--- title: "REG - FTSE Russell Ashtead Group PLC Tritax Big Box REIT Costain Group PLC - Ashtead Group" type: "News" locale: "en" url: "https://longbridge.com/en/news/276923175.md" description: "FTSE Russell announced changes to the FTSE UK Index Series effective from 02 March 2026. Ashtead Group will be deleted from the FTSE 100 index following a transfer of listing category. Tritax Big Box REIT will be added to the FTSE 100 index and removed from the FTSE 250 index. Costain Group PLC will join the FTSE 250 index and be deleted from the FTSE SmallCap index. Further details can be found on the FTSE Russell website." datetime: "2026-02-25T18:00:00.000Z" locales: - [zh-CN](https://longbridge.com/zh-CN/news/276923175.md) - [en](https://longbridge.com/en/news/276923175.md) - [zh-HK](https://longbridge.com/zh-HK/news/276923175.md) --- # REG - FTSE Russell Ashtead Group PLC Tritax Big Box REIT Costain Group PLC - Ashtead Group RNS Number : 4290U FTSE Russell 25 February 2026 Further to the FTSE notice released on 23 February 2026 in relation to Ashtead Group (UK): Transfer of Listing Category, please note the index replacement and associated changes. All other details remain unchanged. Please see updated notice below: Ashtead Group (UK): Transfer of Listing Category - Update Changes in FTSE UK Index Series 25 February 2026 Further to the FTSE Russell notice released on 28 January 2026 and following the court sanctioning the scheme of arrangement in relation to a change in holding company and transfer of listing category for Ashtead Group (UK, constituent), please see details of affected indexes and effective dates below: Ashtead Group (UK, 0053673) will be deleted from the FTSE 100 index. Tritax Big Box REIT (UK, BG49KP9) will be added to the FTSE 100 Index and deleted from the FTSE 250 Index. Costain Group PLC (UK, B64NSP7) will be added to the FTSE 250 Index and deleted from the FTSE SmallCap Index. All changes effective from 02 March 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: Australia +61 (0) 2 7228 5659 Hong Kong +852 2164 3333 Japan +81 3 6441 1430 London +44 (0) 20 7866 1810 New York +1877 503 6437 Alternatively, please visit our website at lseg.com/ftse-russell Terms of Use | Copyright © 2026 FTSE Russell This information is provided by RNS, the news service of the London Stock Exchange. RNS is approved by the Financial Conduct Authority to act as a Primary Information Provider in the United Kingdom. Terms and conditions relating to the use and distribution of this information may apply. For further information, please contact rns@lseg.com or visit www.rns.com. RNS may use your IP address to confirm compliance with the terms and conditions, to analyse how you engage with the information contained in this communication, and to share such analysis on an anonymised basis with others as part of our commercial services. For further information about how RNS and the London Stock Exchange use the personal data you provide us, please see our Privacy Policy. END FTSDELFLQLLLBBL ### Related Stocks - [ASHTY.US](https://longbridge.com/en/quote/ASHTY.US.md) - [BBOX.UK](https://longbridge.com/en/quote/BBOX.UK.md) - [L100.UK](https://longbridge.com/en/quote/L100.UK.md) - [ASHGY.US](https://longbridge.com/en/quote/ASHGY.US.md) - [HMCX.UK](https://longbridge.com/en/quote/HMCX.UK.md) - [COST.UK](https://longbridge.com/en/quote/COST.UK.md) - [ISF.UK](https://longbridge.com/en/quote/ISF.UK.md) - [AHT.UK](https://longbridge.com/en/quote/AHT.UK.md) - [MIDD.UK](https://longbridge.com/en/quote/MIDD.UK.md) - [ISFD.UK](https://longbridge.com/en/quote/ISFD.UK.md) - [HUKX.UK](https://longbridge.com/en/quote/HUKX.UK.md) - [VUKE.UK](https://longbridge.com/en/quote/VUKE.UK.md) ## Related News & Research - [Tritax flags rising Chinese demand for UK logistics space as firms lease 3 million sq ft in 2025](https://longbridge.com/en/news/293222379.md) - [Tritax Big Box Developments completes 580,700-sq-ft logistics phase at Symmetry Park Biggleswade](https://longbridge.com/en/news/292636305.md) - [DPD signs lease deal for 63,000-sq-ft hub at Tritax Park Queens’ Cambridge](https://longbridge.com/en/news/291944953.md) - [REG - Costain Group PLC - Director/PDMR Shareholding](https://longbridge.com/en/news/290806130.md) - [Sunbelt Rentals Prices $1.2 Billion in Senior Notes to Bolster Growth and Refinancing](https://longbridge.com/en/news/291981477.md)