Smart speaker maker Sonos files to go public, set to surpass $1B in revenue this year

According to a recent survey, shopping by voice is expected to grow from $2 billion to $40 billion in the next four years. How far along are smart speakers right now? USA TODAY Sonos' smart speakers are a good fit for audiophiles with a penchant for technology. Speaker company Sonos has filed to go public. The company plans to list shares on the Nasdaq under the ticker symbol "SONO," according to filings. It didn't specify how many shares would be up for sale or list an estimated offering price.