On the 30th anniversary of the 1987 stock market crash, U.S. stocks are at a record high and investors are concerned that steep valuations may mean a correction is overdue, despite healthy corporate earnings and economic growth. But could a repeat of “Black Monday” happen today? Modern trading technology, changes to the way stock exchanges operate and in the way investor funds are managed should make a repeat of the 1987 crash unlikely. Yet cautious traders refuse to rule it out.

“We have learned a lot from the mistakes of the past in terms of the reaction or overreaction,” said Ken Polcari, director of the NYSE floor division at O’Neil Securities in New York. On Monday Oct. 19, 1987, following large declines on Asian and European markets the previous week, the Dow Jones Industrial (.DJI) Average plunged 508 points, or 22.6 percent, for the biggest-ever single day decline in percentage terms by the blue-chip benchmark. READ MORE