Sony, which owns the unit with Michael Jackson’s estate, recently triggered a clause in its contract that allows one partner to buy out the other, the Wall Street Journal reported, citing people familiar with the matter. People in the music industry estimate Sony/ATV’s value around $2 billion, the Journal said, adding that Sony hasn’t put a price tag on its share yet. The Journal reported in December that Sony was considering a sale of the unit, which owns the rights to most of the Beatles’ songs.