Xcel is one of the largest private companies in the US.
It has been a leader in the energy sector since 2005 and is owned by the Chinese state-owned Chinese Solar Group.
Xcel has more than $1.3 trillion in assets under management.
Its stock is up 20% year-to-date.
It’s up 23% in value, while the S&P 500 index is up 9%.
Xcel’s shares have been rising over the past few months, driven in part by the company’s announcement of its $2.8 billion purchase of a 51% stake in Tesla, which was announced in January.
Tesla, a major player in the electric vehicle market, has seen its stock rise more than 400% over the last year.
The stock has been the subject of speculation over whether Tesla will move into the energy business in the future.
Xellos Energy stocks are up more than 70% year to date.
Its stock is down 7%.