Pattern Energy Group priced its IPO at $22 per share and went public last week. Shares now trade on the NASDAQ under the symbol PEGI. The $22 price point was above its anticipated range of $19 to $21 per share. Backed by The Carlyle Group and Riverstone Holdings, the company owns stakes in eight wind power projects in North and South America. Shares rose almost 6% on their debut to close at $23.27.