Optimism in the air. The S&P 500 is up 4% so far this year, and the Q4 earnings results – we’re about halfway through the reporting season – have been better than expected. The conventional wisdom, and hints from the Federal Reserve, say that interest rates will start coming down later this year, and there’s a growing belief that the economy may have dodged the recession bullet. In his recent market strategy note, Oppenheimer’s chief investment strategist John Stoltzfus describes the current moo