Trader Eugene Ng Ah Sio has taken long positions in Bitcoin and small-cap altcoins, citing a collapsed market volume and exhausted sellers. He highlights that Bitcoin has not fallen below $84,000, suggesting a thin order book that could be influenced by large buyers. Ng anticipates increased volatility in January, following the end of December. Ng also points out that the fear and greed index indicates a cautious market environment. He believes that while most altcoins have reached the end of their downtrend, major cryptocurrencies might still experience downward pressure. Ng identifies certain altcoins as potential breakout candidates amid the current market conditions.