Sustainable Growth Advisers (SGA), an investment management company, released its third-quarter investor letter for its “U.S. Large Cap Growth Strategy.” A copy of the letter can be downloaded here. The portfolio returned -1.3% (Gross) and -1.4% (Net) in the third quarter, compared to a 10.5% return for the Russell 1000 Growth Index and an 8.1% return for the S&P 500 Index. SGA’s investment objective is to invest in high-quality growth businesses expected to achieve consistent mid-teens earnings growth, acc ...