Whereas big swings in oil prices usually reflect supply shocks, and precious metals are often seen as a safe haven in times of crisis, The Economist's commodity price index (which excludes oil and precious metals) has traditionally been a fairly good leading indicator of turning-points in global industrial output.

ECONOMIST: The prices of most raw materials have been surging

Though the AAII Sentiment Indicator can be viewed as a contrarian signal, I would caution against relying on any one indicator as a sign that the market is at a turning point.

FORBES: Bearish Sentiment Surges

Page-turning is sometimes done very quickly, sometimes met with five seconds of a spinning progress indicator.

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