What is beta?

How risky is the share you are about to buy? Fans claim stock 'betas' give you an instant snapshot. Tim Bennett explains how they work and whether they can be trusted.

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How risky is the share you are about to buy? Fans claim stock 'betas' give you an instant snapshot. Tim Bennett explains how they work and whether they can be trusted.

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Tim Bennett

Tim graduated with a history degree from Cambridge University in 1989 and, after a year of travelling, joined the financial services firm Ernst and Young in 1990, qualifying as a chartered accountant in 1994.

He then moved into financial markets training, designing and running a variety of courses at graduate level and beyond for a range of organisations including the Securities and Investment Institute and UBS. He joined MoneyWeek in 2007.