The Stocks to Real Estate ratio divides the S&P 500 index by the Case-Shiller Home Price Index. Just like Market Cap to GDP, it has an interesting historical track record and clearly shows the stock market bubbles of 1929 and 1999.
The oil to gold ratio indicates the number of ounces of gold it takes to buy a barrel of oil. Similar to the copper gold ratio, the oil gold ratio is an indicator of the health of the global economy.
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