Kweku Adoboli, a trader in UBS's exchange traded funds business, has been arrested over a $2bn loss due to unauthorised trading. Sonia Falconieri of Cass Business School tells the FT's Daniel Garrahan that the news could help speed up the reforms proposed by Sir John Vickers' Independent Commission on Banking and sound alarm bells about the ETF sector.
Produced by Daniel Garrahan. Filmed by Steve Ager
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