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The ratio of Oil Stocks to current Crude Oil Prices has been a good indicator
of trends in the broader stock market. Since June this correlation has been
breaking down with implications for both markets.
In a recent article on current
oil prices we discussed why oil stocks do not necessarily move in lock-step
with the price of oil. In short, Oil Stocks are significant components of
large stock indexes and as a result tend to move with the big averages regardless
of the underlying oil price.
However, as soon as the price of Oil begins to head higher, economists become
very nervous and fears of an inflationary shock ala 1973 resurface. Recent
history has shown that a near 8 fold increase in the price of oil has not resulted
in an outbreak of inflation, a recession or stock market collapse. In fact
the stock market has surged higher during this same period which begs the question,
is rising Oil prices good for the economy?
The answer as we explained in the above article is that if higher oil prices
are accompanied by higher oil stock prices the overall effect is positive for
the economy and the broader stock market - the global growth theme. If
the price of Oil is outperforming Oil Stocks this is perceived as inflationary
and bad.
Hence we like to watch how this ratio performs to give us a clue of what to
expect from the broader market.

Chart 1 Oil Stock: Current Crude Oil Prices ratio; Dow Industrials (blue)
By and large the oil stock: oil price ratio has been closely aligned with
the Dow Jones Industrial average.
Current interpretation: The ratio made a double top in May 2007 (top
green line) providing a warning that the stock market rally may soon be ending.
Yet the stock market rallied into June causing us to question the usefulness
of this ratio as a leading indicator.
The ratio continued dropping in June and July and then broke below its February
lows (lower green line). Alongside this action the stock market has turned
down ferociously.
Where to now?
I note that Oil prices have been rallying for nearly 7 weeks so they should
be due for a rest. But the break below February lows is a sign that further
out performance by the price of Crude versus Oil stocks is on the cards. The
implication is that further stock market weakness lies ahead.
Take cover!
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