The stock market tumbled by the largest amount in a president's first 100 days in office since Richard Nixon's second term began in 1973 under Donald Trump, new research shows.

The Dow industrials turned in their worst performance in the first 100 days of an administration since President Nixon's second term. (UPI Color/Bettmann Archive/Getty Images) Tuesday marks the ...

President Donald Trump 's first 100 days in office are the worst for the stock market for the start of a president's four-year term since the 1970s.