In a previous column, published on Feb. 28, I predicted that medium-cap and small-cap stocks would surge, powered by their “favorable fundamentals and low valuations.” Last week, the latter process did indeed occur to a very large extent. Meanwhile, boding well for the tech sector. the artificial intelligence boom is spreading to many more stocks. And in a phenomenon that’s lifting many consumer discretionary equities, investors’ confidence in the economy appears to be rapidly improving. All in all, it does ...