Major pension fund leader said BOJ buying growing dangerous.
On Friday, Nippon Life Insurance chairman Kunie Okamoto said the Bank of Japan is monopolizing the debt market and risks destabilizing the debt market.
"Additional monetary easing is not desirable," Okamoto told Reuters.
There is considerable speculation the BOJ may ease further in the coming months.
"The BOJ is already buying around 90 percent of bonds in the market. It is not good for this to be sustained," he said.
