Y TREE's analysis of 550 portfolios found that 84 per cent of wealth managers underperformed in 2025. Wealth management underperformance cost investors up to a third of their expected returns — and most don't even know it's happening.
Overconfidence is one of the most common behavioural traps in investing. Just as most people think they’re better-than-average drivers, many assume they’re skilled investors but the numbers suggest otherwise. CONSTANTINOS ANTONIOU from Warwick Business School says this kind of overconfidence leads to poor decision-making, particularly in investing, where people tend to overreact to news or act on unreliable signals. Trading on rumour, reacting too quickly, or thinking you can