I'm looking for a stock symbol change history data provider. NASDAQ provides some (from the 6 months ago and to the today) at http://www.nasdaq.com/asp/symbolchangehistory.asp but I need: 1) older than that (for at least 2-3 years) 2) NASDAQ + NYSE traded symbols. Is there any provider where I can find such information? And of course, I'd prefer automated one. Thanks!