Or due to OM flash crash and accidental triggering of strategies, the abnormal algorithm of market makers has pushed up the BTCDOM perpetual contract by 20% According to equation analysis, an unidentified market maker made an algorithm error after the OM (Mantra) crash and unexpectedly boosted the BTCDOM (Bitcoin Market Cap Index) perpetual contract on the Binance platform by 20%. The BTCDOM index includes the top 20 cryptocurrencies in terms of listed value of Binance and Binance contracts, excluding BTC and stablecoins, with an OM weight of only about 5%. The abnormal fluctuation this time is suspected to be due to the market maker's erroneous judgment that the drastic fluctuation of OM price is a change in market structure, which mistakenly triggered a strategic buying operation.