Stocks are still in rally mode after the Nasdaq (^IXIC) Composite had its best first six months of year in four decades, and the S&P 500 (^GSPC) gained 16% during the same period.So where are stocks headed in the second half of 2023? Expect them to stay "fat and flat," say Goldman Sachs analysts.As the Federal Reserve has hiked interest rates in its battle against inflation, a big question for investors has been whether the central bank can achieve a soft landing, or an economic slowdown without a recession, in the US.Strong economic data has prompted Wall Street economists to reconsider their expectations for a recession this year.Goldman Sachs analysts wrote that "while a US soft landing with inflation normalizing remains our economists’ base case, there are lingering risks." yahoo