by CryptoRank 
According to the latest data from the monitoring resource CryptoRank.io, May 2020 is marked with skyrocketing of derivatives volume.
A new all-time high was set at the $641B level, which means a 43% increase compared to April $449B.
The majority of May volume came from Huobi, OKEx and Binance, making up 82% of market share:
Huobi – $237B;
OKEx – $150B;
Binance – $139B;
BitMEX – $82B.
https://cryptorank.io/derivatives-analytics/btc-futures
