Stock Quant Tremor Is a Field Day for Geeks

  • Beneath a tranquil surface, historic moves in momentum, value
  • Factors are a lens into the unusual profile of the 2019 rally
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For a stock market that has sat almost completely still for days, this one is proving an irresistible laboratory for a brand of geeky equity analysis that has been gaining influence over the past decade.

You wouldn’t know it from benchmarks, but beneath a tranquil surface violent swings are lashing traders along obscure fault lines. Companies like real-estate firms that rose the most in 2019 are plunging, and some that have trailed are being pushed out front. It’s been a mild reckoning for hedge funds and others who have bet on the status quo persisting.