OCC Trading, page-1431

Very few analysts, funds etc would be researching this company given many have market cap mandates that are above $100m (so pointless looking at anything less than that). Often means that companies like this trade at valuations far too low until there's a major catalyst (even if it that catalyst is easily predicted like revenue growth - the lack of coverage means very few of the larger market movers have the chance to get in before)

That's why you tend to see "rerates" rather than anticipatory buying in advance. A big growth figure could certainly be the necessary catalyst...

maybe there's a fund or two out there with no market cap mandates that have realised how undervalued this is and are buying in anticipation (hence the volumes and price movement)