Unlimited times. According to the information of query stock bar network, 25% of the maximum position of quantitative trading ticket is the fuse to ensure the stable appreciation of account funds, so there is no limit to the number of transactions in one day. Quantitative trading refers to the use of advanced mathematical models instead of manual subjective judgment, and the use of computer technology to select a variety of "high probability" events that can bring excess returns from huge historical data to formulate strategies.