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StopOrder Not Entering
Gregory Milne
posted Nov 20, 2014

The 30% of security is ordered, but when I try to enter the stop order nothing submits. It has been driving me nuts all day. Any thoughts?

 # If we haven't traded this security today  
            if data[s]['traded'] == 0:  
                # Buy 30% of the security  
                order_target_percent( s, 0.3 )  
                # --- WHY WON'T THIS STOP ORDER ENTER --- #  
                # Put a stop loss in for 1%  
                okstop = c_price * 0.99  
                order_id = order_target_percent( s, 0, style=StopOrder( okstop ) )  
                print order_id # RETURNS NONE  
                # --------------------------------------- #
1 response
Seong Lee
Nov 20, 2014

Hi Gregory,

What's happening is that the order_target_percent() methods your portfolio value at the current bar in order to determine whether it needs to place an order or not. So when you have two order_target_percents next to each other, and the default orders being that orders are executed at the next bar, your portfolio doesn't get updated until the next bar. This means that your order_target_percent method doesn't understand that you just placed an order for 30% of stock s, and therefore won't place an order for 0 percent of stock s with your stop-loss. A different way of going about this is to use your current portfolio value to determine how many dollars you're ordering, and using that dollar amount, calculate the amount of shares you'd need to order in order to get to 0% and put in a straight order(s, X, stoporder)

Hope that helps!

Seong

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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.