Trading from Multiple Charts on One Instrument
Revision as of 15:19, 19 March 2012 by Andrew MultiCharts (talk | contribs) (Created page with "==General Understanding of the Situation== When a customer uses 2 or more separate charts and auto trade from these charts on the same instrument on the same account of the s...")
General Understanding of the Situation
When a customer uses 2 or more separate charts and auto trade from these charts on the same instrument on the same account of the same broker, then the strategies that are used on the charts are not connected in anyway (if global variables are not used in their scripts to pass values between them). Even if MarketPosition_at_broker is used, it simply can get the real position from broker, but the actual position on chart may differ in this case. The following example can demonstrate a simple possible scenario of trading from 2 charts on the same instrument:
Example: Market position at broker = 0. Market position on each chart = 0. If your strategy on chart A generates a long entry, then the strategy on chart B doesn't know about it. If the strategy on Chart B goes short, then chart A also doesn't know about it. So the strategies continue trading individually on their charts, preserving their chart positions. However, since the instrument at broker is the same, the market position at broker on the instrument is the net position of the orders sent from both charts. In this example the position will be flat after 1 order from each chart.
If the chart A sends short entry order, which is reverse in fact, then the broker receives 2 commands from MC at this moments: 1) to close open +1 long position (chart A assumes that it is still open) that is in fact an order to sell 1 contract; and 2) to open -1 short position. If we take into consideration that the real broker position by that moment is 0, then it gets sell 1 contract and sell another 1 contract, the actual position at broker on for this instrument becomes -2. The chart B still assumes that the position is -1 meanwhile. Similar scenario but in the opposite direction if the reverce order would have been sent from chart B.
If the chart A sends short entry order, which is reverse in fact, then the broker receives 2 commands from MC at this moments: 1) to close open +1 long position (chart A assumes that it is still open) that is in fact an order to sell 1 contract; and 2) to open -1 short position. If we take into consideration that the real broker position by that moment is 0, then it gets sell 1 contract and sell another 1 contract, the actual position at broker on for this instrument becomes -2. The chart B still assumes that the position is -1 meanwhile. Similar scenario but in the opposite direction if the reverce order would have been sent from chart B.
