S4 Capital's Revenue Fell 10% in Q3 2023 After Soaring 29% a Year Prior

Martin Sorrell's digital advertising group swung from explosive growth to contraction. Q3 2022 saw like-for-like revenue surge 29% year-on-year; Q3 2023 reversed sharply with a 10% decline. The volatility signals either client spending weakness or execution challenges—both matter for a maturing company now guiding toward flat performance in 2026.