A further $100 billion dollars of developing-nation debt faces downgrade to junk this year as Moody’s Investors Service and S&P Global Ratings tally up the effects of the oil shock, according to analysts at Barclays Plc. Bonds demoted to speculative grade, so-called fallen angels, are seen as a buying opportunity because they tend to recover their value within two months of being downgraded. Click here for more.

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