Quote from isaac000:
I use IB. This morning I got the "Regular trading hours only flag is not vald for this order" popup when I try to buy some shares of stock WOLF. I have never seen this popup before. Anyone know what's special with this stock? Thanks.
Quote from giggollo:
In IB TWS, go to
Configure->Order->Order Defaults->Other Default Order Settings
then look for the "Regular Trading Hours Only" checkbox at the very bottom. If it is checked, remove the checkmark and press OK