On Wall Street, the "Roaring 2020s" will continue in the year ahead. That's at least according veteran strategist Ed Yardeni, who wrote in a note to clients on Monday that he expects the S&P 500 to reach 7,700 by the end of next year. "The Roaring 2020s remains our base-case scenario. For 2026, we are raising our subjective odds of this prospect from 50% to 60%. We are less concerned about a meltup [or] meltdown scenario now, so we are lowering the odds of that from 30% to 20%. We are keeping our bearish ...