Santiment analyst Brian Quinlivan has indicated that Bitcoin may underperform in the third quarter, despite social media expectations for a new all-time high. Quinlivan noted that market trends often counter retail sentiment, suggesting a bull run is unlikely without significant skepticism. He highlighted that Bitcoin's repeated approaches to all-time highs have led to subdued market sentiment, which could eventually drive prices higher. Meanwhile, Quinlivan pointed to Ethereum as having a catch-up opportunity, suggesting investors might focus on its potential gains.