Dan Loeb’s Third Point has built a sizable position in the debt of embattled California utility PG&E Corp., according to a person familiar with the matter. The New York-based hedge fund listed PG&E as its fifth-largest investment in its monthly letter to investors, according to a copy of a letter reviewed by Bloomberg. The size of the position, which wasn’t disclosed, is entirely in the company’s debt, the person said, asking not to be identified because the details are private.