ZK International (ZKIN) jumped 8.4% after a positive mention from Seeking Alpha contributor White Diamond Research.White Diamond highlights in a new report that ZKIN's xSigman unit it now setup to have a trading platform to sell crypto tokens, NFTs, and other products for digital trading.The post is titled "ZK International Is Building The Robinhood Of Crypto And CFD Trading."Recall March 24, ZK International shares surge on forming subsidiary to acquire online gaming assets.