Bitcoin futures buy volume is up, signaling bullish sentiment in October. CME Group’s $110,000 gap remains unfilled. Bitcoin ETF options see increased interest with IBIT open interest nearing $40 billion. Traders are aggressively taking long positions as Bitcoin approaches all-time highs. Futures markets show a significant shift towards buying sentiment. Bitcoin ETFs in the US saw over $600 million in net flows. IBIT options now surpass Deribit, with open interest at $38 billion. Bloomberg analyst notes the significance of ETF growth in the Bitcoin market.

Read more at Cointelegraph: Bitcoin Futures Trades Flip Bullish Into $121K BTC highs