(1) NNVC company has been moving at a very slow pace
(2) Due to (1) investors have little interest in the stock. There are no investors who want to seriously go long or seriously go short. If there was much more interest we would see the stock moving much more rapidly.
I personally have taken a stock position in anticipation that application to FDA to conduct phase 1 tests will get the stock to move upward since more investors will become interested. I still have little assurance that NNVC has no toxicity in humans. So I will be taking a serious position only after it NNVC clears phase 1. I doubt the stock would have moved a lot by then.