Five years ago, 23andMe was one of the buzziest startups in the world. Now, 23andMe’s stock is worth less than $1. WSJ’s Rolfe Winkler unpacks the startup’s meteoric rise and fall. Further Reading and Watching: - 23andMe’s Fall From $6 Billion to Nearly $0  - How 23AndMe Went From a $6 Billion Valuation to a Penny Stock  - 23andMe Mulls Possible Split, Shares Fall After Disappointing Results  Learn more about your ad choices. Visit megaphone.fm/adchoices