Yes, left 2 week.
But you see one thing, the mutual date is 31 Dec 2020.
On 24 Topglov is ex-date for dividend at almost 2% based on yesterday price.
I don’t believe there is a way to press down the mother share price, 2% is so attractive.
What they can do right now, is to collect as much as ticket of c-81 now in order to lesser their lose.
Maker will create a chaos by oversold c-81 and let it free fall first, let panic seller sell their share and collect at bottom.

you can refer to the announcement on how they calculated that. it s kind of weighted average. I never understand their calculation formula but from what I read, they would take the weighted average price for the 5 market day. your date range is correct.