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Alexion Pharmaceuticals

ALXN · Chemicals & Drugs · NASDAQ · in our data February 28, 1996 to July 20, 2021 (25.4 years)

The first trading day in our data for Alexion Pharmaceuticals is February 28, 1996 (its first day in our records, which may be later than its listing and is not its founding). At its peak, on July 23, 2015, the market valued it at $47.0 billion. It left the market when it was bought or merged, last trading at $182.50, -12.2% from its split-adjusted high. Holders got whatever the deal paid, which is not in our price data.

1996-022021-07
Peak market value$47.0 billionJuly 23, 2015
Highest split-adjusted share price$207.84July 23, 2015
Last share price$182.50July 20, 2021
From its split-adjusted high to the end-12.2%
Return over the days in our data+7900.0%with dividends, before the last trade
Worst single day-31.2%March 30, 2000

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 1996.

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Also gone in 2021: Chemicals & Drugs