FTSE Russell, the global index provider, announces the alignment of the minimum free float requirement for both UK incorporated and non-UK incorporated companies within the FTSE UK Index Series.
Taking effect from the June 2026 index review, both UK and non-UK incorporated companies with a minimum free float of 10% will be eligible for inclusion to the FTSE UK Index Series, subject to satisfying all other inclusion criteria. The current minimum free float requirement for non-UK incorporated companies is 25%.
The rule change removes the distinction between UK and non-UK incorporated companies in relation to the minimum free float requirement. It is intended to make the indices more representative of the real economic exposure they are designed to measure, with the requirement aligning with the London Stock Exchange Main Market minimum free float requirement for all companies.
David Sol, Global Head of Policy at FTSE Russell, comments:
“We regularly review our index methodologies to ensure they continue to reflect the markets they are designed to track. Following a recent market consultation, we are aligning the minimum free float requirement for UK and non-UK incorporated companies. While we do not expect any immediate impact on index constituents, this change aims to strengthen how accurately the indices reflect the UK market.”
This follows the March 2025 announcement of changes to the Sterling Denominated Price Requirement and Fast Entry Thresholds in the FTSE UK Index Series, which came into effect at the September 2025 index review.
For more information, see the full technical notice.
Source: FTSE Russell
