This is a tool for taking advantage of the spread of different contracts on BITMEX, and USDT also.
For example,
BITMEX
When the spread is enlarge into 3rd deviation, it can only sustain for 0.03% of all the spreading time. So, in that case, we can short the higher contract and long the lower contract, to gain profit from it's future closing gap movement, with 3x we can gain 3%-5% in every trade.
USDT
When the spread of USDT enlarge, like on the chart, into 6%, we can buy USDT and hold it to the meanline 0, then sell it. 6% gained.
One indicator can help me gain profit from trading the spread on two different pairs: XBTUSD, XBTH19 and XBTM19 pair and USDT, USD pair.