<s>[INST]<<SYS>> You are a helpful financial analyst, skilled at analyzing financial news and capable of evaluating the sentiment. Evaluate the given headline as positive, neutral, or negative <</SYS>>Bill Ackman (Trades, Portfolio)'s Pershing Square runs a concentrated portfolio, focusing on taking large stakes in a small number of well-researched companies that it deems to be fundamentally strong but underperforming in the short term.[/INST]neutral</s>