Goldman Sachs Group Inc and BNP Paribas SA recommended investors to look for profit as Sony Corp increased in bond risk. Sony Corp has announced previous consideration of billionaire's Daniel Loeb's proposal to partially spin off the entertainment unit of the company.

According to the data provided by CMA, the cost to protect the debt of Sony Corp has increased to 88 basis points from the previous 228 points since May 13. This was the day before Loeb's spinoff plan was reported. It was also the highest since Feb 1.

Goldman and BNP Paribas recommended selling protection on the company's debt. The intention was to profit from excessive costs. The French bank also blamed hedging activity by equity investors for the increase of the company's credit-default swaps. Tokyo based Sony Corp forecasted a 16% increase in profit for this year from April 1. This was after it had posted its first net income in four years.