WhyItDropped

S&P 500 · October 28, 1999

The week the autumn slide ended

+3.53%

single-day change vs previous close

What happened that day?

  • On 28 October 1999 the S&P 500 rose 3.53%
  • The two things that had pressed on the index all autumn — rate fears and inflation readings — eased together around here
  • Company results kept coming in well, because the economy really was strong
  • The run that started here carried into year end, and the index again closed the year at a record
  • No single trigger can be pinned to this day
  • The autumn slide had been 12.08% from the peak
  • It was also the last of five straight years of double-digit gains for the S&P 500

Sources

Every figure on this page is recomputed from the original daily closing prices and checked against them at build time. The account of what happened is written from the sources listed above.