October has been a rollercoaster ride for America's largest companies, with even the healthiest corporate titans racking up tens-of-billions in lost market value since the month began.
A Business Journals analysis of the nation’s largest 3,000 public companies determined roughly $2.1 trillion in market capitalization was lost between Oct. 1 and Oct. 24, as uncertainties concerning trade, interest rates and economic instability abroad sent U.S. stock markets swooning.