Andy Mukherjee is a Bloomberg Gadfly columnist covering industrial companies and financial services. He previously was a columnist for Reuters Breakingviews. He has also worked for the Straits Times, ET NOW and Bloomberg News.

David Fickling is a Bloomberg Gadfly columnist covering commodities, as well as industrial and consumer companies. He has been a reporter for Bloomberg News, Dow Jones, the Wall Street Journal, the Financial Times and the Guardian.

What goes down, usually goes up. And when it comes to the Singapore stock market, that tends to happen in just 12 months.

Since 2001, the worst-performing stock on the Straits Times Index in any one year has bounced back in eight of the subsequent 14. An investor who bought the most luckless stock and held it until the next New Year's Eve received an average return of 81.5 percent in those eight years, and lost just 13.6 percent in the periods when the punt didn't work:

Shares That See-Saw
The worst-performing stock in Singapore one year typically rebounds the next
Source: Bloomberg
* Year-to-date

Profitable as it has been, the trend may not work in favor of investors in commodity trader Noble Group, whose 65 percent slump last year was the worst performance of any of the 30 shares on the city-state's benchmark index. With Standard & Poor's joining Moody's in cutting Noble's credit rating to junk, shareholders have suffered a further 20 percent loss so far in January. What's worse, the pessimism in the bond market is making a rebound highly unlikely in the absence of either a major corporate restructuring or a miraculous revival in prices of steel, oil and other raw materials.

Neither possibility is on the horizon. Noble, which spent much of last year fending off attacks on its accounting practices by an anonymous research firm and a short-seller, recently sold the remaining chunk of its agriculture unit to China's Cofco to address concerns about a liquidity crunch. But even that $750 million sale failed to impress. The company's bond due in 2020 dropped to a record low of less than 53 cents to the dollar on Friday. Among similarly priced bonds, Noble's has the highest one-year probability of default, according to a Bloomberg risk model.

Noble Rot
One-year default probability for Asian bonds trading between 50 and 60 cents to dollar
Source: Bloomberg

Chief Executive Officer Yusuf Alireza's view that losing the investment-grade rating wouldn't push the company over the brink is probably right, provided Noble's counterparties don't ask it to post too much more collateral to cover its trades. How much more is too much? S&P says the company's cash sources over the next 12 months may cover its projected cash use by less than 1.5 times, a deterioration from before. Liquidity is ``adequate," but not ``strong," the rating company says.

Those wanting to defend against non-payment over the next five years would have to pay almost $3.1 million right away for credit-default protection on every $10 million of Noble's debt. Lend the same amount to another Asian commodities trader, Mitsui & Co., and you're betting on debt regarded as so safe that the CDS counterparty has to pay you money, to the tune of about $29,000:

Different Planet
Perceived debt risk of Asian commodities traders based on credit-default swaps, basis points
Source: CMA

As Bloomberg News reporters Christopher Langner and David Yong reported on Friday, Noble has now become the riskiest company in Asia for bondholders to hedge against non-payment of debt. Moreover, the cost of protection is higher in the short term than after 12 months, an unusual inversion in the swap curve that suggests investors are betting distress could come sooner rather than later.

With $3.61 billion in debt maturing this year, including 1 billion yuan ($152 million) and 300 million Malaysian ringgit ($69 million) in bonds due by the end of this month, according to data compiled by Bloomberg, the year ahead is going to be quite a tightrope walk. For Noble's equity investors, last year's ugly duckling is unlikely to be 2016's handsome swan.

This column does not necessarily reflect the opinion of Bloomberg LP and its owners.

To contact the authors of this story:
Andy Mukherjee in Singapore at amukherjee@bloomberg.net
David Fickling in Sydney at dfickling@bloomberg.net

To contact the editor responsible for this story:
Matthew Brooker at mbrooker1@bloomberg.net