Cramer says newly public Sonos reminds him of Fitbit: 'I'm not going to make the same mistake twice' By: CNBC.com News August 08, 2018 at 18:22 PM EDT Jim Cramer has his doubts about Sonos' IPO after being burned by the similarly structured Fitbit. Read More >> Related Stocks: Alphabet-A Apple Fitbit Inc Renaissance IPO ETF