Sunbelt Securities Inc.’s holdings in Talen Energy were worth $2,294,000 at the end of the most recent quarter. Mirae Asset Global Investments Co. Ltd. boosted its position in shares of Talen Energy by 1,526.3% during the 4th quarter. Talen Energy Stock PerformanceShares of Talen Energy stock opened at $316.19 on Thursday. Talen Energy Corporation has a one year low of $301.45 and a one year high of $451.28. Featured StoriesReceive News & Ratings for Talen Energy Daily - Enter your email address below to receive a concise daily summary of the latest news and analysts' ratings for Talen Energy and related companies with MarketBeat.com's FREE daily email newsletter.