For commodity trading, the year 2008 ended with a conundrum: Prices plummeted from records set midyear in the fastest drop in five decades, but, abracadabra! Morgan Stanley, Merrill, Citigroup, JPMorgan, Barclays, Deutschebank — the lion’s share of Wall Street’s commodity units — racked up best results ever. And commodities powerhouse Goldman Sachs neared its record, […]