3i Group, the UK’s largest investment trust, saw a 9% increase in share price following a strong performance by its largest holding, Action. Action reported 4.9% sales growth in 2025 and a 16% increase in net sales. 3i reinvested £800 million into Action, now comprising 62.3% of its portfolio.

Despite a volatile 2025, 3i’s shares have outperformed, with Action driving much of the success. Although the share price is still 10% lower than in January 2025, recent gains show a 13% premium against the updated net asset value. In November 2025, shares fell 20% due to softening trading conditions in France.

Read more at Morningstar: 3i Shares Jump as Major Holding Performs Again