Because there are three days, anything can happen. For example, you saw a news today that the price of coal has gone up, and then you bought it. As a result, the next day I said that the news of price increase was actually false. And then I couldn't sell it the next day. You have to wait three days to sell it. This will make your trading very passive.
Extended data:
Different accounts of US stocks correspond to different trading systems.
1. Cash account:
No matter how much money there is in the cash account, it can only be traded again after the funds are delivered (refer to the T+2 delivery system above). If investors buy stocks with unfinished funds and sell stocks before the funds are delivered, it will cause illegal operations.
In addition, for cash accounts, there are two other situations that will directly face the 90-day account limit.
(1) After trading in the cash account T+0 (buying stocks on the same day and selling them on the same day), the funds are in an undelivered state at this time, and you use the undelivered funds to trade again on the same day.
(2) When you sell the unpaid shares before the delivery date again. For example, you have $65,438+0,000 in cash in your account. You place an order to buy stock A, but when you place an order, the stock price suddenly soars, causing the bill to be sold at $65,438+0,300. Due to insufficient cash in the account, these shares have not been paid in full. You must deposit more than $300 in cash within five working days before you can sell the stock, otherwise you will directly face the 90-day limit.
How can I effectively avoid the 90-day limit of my account? There are two ways:
(1) inject more funds before trading, so that there will be no situation of buying stocks with unfinished funds.
(2) Opening a financing account
2. Margin account
When the total assets are between $2,000 and $25,000, the trading system is T+ 1, that is to say, the stock can be traded again within 1 trading days after the transaction, and T+0 trading can be conducted at most three times within five trading days.
If it is done four times, the account will be banned from trading for three working days, waiting for the delivery of funds. After the funds are delivered, they will be automatically converted into cash accounts, and re-apply for margin financing and securities lending after 90 days.
About daily write-off account: When the total assets of your account exceed $25,000, and the general margin financing and securities lending account exceeds $25,000 for one week in a row, and the number of write-off transactions on the same day accounts for more than 6% of the total transactions in these five days, it will be automatically defined as daily write-off account, and the T+0 trading system will be implemented, so that you can completely get rid of the shackles of the T+3 delivery system, and buy buy will buy it.
For high-frequency transactions, the rule of account reversal on the same day is adopted. (Note _: In this process, you must be a margin account with funds exceeding $25,000.