The algorithm used by the algorithm exchange has evolved over time and has gone through three generations so far: The first generation of algorithm execution strategy targets are benchmarks generated by the market itself, such as volume-weighted average price (VWAP) or daily Open-high-low-close average price (Average of daily OHLC prices); Take VWAP as an example(When you say,you can click on VWAP on PPT,it will turn to next PPT , introducing how to calculate the VWAP.After you introduce it then click on the turn back arrow button,you will back to Type’s PPT ). It is calculated as an expression of the total value of transactions in a given instrument, divided by the number of instruments effectively traded in a predefined period of time. It gives an average price that is linked both to time and volumes transacted in the market; it therefore serves as a benchmark often used by traders when they want to assess the quality of an execution.