Recap on background HKL announced share buyback programme on 06 Sep 2021 (Link). HKL planned to invest up to USD500M till 31 Dec 2022 and shares purchased under in this programme will be cancelled. HKL share price was USD4.20 on 06 Sep before the announcement was made.
How many % of the USD500M used to date?
Just 20% only



This week is a boring week. 
HKL only did 1 share buyback and the amount spent is one of the smallest (Rank second from last). 
As such, the price range for this week is between USD5.58 ~ USD5.74.

HKL had not made any share buyback price above USD5.60 yet. I believe this chart tell you clearly why only 1 share buyback was made on 10 Nov for this week and in such a small amount :)...