Market Update: Quadruple Expiration Week


This week is quadruple expiration week. Jack explains what that means and  how open interest in the December S&P 500 futures rolling over to the March contract affects the market. He also explains why portfolio managers are getting into calendar spreads.

Debbie Carlson has focused on commodities for much of her writing career. She spent more than a decade at Dow Jones covering the Chicago-based futures exchanges. As a Dow Jones editor, she worked closely with The Wall Street Journal and Barron's in planning commodities coverage.

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