Originally posted by x-or
In fact, I would like to know what data I'm missing with IB quotes. I've got a pretty good idea from experience but really ?
i subscribed to esignal 30 day trial to compare IB data with a real data feed. It's so sad for esignal but I saw absolutely no difference between both !
Did anyone already compared IB quotes with another pro data feed ? Do we miss a lot with IB ?
IB updates its quotes every .7 seconds. Therefore trading Eurostoxx 50 or DAX, you normally won't miss a lot with IB. It's totally different when trading ES-Minis. If a Tradeprogram hits the market, you won't get a fill with IB's quotes (unless you enter at the Market), as the market more often than not has moved away by 1 or 2 ticks from IB's quotes, before IB refreshes the quotes.
If you enter or exit the trades with TWS, then it really makes no difference, as you can't be that fast, that you won't have a slippage of 0.7 seconds, even if you only need to press the mouse button.
But if you use any type of semi-automatic Tradesystem, eg a software supporting Trailing Stops, the software should use the fastest Dataprovider you can afford. Eurostoxx and Dax can tank or shoot up 10 Ticks in the blink of an eye. (I mainly trade the DAX, and really have been saved more than once, by using the ESignal datafeed. Of cause it freezes sometimes, but that's something IB's quotes also do from time to time. Solution: The software allows you to switch.)
On a real T&S (not IB's) you can see there were still some trades in between these 10 Ticks, but only a few at each pricelevel, as effectivly a huge order hit the market, buying or selling through multiple pricelevels. If in such a situation your Trailing Stop has been hit, you can only hope, that your Quotes are up to date to be able to enter a order before the spike eats through all your gains.
croc
trading
