The $165 billion hedge fund gained 4.0% in September in its flagship multi-strategy fund, Apex Strategy, which has generated a 15.6% return from the start of the year to September 30. The fund posted a 2.9% return for the month in its AQR Delphi Long-Short Equity Strategy, bringing the overall performance to a positive 14.3% for the year. AQR’s Managed Futures Full Volatility Strategy posted a 9.3% return for the month of September, garnering a 17.7% return year-to-date. These results beat a wider collection of systematic hedge funds, whose algorithms ride market trends until they peter out. An index that tracks these kinds of trend funds is down on average over 2% for the year so far, according to Societe Generale’s indices.