PJ Sutherland, a portfolio manager at Sutherland Capital Management, shares his expertise in short-term equities trading, focusing on mean reversion and trend-following strategies. He discusses the balance between emotional trading and data-driven decision-making. Insights into the importance of position sizing are shared, especially from the meme stock craze. Sutherland emphasizes the synergy between mean reversion and trend strategies to mitigate risks and enhance trading success. He also touches on the emotional challenges traders face and the need for tailored trading engines.