Billionaire investor Ken Griffin's hedge funds performed well in February, outperforming the S&P 500. The firm's flagship multistrategy Wellington fund rose 1.9% and its year-to-date gain is 2.9%. All five of the firm's core strategies finished in positive territory in February. The S&S fell 0.9%, amid concerns about AI-linked and software shares and potential economic disruptions. The company had $66 billion in assets under management as of February.