For more than 20 years, Sarah Ketterer, 53, has been searching for undervalued stocks around the globe. Though Causeway Capital Management, the Los Angeles firm she co-founded in 2001, does invest in U.S. stocks, its portfolios have an international focus, and it has a good record. The flagship $6.3 billion Causeway International Value fund (ticker: CIVVX) has a three- and five-year annual return of 10.81% and 14.54%, respectively — placing it in the top 10% of its Morningstar category for both periods. In running portfolios, Ketterer, the firm’s CEO and co-portfolio manager, and her colleagues blend quantitative…