Fast-Money Quants Are Buying Stocks as Human Traders Stay Put

  • So-called Commodity Trading Advisors increase stock purchases
  • Discretionary investors, by contrast, are sitting on sidelines

A trader works on the floor of the New York Stock Exchange.

Photographer: Michael Nagle/Bloomberg
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While stock-picking investors wait around trying to decide their next market move, their computer-driven counterparts have no such luxury.

The quants’ taskmasters — trend lines on charts and volatility targets — are forcing them into a concerted buying spree, just as the bond market creates fresh headaches for traditional money managers.