Shares of U.S. crypto-centric companies ticked upward in pre-market trading, riding the momentum of the latest rally in BTC and reflecting the fresh optimism of a spot bitcoin ETF finally being approved in the U.S. Coinbase was up about 4% as of around 6.00 ET, while MicroStrategy, the software developer that holds over 150,000 BTC on its balance sheet, rose almost 5%. Mining firms Marathon and Riot advanced around 9.8% and 6% respectively. Robinhood showed more restrained gains of 2.5%, having dropped 14% on Wednesday after reporting big drops in its revenue and trading activity.