[Mixed Performance of Crypto Concept Stocks in U.S. Pre-Market Trading, COIN Up 2.23%, PURR Down 2.33%] BlockBeats News, September 14, according to BIT (bit.com) market data, U.S. pre-market crypto concept stocks showed mixed performance, among which: MSTR up 0.04%, CRCL up 1.69%, COIN up 2.23%, STRC down 0.08%, BMNR down 0.88%, SBET down 0.65%, HOOD down 0.08%, PURR down 2.33%.