I am currently holding an $GOOGL (-0.13%) Open End Long warrant. The theory was that the Google IO event will announce something big and since GOOGL is already very undervalued, there could be a strong price increase.

I am up 20%.

After deducting taxes and costs, I should end up with a profit of around €50, which I'm quite happy with with a €300 stake.

With such price movements, I'm never sure when I should get out though. Knock outs can basically be held for much longer & since Google is undervalued, I believe that it can go on like this for a while.

Does anyone have experience in this area or an opinion?