For years, investors have been, to use an old-fashioned phrase, in the chips. And very into chip stocks. That’s been reflected by the outstanding long-term performance of ETFs that track the semiconductor sector, such as the $35 billion VanEck Semiconductor ETF (SMH). It was one of the first to track this key sub-sector of technology, debuting back in 2011. That was well before artificial intelligence was running the show. But that’s simply the most contemporary application of the semiconductor industry, ...