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(Alliance News) - The following are the leading risers and fallers among FTSE 100 and 250 index constituents on Tuesday.

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FTSE 100 winners

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Fresnillo PLC, up 4.1% at 3,374.50p, tracks higher gold prices

Entain PLC, up 4.0% at 585.20p, bid for MGM Resorts fuels speculation over buyout of joint-venture stake

Kingfisher PLC, up 3.4% at 285.55p

ICG PLC, up 3.3% at 1,896.00p

Antofagasta PLC, up 3.8% at 4,296.50p

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FTSE 100 losers

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British American Tobacco PLC, down 4.5% at 4,377.00p, expects lower global cigarette industry volumes

Airtel Africa PLC, down 2.8% at 343.20p

Imperial Brands PLC, down 2.1% at 2,633.00p

BP PLC, down 1.9% at 526.00p

Babcock International Group PLC, down 1.7% at 1,028.00p

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FTSE 250 winners

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Baltic Classifieds Group PLC, up 9.2% at 198.65p

Raspberry Pi Holdings PLC, up 7.8% at 876.00p

Aston Martin Lagonda Global Holdings PLC, up 5.3% at 47.63p

WH Smith PLC, up 5.0% at 520.25p

Elementis PLC, up 4.9% at 159.30p, plans EUR30 million share buyback as completes pharma sale

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FTSE 250 losers

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GB Group PLC, down 11% at 218.50p, takes near-term margin hit as one-off costs lead to hefty loss

Chemring Group PLC, down 6.0% at 479.80p, profit hit by impairment

Ceres Power Holdings PLC, down 4.3% at 779.25p

NB Private Equity Partners Ltd, down 2.1% at 1,433.00p

Hollywood Bowl Group PLC, down 2.0% at 292.50p

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FTSE 100 & 250 movers in focus:

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Entain PLC, up 4.0% at 585.20 pence, 12-month range 500.40p-1,031.50p. Gains amid speculation over the future ownership of BetMGM after billionaire Barry Diller's People Inc makes an USD18 billion bid for MGM Resorts International. The proposal has fuelled market talk that MGM could eventually seek to buy out Entain's stake in the US sports betting and gaming joint venture.

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British American Tobacco PLC, down 4.5% at 4,377.00 pence, 12-month range 3,308.00p-5,326.00p. Falls after warning that global cigarette industry volumes are now expected to decline by 2.5% in 2026, worse than its previous forecast for a 2.0% decline. The tobacco company nevertheless says it remains firmly on track to meet full-year guidance, expecting revenue growth of 3% to 5% and adjusted operating profit growth of 4% to 6%. BAT also upgrades its New Categories outlook, now forecasting mid-teens revenue growth this year, compared with previous guidance for low double-digit growth. It adds there has been no significant impact from the conflict in the Middle East, though it continues to monitor the situation closely.

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GB Group PLC, down 11% at 218.50 pence, 12-month range 185.05p-285.00p. Falls after warning that a planned GBP6 million investment programme will weigh on margins in financial 2027. The identity verification and fraud prevention company says adjusted operating margins are expected to fall to between 21% and 22% next year from 23.7% in financial 2026 before recovering thereafter. GB Group swings to a pretax loss of GBP74.5 million in financial 2026 from a GBP15.7 million profit in financial 2025, reflecting a GBP73.1 million impairment charge linked to its Americas business and a GBP16.5 million write-off relating to its Compliance platform. Revenue rises 3.2% to GBP285.0 million, and the company expects mid-single-digit percentage revenue growth in financial 2027.

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Chemring Group PLC, down 6.0% at 479.80 pence, 12-month range 446.52p-614.00p. The provider of technology products and services to the aerospace, defence and security markets says pretax profit fell 27% to GBP18.8 million in the six months to April 30 from GBP25.9 million a year earlier, reflecting a GBP6.7 million impairment charge related to the closure of Countermeasure operations in Tennessee and weaker performance in its Sensors & Information division. Revenue rises 6.5% to GBP237.3 million, and the order book reaches a record GBP1.40 billion, up 8% year-on-year. Chemring says 91% of the expected 2026 revenue was either delivered or secured in the order book by the end of April.

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Elementis PLC, up 4.9% at 159.30 pence, 12-month range 136.00p-179.60p. Completes the sale of its pharmaceutical manufacturing business to Associated British Foods PLC for an enterprise value of EUR34.3 million and announces plans for a EUR30 million share buyback. The speciality chemicals company expects net cash proceeds of around EUR30 million and says the disposal sharpens its focus on its core personal care and coatings markets, while improving margins and reducing future capital intensity. Elementis adds that its balance sheet remains robust, and its outlook for 2026 is unchanged.

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By Eva Castanedo, Alliance News reporter

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