Modifying orders?

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Modifying orders?

Simon Thornington

posted Jul 13, 2015

Hi all,

Is there a way to modify resting limit/stop orders, updating the quantity? I am having difficulty keeping a stop order in sync with the actual position size, as fills on the original entry order dribble in. I naturally want the stop-loss to be for my position amount, no more or less, so I am trying to modify the stop order on every minute with the amount of my position, but it looks like I'll have to cancel and resubmit the order? (which makes iterating through the open stop orders while adding and removing them a bit tedious).

Simon.

4 responses

If you don't want to iterate over and over and waste valuable time, save the quantites in a dictionary indexed by assets, and keep it up to date.

Or build your own "stop order" into your code.

Simon Thornington

I'm hesitant to store things like quantities or prices in a dictionary in context, since I'm pretty sure all that will blow up the day after a split...

Simon Thornington

I do store weights of course, and stopped-out times etc. Oh well!

So the technical answer for modifying orders in Quantopian is "no"? No API to do it?

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The material on this website is provided for informational purposes only and does not constitute an offer to sell, a solicitation to buy, or a recommendation or endorsement for any security or strategy, nor does it constitute an offer to provide investment advisory services by Quantopian.

In addition, the material offers no opinion with respect to the suitability of any security or specific investment. No information contained herein should be regarded as a suggestion to engage in or refrain from any investment-related course of action as none of Quantopian nor any of its affiliates is undertaking to provide investment advice, act as an adviser to any plan or entity subject to the Employee Retirement Income Security Act of 1974, as amended, individual retirement account or individual retirement annuity, or give advice in a fiduciary capacity with respect to the materials presented herein. If you are an individual retirement or other investor, contact your financial advisor or other fiduciary unrelated to Quantopian about whether any given investment idea, strategy, product or service described herein may be appropriate for your circumstances. All investments involve risk, including loss of principal. Quantopian makes no guarantees as to the accuracy or completeness of the views expressed in the website. The views are subject to change, and may have become unreliable for various reasons, including changes in market conditions or economic circumstances.