And since insurance companies and pension funds buy long-dated bonds to match their long-dated liabilities, everyone has been scrambling to acquire what appears to be a fast-vanishing asset hence the soaring prices and plunging yields.

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Soaring rental prices up more than 10% in the Mission and Noe Valley in the past six months alone are also making buying more competitive, said Vanguard Properties broker Craig Waddle.

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This was not entirely unreasonable copper prices had been soaring for quite some time, and it was not crazy to think that they would have to come down.

ECONOMIST: China's copper crisis | The

Fertilizer stocks, historically a boom-and-bust bunch, have been soaring lately, as investors bet that surging food inflation will continue to push global grain prices and fertilizer demand substantially higher.

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