I use ZLT. ZLT allows the option of sending a stop to IB or the exchange (if the stop order is native). Or ZLT allows a Zstop/Zstoplimit which is held on your machine and executed by ZLT/via your computer. It really depends on what kind of stop you want to do. For instance a Stop Limit on CME is not held at IB. It is a native order held directly on Globex. A stop order would be held on IB's servers. A stop order on CME is NOT native. On Clearport IB replicates the stop you want. Or ZLT can do a Zstop. Do your homework and be careful.
As soon as you SEE the Order in the API-page in TWS itself, you can be sure the it is send to the IB-Server (if status is accepted).
The order can be held at three different places: exchange server, IB server, or your computer. It depends on the order type and the exchange. Also the frontend. For ZLT, any order type starting with 'Z', such as ZSTP, ZSTPLMT, and RATIO_LMT/RAITO_MKT are held on your local computer. All the other order types are either at IB server or exchange server. You can find more information on IB's web site. Here is an example of GLOBEX: http://www.interactivebrokers.com/en/trading/exchanges.php?exch=globex&ib_entity=llc It shows STPLMT and LMT orders to GLOBEX are held on the exchange server. But STP order to GLOBEX are held on IB Server. zltrader www.zerolinetrader.com
Well the problem here is that you must have an account with IB Strategy Runner is the only broker neutral platform that is server based. you can get better margin/leverage with firms other then IB also better support (dealing with IB you should get used to dealing with email support and not being able to talk to a real person)
Well. I give up ! (last post from me on this). You are only posting false information. First this: "Strategy Runner is the only platform that holds stops on the server side" Then this: "dealing with IB you should get used to dealing with email support and not being able to talk to a real person" Both false ! Please keep to the facts !