In our backtester, we only support market, limit, stop, and stop-limit orders. We don't have GTC available.

In addition, for IB traders, we support VWAPBestEffort and RelativeOrder (docs

We get requests to support GTC orders, and we probably will in the future, but until then you will need to re-order any standing orders every morning.

Thanks Dan, appreciate the response

Dan, how would I go about that (re-ordering open orders from previous day following morning)? Do I need to save open orders before close and then next morning check if

Thank you in advance.

From the viewing angle of real-time live trading, IMHO, this feature (GTC orders) is rated the highest!

Once in a while there will be a disruption of the connection between Quantopian and the broker’s server (see http://status.quantopian.com/).

Such loss of communication will require the user to re-enter Login Credentials in order to re-connect / re-launch the algorithm. This may take time, especially if you are not sitting next to your workstation daily.

Should such a disruption happen, GTC orders are the only way to liquidate positions, autonomously by the broker, before the algorithm owner initiated the re-connection (or even before being alerted by Quantopian that such outage happened).

With GTC orders, users shall keep such liquidation orders at about 5% below current price. Then, regularly whenever each asset price shifts (up or down) update such GTC liquidation orders. Working in this manner is the only feasible watchdog to save us from holding undesired positions which would have been sold by the algorithm (had it been connected to the broker during the disruption).

Prevention is better than cure: having such kind of orders stationed in the broker’s system, will keep all of us safe in case of trouble.

And, Dan, re your suggestion above, this is not practical for outage events. Technology might fail; for responsible live trading, you can't do without Good-Til-Canceled orders.

Thank you in advance.