There are many issues involved in backtesting stocks and ETF's here are some very important issues. I write a 3 part series on TradersStudio.com about the issue with split adjusted data. Part1 Part2 Part3
correct, I use Ninjatrader and Multicharts. yes I can import 3000 symbols list but my datafeed Barchart can only run for 100 symbols or very max of 500 symbols for extra fees not more than 500 symbols
I use Ninja and Multicharts. thanks and that link wont solve problem, as even if you import all symbols, hard to get historical data for all Nasdaq symbols