Barry Cohen
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      Posts: 1844
Joined: 10/11/2012
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That setting allows you to limit the number of strategies that trade the same security. For example, if 1 is selected, there will never be more than one position open per symbol in that account. Although you still may have a new open order & closing order on the same day for the same symbol (still only one position open at a time).
If this happens & you're trading through the Trade Processor, it will aggregate the open & closing orders together to get a total number of shares, then submit that total to the broker, which could result in more shares bought, more shares sold, or nothing submitted if the share size equals zero.
You made the change on 1/3/2017, so at that point it should reflect the change, with the next morning's submissions.
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