Hyperfine Inc. (NASDAQ:HYPR) shares climbed 4% in premarket trading on Tuesday after the company was named on a preliminary FTSE Russell list as an expected addition to the Russell 3000 Index and the small-cap Russell 2000 Index.
FTSE Russell posted the preliminary list on May 22, 2026, and the company said the membership will become effective after the close of U.S. markets on June 26, 2026, at the conclusion of the June 2026 Russell Reconstitution.
The June reconstitution evaluates the largest U.S. stocks by total market capitalization as of April 30, capturing up to 4,000 companies and assigning them to either the Russell 1000 or the Russell 2000 through the broader Russell 3000 framework. Companies included in the Russell 3000 are automatically placed into the appropriate large-cap Russell 1000 or small-cap Russell 2000 list.
Russell indexes are frequently used as benchmarks by investment managers and institutional investors and are the basis for many index funds and active strategy comparisons. The article notes that, as of the end of June 2025, approximately $12.2 trillion in assets were benchmarked to the Russell US indexes.
Company product and executive comment
Hyperfine is the developer of the Swoop portable MRI system, described as the first FDA-cleared AI-powered portable MRI system for brain imaging. The company markets the device as a tool to provide imaging at multiple points of professional care.
Maria Sainz, Hyperfine's President and Chief Executive Officer, said the expected inclusion in the Russell indexes demonstrates continued progress in executing the company’s commercial strategy and expanding awareness of its portable MRI technology.
Market context and timing
The inclusion follows FTSE Russell’s routine reconstitution process, which considers market capitalization rankings as of April 30 and finalizes changes at the close of trading on the designated effective date. For Hyperfine, the effective date is after the U.S. market close on June 26, 2026.
Investors and market participants tracking small-cap benchmarks and exchange-traded products that track the Russell family of indexes may monitor flows and allocations around the effective date, given the scale of assets that reference these benchmarks.
Summary takeaway
Hyperfine’s expected admission to the Russell 3000 and Russell 2000 follows FTSE Russell’s preliminary list publication and becomes effective after the market close on June 26, 2026. The move coincides with investor attention on the company’s Swoop portable MRI and executive statements tying the inclusion to commercial progress.