Stocks traded near the flatline for most of Wednesday’s session, with advancers having a slight edge over decliners on both exchanges. With only two trading days left in 2023, the S&P 500 is closing in on an all-time high. Tesla gave an early buy signal ahead of Q4 delivery data; Vertex is holding gains well, and recent IPO Birkenstock isn’t far from an all-time high after an inauspicious debut in October.