Altera
ALTR · Electronics · NASDAQ · in our data March 31, 1988 to December 24, 2015 (27.7 years)
The first trading day in our data for Altera is March 31, 1988 (its first day in our records, which may be later than its listing and is not its founding). At its peak, on August 31, 2000, the market valued it at $25.9 billion. It left the market when it was bought or merged, last trading at $53.96, -7.7% from its split-adjusted high. Holders got whatever the deal paid, which is not in our price data.
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 1988.
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