Disciplined mutual fund managers who focus on growth stocks have continued to rack up gains this year. In fact, they are dominating the market, led by the $2.5 billion Virtus KAR Small-Cap Growth Fund, which returned 40.8% in the 12 months ended March 30. The Virtus KAR fund and other growth-stock funds have focused on the “micro” part of their job—looking for companies with solid fundamentals—while ignoring “macro” issues, such as rising interest rates, the chances of a trade war with China, or the question of whether valuations of market darlings such as Facebook and Netflix are sustainable. Read the original story from The Wall Street Journal.