0.nytimes.com —
In a long-awaited report on one of wildest days in Wall Street’s history, regulators said that the automated sale of a large block of futures by a mutual fund — not named in the report, but identified by officials as Waddell & Reed Financial, of Overland Park, Kan. — touched off a chain reaction of events on May 6. The Dow Jones industrial average plunged more than 600 points in a matter of minutes that day and then recovered in a blink.
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