventative health tools beyond traditional sleep tracking.
