I use scottrade. There is a button under trade.

Click "pre/after market" button and you can submit your trade orders. Pre-market is 6:00 am - 9:28 am and after market is 4:02 pm - 8:00 pm. However, They have to be limit orders. However, I don't know about Vanguard Account Trade. You can give them a call. 

所有跟帖： 

• 谢谢 ！问过Vanguard，没有。看来要开其他账户了。 -iwantosayno- ♀ (0 bytes) () 10/06/2015 postreply 10:27:41

• Could try scottrade or TD Ameritrade. -ceramic_baby- ♂ (0 bytes) () 10/06/2015 postreply 10:33:13

• 好的，谢谢！ -iwantosayno- ♀ (0 bytes) () 10/06/2015 postreply 10:41:42

• 瓷宝，我用的是etrade，上次在pre market买了500 股jnug，除了交Commission $9.99， 还要交不 -书简- ♂ (0 bytes) () 10/06/2015 postreply 12:34:02

• 补充 -书简- ♂ (418 bytes) () 10/06/2015 postreply 12:39:44