[K33 analyst Vetle Lunde: Market liquidation data in the past three years has been seriously underestimated, and the liquidation data reported by major crypto exchanges has lost trading reference value] On August 30, K33 analyst Vetle Lunde said that the liquidation data of the exchange is far lower than the actual market liquidation volume. In order to provide a "fair trading environment" (Bybit, September 2021) and "optimize user data flow" (Binance, April 2021), Binance and Bybit changed their liquidation WebSocket API to push liquidations once a second instead of reporting all liquidations. OKX also pushes a maximum of one order per second for each contract, and their data does not represent the total number of liquidations. The consequence of this is that market liquidation data has been seriously underestimated in the past three years. He said that "the current liquidation data is relatively worthless as pure market information."