https://www.theverge.com/2018/7/6/17539986/sonos-ipo-filing-public-offering-announced-smart-speaker > Sonos officially filed for an initial public offering today, marking a major step as the audio company tries to stand out in a world of smart speakers. The company, which was founded in 2002, has grown into a dominant force in the speaker industry, with a name that is all but synonymous with the concept of multi-room audio setups. Sonos will trade on the Nasdaq Global Select Market under the symbol “SONO.” > The filing is also a good look at some of the numbers behind Sonos’ business. As of March 31st, the company reported having sold 19 million products in roughly 6.9 million households around the world, a statistic that speaks to one of Sonos’ biggest strengths. At an average of nearly 3 speakers per customer, the figures are confirmation that people who buy one Sonos device are likely to continue to build out their setup by buying more. Sonos also touts the fact that its customers tend to listen to “80 percent more music” after buying their first Sonos product.