Different definitions: changing hands usually refers to the number of transactions between buyers and sellers, that is, buying or selling an equal share of futures from one person to another. The turnover Z, also known as "turnover rate", refers to the turnover frequency of stocks in the market in a certain period of time and is one of the indicators reflecting the strength of stock liquidity.

The calculation method is different: the turnover formula is: turnover rate (turnover rate) = turnover in a certain period. The formula of changing hands Z is: turnover/total number of shares issued in a certain period × 100%.