why such low sp and low volume?

I dont quite understand the low sp and low volume traded on this stock (yes I'm a newbie). Fundamentally this stock seems pretty good to me (great product, large market, on verge of commercialization of contact lens for day wear, huge possibilities for other industries).
The management seem pretty good, with very little for shareholders to be disappointed about in the last 12 months...other than the sp of course.

Am I missing something. I have had a small position in Biosignal since october.