If you have held for so long, why in the face of reserve...

If you have held for so long, why in the face of reserve upgrades would you sell now?
Nothing has changed the fundamentals of ESG, they are sitting on massive gas reserves that will be upgraded throughout the year. Sure the long awaited upgrade hasn't been inline with the companies timefrime, and has been punished on uncertainty in the market but ESG is way undervalued IMO.
Nuclear if you have held for a couple of years you are probably sitting on a very healthy return, why not wait another couple of weeks?