Snowflake came out with a bang in its public debut, raising $3.4 billion in the largest software IPO ever. The data warehousing company opened at $245/share after pricing its IPO at $120/share. Its stock continued climbing in Wednesday trading, closing at $253.93, valuing the company at more than $60 billion. The IPO is a windfall for the company’s investors, including Madrona Venture Group. The Seattle-based firm invested in 2017 when the company’s valuation was around $500 million, said Madrona Managing Director S. “Soma” Somasegar.