Wall Street has been upbeat in the first half of 2023 despite a few occasional hiccups, mainly due to a less-hawkish Fed, better-than-expected corporate earnings and the AI mania. The U.S. Treasury yields have been on a surge lately, driven by expectations that the Fed will keep interest rates higher for longer to fight inflation. With unrelenting demand, soaring 2022 earnings estimates, and $1.5 billion for repurchasing shares, retail investors could jump in at any time.