 Takung Art Co Ltd NYSE:TKAT shares spiked over 49 on Thursday in the regular and after-hours session but the non-fungible token buzz also enveloped the shares of Jiayin Group Inc NASDAQ:JFIN which soared over 84 in the two sessions. What Happened: Chinese fintech company Jiayins shares touched a high of 13.60 in intraday trading on Thursday more than doubling over Wednesdays close of 5.42, amid social media speculation that it could enter the NFT space. 