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From Amazon to Apple, October's swoon has erased trillions from America's biggest companies. Here's who's down the most in Greater Washington.

Jeff Jeffrey
American City Business Journals
From Amazon to Apple, October's swoon has erased trillions from America's biggest companies. Here's who's down the most in Greater Washington.

The nation’s largest 3,000 public companies suffered a net loss of $2.1 trillion between Sept. 30 and Oct. 24, according to a Business Journals analysis of Bloomberg data. The likes of Danaher, Lockheed, Marriott and CoStar took hits.