Hindsight Market

The Graveyard › 2003

Dianon Systems Inc

DIAN · Health Care · NASDAQ · in our data July 31, 1991 to January 17, 2003 (11.5 years)

The first trading day in our data for Dianon Systems Inc is July 31, 1991 (its first day in our records, which may be later than its listing and is not its founding). At its peak, on April 10, 2002, the market valued it at $859 million. It left the market when it was bought or merged, last trading at $47.49, -33.2% from its split-adjusted high. Holders got whatever the deal paid, which is not in our price data.

1991-072003-01
Peak market value$859 millionApril 10, 2002
Highest split-adjusted share price$71.09April 10, 2002
Last share price$47.49January 17, 2003
From its split-adjusted high to the end-33.2%
Return over the days in our data+493.6%with dividends, before the last trade
Worst single day-32.0%July 1, 2002

Share prices are adjusted for splits and other share changes, so the high and the last price compare like for like; the peak market value is as it was on the day. The return covers the trading days in our data only: it does not include what holders received, or lost, after the last trade (a merger payout, a bankruptcy), and it does not reach back before 1991. How these numbers are made · Report a data issue.

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Also gone in 2003: Health Care