Shares of Lantronix Inc. (NASDAQ: LTRX) rose 2.2% in premarket trading on Wednesday after the company appeared on a preliminary list of additions to the Russell 3000 Index.
FTSE Russell posted the preliminary list after the U.S. market close on Friday, May 22, 2026. The index reconstitution conducted in June considers the universe of U.S. stocks as of April 30 and ranks up to the 4,000 largest issues by total market capitalization.
Membership in the Russell 3000 Index, which applies for a six-month period beginning in 2026, also triggers automatic inclusion in either the large-cap Russell 1000 Index or the small-cap Russell 2000 Index, in addition to the relevant growth and value style indexes. That structure means companies added to the Russell 3000 will be placed into the subset indexes that match their market-cap and style characteristics.
Lantronix describes its business as providing Edge AI and Industrial Internet of Things solutions that support NDAA-compliant unmanned systems, critical infrastructure and resilient enterprise networks.
FTSE Russell said approximately $10.6 trillion of assets are benchmarked against its U.S. indexes. The Russell U.S. Indexes are commonly used by investment managers and institutional investors both for index funds and as reference benchmarks for active strategies.
The methodology FTSE Russell uses to determine membership in its indexes is driven primarily by objective market-capitalization rankings and style attributes.
Below are the key takeaways and considerations stemming from Lantronix's preliminary inclusion and the broader index mechanics.
- Preliminary listing: Lantronix appears on the initial list of additions issued after the May 22, 2026 market close.
- Reconstitution mechanics: The June reconstitution ranks up to 4,000 U.S. stocks by total market capitalization as of April 30.
- Index cascade: Inclusion in the Russell 3000 leads to placement in either the Russell 1000 or Russell 2000 and associated style indexes for the six-month membership period.
No additional commentary or guidance from the company or FTSE Russell is included in the published material beyond the facts of the preliminary list, membership mechanics and the scale of assets benchmarked to the Russell U.S. indexes.