Rakuten Inc. President Hiroshi Mikitani said Thursday that he won't limit his acquisition goal for shares of Tokyo Broadcasting System Inc. to 20 percent.

"I have no plans, but the possibility (of buying more shares in the future) is not zero," Mikitani told a news conference.

Mikitani said he intends to raise Rakuten's stake to above 20 percent from 19.86 percent at present to make the broadcaster an equity-valued affiliate of Rakuten, meaning TBS' earnings would be incorporated into Rakuten's income in proportion to the size of its equity investment.