Stephen Mandel's Lone Pine Capital has liquidated its entire position in Talen Energy Corp. (TLN), according to a recent quarterly disclosure filed with the SEC. The filing, which reflects trades made during the second quarter of 2026, shows the firm sold all 1.82 million of its shares. Based on the reported value, the sale was worth approximately $580.34 million and represented about 4.63% of the hedge fund's portfolio.

Investors should be aware that 13F filings are submitted to the SEC 45 days after the end of a quarter, so these trades occurred between March 31 and June 30, 2026. This exit comes at a time when Talen Energy has reported positive news, including raising its 2026 guidance in early August. No specific reasoning for the sale was publicly disclosed by Mandel or Lone Pine Capital.