For those of you using or considering e-signal data for end of day or intraday trading, be careful! I have used e-signal data for the last 8 months and have realized the data frequently includes missing or extra quotes which are not corrected as time goes on. Using e-signal data has caused me grief in attempting to do backtesting or actually making trades. Interestingly, Yahoo's free EOD data is quite good compared to e-signal.
Use the "Database Purify" option under tools in Amibroker to check it out. BTW, e-signal is refunding me the remainder of my annual subscription costs after reviewing several examples I sent them showing data inaccuracies. Larry
