A large divergence between two fundamentally-correlated market prices is important because such a divergence usually will be closed via a big move in one or both prices. However, divergences sometimes build for an inconveniently long time before they start to matter.

The gold/commodity ratio (the US$ gold price divided by the GSCI Spot Commodity Index) and the T-Bond are strongly correlated over the long term. They also tend to be well correlated over shorter timeframes, but significant short-term divergences sometimes occur. One such divergence has been developing since the beginning of this year, with the T-Bond making a sequence of higher highs while the gold/commodity ratio stays below its late-December high. Note that even the recent surge to a new 5-year high by the US$ gold price was not enough to push the gold/GNX ratio above its late-December high.

The current divergence and previous similar divergences (higher highs for the T-Bond in parallel with lower highs for the gold/commodity ratio) are illustrated by the following chart. The previous similar divergences led to large declines in the T-Bond price and I can think of no reason to expect that it will be different this time.

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