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Date/Time: Fri, 07 Feb 2025 08:49:10 +0000



Post From: LMAX orders through web app can't be modified by SC (and attached orders consuming margin)

[2020-05-23 04:30:15]
Sierra Chart Engineering - Posts: 104368
: do the orders sitting on the SC server get sent to LMAX if the parent fills and my PC (for whatever reason) is not online with SC open at that time?
Yes definitely.

One thing to understand about stop orders on LMAX FIX is that they cannot be modified. They have to be canceled and then a new one submitted. The Sierra Chart server is doing that in the background.

This is probably the reason you see the message you do in post #5 as well.

We do not know why LMAX has this problem. Our exchange functionality, which we have developed and not yet released, has no trouble modifying stop orders. And delivers very high performance.

May we ask, why not just trade the Forex futures on the CME where there is reasonably good liquidity. Then you can use the Sierra Chart order routing service and have a very stable environment:
Sierra Chart / Trading Technologies Futures Order Routing Service

And the CME also has a micro gold contract. Here is a 5 minute chart of that:
http://www.sierrachart.com/image.php?Image=1590209294945.png


We currently use TT in the background for the order routing and not sure how margins would work with attached orders. This is going to be dependent on the clearing firm. But when we have our direct CME routing, the margin will be properly calculated for child orders. If there is a parent order and a target and a stop order, the margin requirement is just what is required for the parent order.

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And just to show you how much more widely used futures are than Forex among the Sierra Chart user base look at the following information:

For LMAX live trading we have 150 users.
For the Sierra Chart order routing service on TT we have 813 users.

LMAX has been around for many years now and the Sierra Chart order routing service has only been around for about 1.25 years. There has been a lot less interest in LMAX lately.
Sierra Chart Support - Engineering Level

Your definitive source for support. Other responses are from users. Try to keep your questions brief and to the point. Be aware of support policy:
https://www.sierrachart.com/index.php?l=PostingInformation.php#GeneralInformation

For the most reliable, advanced, and zero cost futures order routing, *change* to the Teton service:
Sierra Chart Teton Futures Order Routing
Date Time Of Last Edit: 2020-05-23 05:17:57