HIIQ was already undervalued, with a forward P/E of 4.65, but it just got even moreso today as analysts bumped its earnings forecast by roughly 20%. This is a low-volume stock, so the market hasn't yet noticed or reacted to the upgrade except for a few options traders. The main problem with HIIQ is that health insurance stocks face a lot of political risk going into an election year when the Democratic candidates may be inclined to try to kill this industry altogether.
Comment:
On looking more closely, it looks like this upgrade affects only 2019, not 2020, and thus is probably a one-off, not reflecting real improvement in the company's fundamentals.