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London's FTSE 100 weighed by GSK shares after Nuvalent takeover

Published by Global Banking & Finance Review

Posted on June 9, 2026

2 min read

· Last updated: June 9, 2026

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FTSE 100 Falls as GSK Shares Drop Following $10.6B Nuvalent Buyout Plan

Market Overview and Key Movers

June 9 (Reuters) - UK's blue-chip FTSE 100 slipped on Tuesday, weighed by shares of GSK after the healthcare company announced plans to acquire shares of U.S.-based drug developer Nuvalent for $10.6 billion as it seeks to boost its lung cancer treatments.

The blue-chip FTSE 100 index slipped 0.3% to 10,341 points by 0810 GMT, while the midcap FTSE 250 edged up 0.2%.

GSK's Nuvalent Acquisition and Sector Impact

• Shares of GSK lost 2.8% and weighed on the broader FTSE 350 Pharmaceuticals and Biotechnology index that fell 1.6% and was the biggest sectoral decliner.

Global Market Sentiment

• Global markets were also eyeing signs of de-escalation in the Middle East after Iran and Israel said they had halted attacks on each other following an appeal from U.S. President Donald Trump, who also said that he could have "an idea" for an Iran deal within a few days.

Inflation and Interest Rate Outlook

• Inflation concerns, stemming from higher energy costs due to the conflict, have had investors price in a 25 basis point interest rate hike by the Bank of England in September, according to LSEG-compiled data.

Performance of FTSE Indexes and AI Initiatives

Comparative Performance

• The main FTSE indexes have underperformed their peers in Asia and the U.S., given their minimal exposure to AI stocks. Against this backdrop, Britain set out a new £1.1 billion ($1.47 billion) plan to build domestic AI computing capacity.

Other Notable Stock Movements

BP and Leadership Changes

• Among other stocks, BP slipped 1%, tracking a slip in crude prices. Attention on the company has piqued after the firing of former chair Albert Manifold and a latest report said investors and former executives at the oil major were in the dark about the precise circumstances that led to his departure.

Gainers in the Market

Molten Ventures and Fever-Tree Drinks

• Venture Capital firm Molten Ventures gained 9.5% after announcing annual results, Fever-Tree Drinks gained 6.4% after the carbonated mixer supplier said it is confident of meeting full-year market expectations for revenue and core profit and announced an increase in share buybacks.

Decliners in the Market

MJ Gleeson

• Homebuilder MJ Gleeson lost 3.5% after projecting annual adjusted pretax profit below market expectations.

(Reporting by Johann M Cherian in Bengaluru)

Key Takeaways

  • GSK’s $10.6 billion takeover of Nuvalent involves a $124 per share cash offer, representing a ~40 % premium, with net investment estimated at $9.4 billion; the deal is expected to boost revenue from 2027 and EPS from 2029 (us.gsk.com).
  • The announcement weighed on the FTSE 100 (down 0.3 %) and particularly the Pharmaceuticals & Biotechnology sector (−1.6 %), as GSK shares dropped 2.8 % (investing.com).
  • Beyond the deal, markets are watching geopolitical easing in the Middle East, rate‑hike expectations due to inflation risks, and the UK’s £1.1 billion AI capacity plan—all affecting investor sentiment (investing.com).

References

Frequently Asked Questions

Why did the FTSE 100 fall on June 9?
The FTSE 100 dropped 0.3% mainly due to a decline in GSK shares after the company announced its $10.6 billion acquisition plan for Nuvalent.
How did GSK's acquisition of Nuvalent affect the pharmaceutical sector?
GSK shares fell 2.8%, pushing the broader FTSE 350 Pharmaceuticals and Biotechnology index down 1.6%, making it the biggest sectoral decliner.
What other stocks moved significantly on the day?
Molten Ventures gained 9.5%, Fever-Tree Drinks rose 6.4%, while BP slipped 1% and MJ Gleeson lost 3.5%.
What global factors influenced UK markets?
De-escalation in the Middle East and inflation worries linked to energy costs influenced market sentiment, with expectations of a Bank of England rate hike.
How is the UK's exposure to AI stocks affecting its market performance?
The FTSE indexes have underperformed compared to Asia and the U.S. due to the UK's limited exposure to AI stocks.

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