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New orders filled without of my control

I am just practicing with pair trading. Due to code conditions new orders pair issues on start and any time when both orders of previous pair are closed. But code works in very strange way. One of securities traded only once and another security position changes very often despite of condition to change the position does not happen.

Could you please help me figure out where I make mistake.

4 responses

Hi Anton,

It looks like your algorithm might be over-ordering. You might want to include a guard to not trade when you have any open orders. You can do this by using get_open_orders(). For more on this, check out Lesson 10 of the Getting Started Tutorial.

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Hello, Jamie! Thanks for your point. I guessed that 20 shares of liquid security by MKT order in the beginning of trading day is something about microseconds. Well, I've added check you referred to, but situation don't changes. Please take a look.

Hi Anton,

It looks like the issue might be coming from the profit taking/stop loss part of your algo, here's a version where the open orders check is at the start of handle_data.

Yeap, you're right! Thank you so much!