[Cryptocurrency Concept Stocks Mostly Decline Pre-Market in U.S. Stocks, SBET Drops Over 2%] BlockBeats reports on August 28, according to BIT (bit.com) market data, cryptocurrency concept stocks mostly declined in U.S. stock pre-market trading, including: CRCL down 1.06%, MSTR down 1.15%, MARA down 1.26%, COIN down 0.82%, RIOT down 0.81%, BMNR down 1.25%, SBET down 2.25%, PURR down 1.03%.