Leinweber's "Learning" Software Helps First Quadrant Top The S&P 500

TECHNOLOGY STRATEGIES

First Quadrant Corp., a investment management firm which uses quantitative strategies to exploit fleeting differences in securities prices using home-grown expert systems, topped the S&P 500 by 9.2 per cent last year in its market-neutral portfolios, which take long and short positions to reduce market risk.

The firm's performance may be due in part to finance mathematician David Leinweber, who joined Frist Quadrant in 1993 after selling his company, Integrated Analytics, and his rule-based a

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