S&P 500etf is T+0, that is, investors can buy and sell on the same day. Only commission is charged when trading, and the rate is not more than three thousandths. Different securities companies have different rates, generally around three thousandths.

When trading the S&P 500etf, investors can look for trading opportunities in combination with the trend of the S&P 500 index, that is, buy when the S&P 500 index rises and sell when the S&P 500 index falls.