Couple that come to mind for me are NexTech and ImagineAR. ImagineAR is a nano-cap stock, and we really don't speak on them much simply because of the danger and heightened risk of investing in nano-caps.
These stocks often ride a ton of momentum as we can see with NexTech hitting the $10 level. It has since came back to reality and is still trading at 92 times sales and 32 times book. This company just doesn't have enough fundamental history for me to comment on without a high degree of speculation.
This is a company that has a market cap of nearly $400 million and had next to no revenue, hence the near 100 times sales. A poor quarter could bomb the company's stock price.
There is no doubt the company has potential and could be one of the industry leaders. But, it comes with a high degree of speculation. If you do invest, just invest with money you'd be comfortable losing.