'Familiarity bias' can reveal itself in a number of ways in a portfolio but, writes David Macdonald, it ultimately leads to a lack of diversification that can hurt returns and so must be resisted
In most walks in life, the temptation to stick to what you know is strong. This tendency can save considerable time - it avoids agonising over what brand of ketchup to buy, for example, or getting lost...
'Managed separation update'
The chairman discusses his surprise holiday job
Three months on
Regulator has stepped in