Fathom Holdings Inc. (NASDAQ:FTHM) is one of the best long term penny stocks with huge upside potential. On October 16, Fathom Holdings announced the acquisition of START Real Estate, which is a residential brokerage focused exclusively on serving first-time homebuyers, a large and rapidly growing segment of the US housing market. START Real Estate has developed a successful model for guiding first-time buyers through the homeownership process. The brokerage is headquartered in Colorado with a recent expa ...