Warning Signals Flash in Crypto Ahead of Bitcoin’s High-Performance Month

Bitcoin Gains as October Nears, But Cautionary Signals Appear – 29/9/2025

Bitcoin (BTC) is edging higher as October approaches, historically its strongest month of the year. Ether (ETH) and the rest of the CoinDesk 20 Index are also in the green, with the index up 3.0% over the past 24 hours.

Despite the positive momentum, traders should remain cautious. Futures markets are showing a reduced bullish bias, while options activity continues to send mixed signals.

Exchange-traded funds are also seeing net outflows. Both U.S. spot Bitcoin ETFs and Ether ETFs recorded withdrawals on Friday, marking the fifth consecutive day of outflows for ETH ETFs—the longest streak since September 8.

Another potential warning is the CME futures gap, the difference between Bitcoin’s Friday close and Sunday open. The gap currently sits below the spot price, and historically, these gaps are often filled, adding another layer of caution for investors.