Thanks JBookTrader for making it so much clearer for me.  Keith

On Jun 1, 11:08 am, nonlinear5 <[email protected]> wrote:
> > I have just discovered this yesterday and turn on all the default
> > strategies to live trade EUR on my paper account while I slept here in
> > Vancouver, BC and switched it on ES this morning.
>
> > I noticed the following:
>
> > 1.  One one point I had five -1 positions, then one strategy went long
> > and my TWS screen then showed only four -1 positions - i.e. one long
> > canceled one short - is this the expected behaviour?  JBOT's table
> > continues to show me 6 positions and continues to calculate all 6
> > positions.
>
> As Jean had already pointed out, the paper trading account is not
> suitable for testing. The are well known problems with it, especially
> when it comes to order placement. You can actually reproduce these
> problems without using JBT. If your purpose is to test your trading
> strategies with JBT, the best thing to do is to start TWS with a real
> account, and then run JBT strategies as "forward test". In the
> "forward test" mode, everything will be exactly as with the trading
> mode, except that no actual trades will be placed with your IB
> account. Instead, JBT will simulate the fills. This simulation is
> actually quite accurate in regards to slippage, as numerous people
> have reported. So, the bottom line is, use real IB account, and test
> your strategies in the "forward test" mode.
>
> > 2. I tried to turn on all the base instruments on my paper account
> > this morning beginning with ES, NQ and YM. It seems IB allows only 3
> > market depths instruments(JBOT error or warning dialog said so),
> > however I am only able to monitor two (ES and YM). JBOT turns on YM,
> > shows zeros and says it is running but there is no activity on that
> > line.  Is this the default behaviour?  Do we have more market depth if
> > we use our live account?
>
> The amount of data that is being transmitted when you subscribe to
> market depth is enormous, so IB limits it to 3 symbols. This does not
> mean, however, that you can't run more than three strategies and the
> same time. In fact, you can run as many as you want, as long as the
> total number of symbols does not exceed 3. For example, 10 ES
> strategies, 10 YM strategies, and 10 NQ strategies.

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