Investors will keep focusing on market fundamentals, says Sam Stovall. Though he expects a good year, he warns that historically, we’re reaching the end of a pattern for double-digit gains. He highlights tech, utilities, and communication services, and potentially financials. Turning to the Fed, he doesn’t expect the first cut until April. He explains what a failed Santa Claus rally could mean for January trading, which often previews the rest of the year.