By Jill Treanor
The American lawyer who orchestrated a successful class action suit against the tobacco industry 20 years ago has turned his sights on the stock exchanges caught up in the controversy over high-frequency trading.
HFT is the process by which professional traders are able to put orders in to the stock market more quickly than the majority of investors. Putting in these earlier bets on the market, it is alleged, allows professionals to make quick profits at the expense of savers and investors in pension funds.
