If you own gold, you’re basically short stocks

Gold and the stock market have never quite seen eye to eye, but recently the relationship has become one of outright antagonism. That means an investor looking to hedge against a potential market drop could do much worse than picking up some gold.

Here are the numbers: Since the beginning of the year, the 60-session correlation between the (daily changes of the) S&P 500 and gold has sunk from 0.18 to -0.49.

Since correlations run from 1 to -1, with 1 representing the correlation of an asset with itself, -1 indicating an exactly opposing relationship and 0 meaning perfect indifference, this is a huge swing that would appear to indicate a big change in how gold and stocks are interacting.

Correlations, especially those that use short time spans to measure the relationships among volatile assets, are notoriously squidgy. Yet when the 60-session correlation falls to the lowest level in at least 10 years and stays in that range, it is a decent indication that something notable is underway.

To be sure, the 10-year note is experiencing a more deeply negative correlation with the S&P; over the past 60 days, that figure is -0.63. However, gold makes a much more efficient hedge due to its greater volatility. The beta measure, which uses both correlation and a comparison between the volatility measures of two different assets, tells us that gold has a beta of -0.6 to the S&P; the far less volatile 10-year note has a beta of -0.24.

Translation: For every 10 percent stocks fall, gold should be expected to rise 6 percent, while 10-year note futures should only be expected to rise 2.4 percent.

That means that for those who are nervous about the market and hold a broad portfolio of large-cap stocks, gold could make for a prime hedging candidate.


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Michael Santoli

Michael Santoli joined CNBC in October 2015 as a Senior Markets Commentator, based at the network's Global Headquarters in Englewood Cliffs, N.J.  Santoli brings his extensive markets expertise to CNBC's Business Day programming, with a regular appearance on CNBC's “Closing Bell (M-F, 3PM-5PM ET).   In addition, he contributes to CNBCand CNBC PRO, writing regular articles and creating original digital videos.

Previously, Santoli was a Senior Columnist at Yahoo Finance, where he wrote analysis and commentary on the stock market, corporate news and the economy. He also appeared on Yahoo Finance video programs, where he offered insights on the most important business stories of the day, and was a regular contributor to CNBC and other networks.

Follow Michael Santoli on Twitter @michaelsantoli

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