Swedish private‑equity firm EQT lodged an unsolicited bid for U.K. testing specialist Intertek Group on Thursday, offering cash at £51.50 per share. The proposal priced the business at £7.93 billion, roughly an 18 % premium to the stock’s closing level the day before. Intertek’s board promptly rejected the approach.

Shares rallied after the approach became public, climbing to £49 in European afternoon trading, a 12 % rise from the previous close. The jump reflected investor optimism that a higher offer might emerge, but also underscored market skepticism about the valuation gap between EQT’s bid and Intertek’s perceived intrinsic worth.

Intertek, a global provider of testing, inspection and certification services, has long been a steady performer on the London Stock Exchange. Management argues that the £7.93 billion figure undervalues its diversified client base and ongoing contracts, which generate recurring revenue streams less vulnerable to economic cycles than many peers.

By rejecting EQT’s overture, Intertek signals confidence in its strategic roadmap and may invite alternative suitors willing to meet a higher price. Investors will now watch the share price for clues on whether the board’s stance will translate into a premium‑driven rally or a pull‑back as the market digests the stalemate.