FTSE 100 Climbs: Diageo Appoints New CEO, IAG Rises

London’s FTSE 100 has climbed around 0.5% so far on Monday, buoyed by renewed risk appetite as investors welcomed signs that the U.S. government shutdown could soon end.

The index is up roughly 0.2% over the past week, underscoring its resilience over a volatile period. It has gained more than 19% so far this year.

Diageo was the standout performer, surging more than 6% after the drinks giant announced the appointment of Sir Dave Lewis as its new chief executive officer, effective Jan. 1, 2026.

Lewis, the former Tesco boss, will succeed the outgoing CEO, Debra Crew.

The news also impacted Haleon, which slipped around 1% after naming Vindi Banga as its new chair, also effective Jan. 1, 2026. Banga’s appointment follows Lewis’s decision to step down from Haleon’s board at the end of the year to take up the Diageo role.

Investors also drove shares in International Consolidated Airlines Group up more than 4%, as the British Airways owner rebounded from an 11% drop on Friday following its quarterly results. Fresnillo added about 4%, with other miners also making gains.

On the downside, National Grid fell 1.8%, Sainsbury declined 1.9%, and BT slipped 1.7%, weighing slightly on the broader index.

The FTSE’s advance reflects improving global sentiment after a volatile week, with traders looking for confirmation that Washington will resolve the fiscal impasse and prevent further disruption to financial markets.