On Friday, local time, Warren Buffett's Berkshire Hathaway issued 122 billion yen worth of yen bonds, the company's second such issue this year。It has also sparked growing speculation that Buffett may be putting more money into the Japanese stock market。Berkshire reportedly issued a total value of 122 billion yen (about 8.$100 million) of five bonds with maturities ranging from 3 to 35 years, narrowing spreads compared to previous issues。Currently, Berkshire is one of the largest overseas issuers of yen bonds: 32 of Berkshire's past 40 bond transactions have been denominated in yen。It's worth noting that this is Buffett's second yen bond issue of the year。In April, Berkshire Hathaway issued five issues totaling 164.4 billion yen ($1.1 billion) in yen-denominated bonds.。