Last example that springs to mind in VTX. VTXO traded around 10% under it's true value towards expiry. Generally once the difference widens much more than that then they start getting snapped up fairly quickly as it allows a cheaper entry to the heads. Now given POKO is only just sitting in the money, and exercising them is a (relatively) costly affair it'll probably trade at more of a discount but pok only needs to go up another 20% or so in the next few days and that gap will close significantly. They actually offer quite a lot of upside as a short term trade, just don't buy more than you can exercise.