SGX's bitcoin (BTC) and ether (ETH) perpetual futures have become increasingly popular since their debut two weeks ago, and that growth represents new liquidity rather than cash redirected from elsewhere, said Michael Syn, president of the SGX Group. The products, cryptocurrency derivatives that allow institutional traders to speculate on the price of an asset without an expiration date, saw nearly 2,000 lots traded on Nov. 24, representing about $32 million in notional value. That's crept up to $250 mill ...