VWAP and MVWAP
Volume-weighted average price (VWAP) and moving volume-weighted average price (MVWAP) are trading tools that can be used by all traders to ensure they are getting the best price. However, these tools are used most frequently by short-term traders and in algorithm-based trading programs.
The VWAP is used as a benchmark to determine the quality of executions in large orders. For example, if a portfolio manager wants to acquire thousands of shares, but also wants to purchase the position below the average price for the day, the VWAP will usually be the price to beat.