FTSE 100 Drops as AstraZeneca Merger Talks Spark Volatility

The FTSE 100 declined 30 points to 10,838 on August 3, 2026, largely due to a 9.3% drop in AstraZeneca shares. The decline followed reports that AstraZeneca PLC is in discussions to merge with Bristol Myers Squibb Company, a move that would create a pharmaceutical entity valued at $400 billion.

Broader market volatility was influenced by geopolitical shifts after Donald Trump announced the United States cancelled planned strikes against Iran to resume diplomatic talks. This decision led to a decrease in Brent crude oil prices.

In the corporate sector, Shell PLC agreed to sell its European onshore renewables business to TotalEnergies SE for an undisclosed amount, and Alibaba Group Holding Limited launched its Qwen 3.8-Max AI model. Other economic activity included a coordinated intervention by the United States Treasury and the Japanese government to support the yen.

In the United Kingdom, housebuilders experienced gains following a drop in gilt yields, though the manufacturing PMI for July decreased to 51.9.