NextEra Energy (NEE) has rallied the most among its peer stocks this year. The Vanguard Group is the largest institutional investor in the renewables titan. It added net ~0.8 million shares of NEE to its existing holdings in the third quarter. According to its latest filing, Vanguard Group held 41.2 million or 8.6% of NEE’s total outstanding shares on September 30. In the second quarter, Vanguard held 40.4 million total NEE shares.