Yoo Jae-suk, arguably the biggest television celebrity in Korea, has become the third-largest shareholder of his entertainment agency, Antenna Music, according to news reports Monday. He reportedly bought a 20.7 percent stake in the unlisted firm from its largest shareholder, Kakao Entertainment, for 3 billion won ($2.3 million) on Jun. 9. In a separate deal, Antenna CEO Yoo Hee-yeol has acquired a 21.37 percent stak.