Why Santa Claus Turned His Back on the Stock Market

It wasn’t supposed to be this way. Investors had every reason to expect stocks to finish the year on a high note, but any Santa Claus rally is in real jeopardy now.

The NYSE Composite Index has plunged below both its 50-day and 200-day moving average for the first time since early October, a dangerous technical condition that presages deeper losses in the days to come. High-yield corporate bonds have been slammed back to late 2013 levels. Fear is in the air as the CBOE Volatility Index (VIX) surges higher. Safe-haven seekers are pouring into Treasury bonds, pushing the 10-year yield to 2.1 percent — a level not seen since June 2013. The bond market is pricing in serious trouble.

Historically, December is the strongest single month of the year for large-cap stocks. Moreover, the S&P 500 posted a consecutive run of 29 days above its five-day moving average — an unprecedented feat. And this comes on the heels of some impressive long-term consistency as well: As of the end of November, the S&P 500 has been above its five-month moving average for 29 months.

Moreover, the economic environment was seemingly favorable. GDP growth has been solid. Job growth has been strong. The drop in energy prices, with gasoline futures down by one-half from their summertime highs, is set to unlock an extra $1,000 or so in annual spending per middle-class household, according to Credit Suisse estimates. And although the Federal Reserve stopped its "QE3" bond buying program at the end of October, and seems to be inching toward the first rate hike since 2006, other major central banks were taking up the mantle of "print now or forever hold your peace."

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The Bank of Japan continues its monetary easing, gobbling up not only bonds but a variety of Japanese stocks as well. The People's Bank of China cut interest rates for the first time in two years. And the European Central Bank continues to tease investors about its own program to buy government bonds — with the foreplay going on for more than two years now.

But over the past week, the narrative has unraveled.

For one, the drop in crude oil is getting a little scary as it accelerates. Analysts are also crunching the numbers and realizing that, whatever consumer benefits may come, there will also be a clear downside from all this: Lower energy sector profits, less hiring in the shale states, less investment spending by energy companies (responsible for about a third of overall S&P 500 capex), and the rising risk of a high-yield credit event that could see indebted, high-cost shale oil producers go belly up.