The 15-month bull run of U.S. stock markets suffered a surprise setback in April. We believe that April’s meltdown was nothing but a bull market correction, and this time a welcome one, as Wall Street has rebounded in May.The Department of Labor reported that the U.S. economy added 175,000 jobs in April, missing the consensus estimate of 200,000. Job additions in March were revised upward by 12,000 while those in February were revised downward by 34,000. The unemployment rate increased to 3.9% in April, com ...