There is no price limit in the United States, and it is T+0, which can be sold on the day of purchase.

Of course, there are also related measures, "fuse mechanism": the fuse mechanism of US stocks is divided into three levels, and the first-level fuse mechanism falls by 7%; The second level is down13%; The third level is 20%. Triggering the primary or secondary fuse mechanism between 9:30 am and 3:25 pm will cause the transaction to be suspended 15 minutes.