Facing a slowdown in profits, high-frequency trading firms are pushing deeper into new asset classes such as bonds, currencies and derivatives. But as the practice, which disrupted and revolutionised stock trading, spreads so too does the potential consequences of a market error. The FT's Arash Massoudi investigates the reasons for the shift and the broader implications for the market.
Produced, filmed and edited by Gregory Bobillot Library: Getty
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