U.K. hedge fund Lansdowne Partners has reportedly navigated September’s market volatility more successfully than many of its peers.  The company’s flagship $12 billion Developed Market Fund, managed by Peter Davies and Stuart Roden, booked 2% gains for the month, according to the Wall Street Journal. The return was due partly to a short position in beleaguered commodities giant Glencore. The result brought Lansdowne’s 2015 year-to-date performance to more than 14%, far in excess of the average equity long/short hedge fund’s 2.2% decline, according to Hedge Fund Research, and one of the best performances of any major hedge fund. Founded in...