Changes in FTSE UK Index Series

Summary by AI BETAClose X

FTSE Russell has announced changes to the FTSE UK Index Series, effective October 8, 2026, subject to court sanctioning the scheme of arrangement for the cash acquisition of Senior by Zeus UK Bidco. Senior will be deleted from the FTSE 250 index, and Amaroq will be added to the FTSE 250 index while being deleted from the FTSE SmallCap Index. All other index details remain unchanged.

Disclaimer*

FTSE Russell
05 October 2026
 

 


 


 

Further to the FTSE notice released on 01 October 2026 in relation to in relation to Senior (UK): Constituent Deletion, please note the index replacement and associated changes.

 

All other details remain unchanged. Please see updated notice below: 

Senior (UK): Constituent Deletion - Update
Changes in FTSE UK Index Series

05 October 2026

Subject to the court sanctioning the scheme of arrangement in relation to the cash acquisition of Senior (UK, constituent) by Zeus UK Bidco (non-constituent), please see details of affected indexes and effective dates below:

 

Senior (UK, 0795823) will be deleted from the FTSE 250 index.

 

Amaroq (UK, BTRG036) will be added to the FTSE 250 Index and deleted from the FTSE SmallCap Index.

 

All changes effective from 08 October 2026.

 

Full details of index changes are available on the FTSE Russell website.

 

 

 

 

 

For further information please contact FTSE Russell Client Services at info@ftserussell.com or call:


Asia Pacific ex Japan


+852 2164 3333

Japan

+81 3 6441 1430

Europe, Middle East & Africa

+44 (0) 20 7866 1810

North America

+1 800 721 2225
 

Alternatively please visit our website at lseg.com/ftse-russell


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Senior (SNR)
Amaroq Ltd. (AMRQ)
UK 100
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