GaryM![]() Member Posts: 6 Joined: 1/16/2004 Location: The Woodlands, TX ![]() | Barry- You mentioned that the chart of AAPL from the three data sources looked the same, but didn't mention whether historical data dropped below $0 in price at any time. I uninstalled and reinstalled OmniData and still have the same issue. I am attaching the AAPL chart that shows that prior to mid-2009 the price dipped below zero dollars and from Jan 2008 and everything earlier it stayed below Zero $$$ and even shows to be as low as $-20 for everything prior to 2005. Are you showing these negative values also? Is that a concern for using such data in simulations? Thanks for any help you can provide. ![]() |