Capital Gains Tax on foreign stocks

Dear HMRC, I am holding a BNO Visa for the UK starting from 01 March 2024, and I entered the UK on 29 June 2024. I have some stocks in my Hong Kong bank account. If I sell these stocks within 180 days, will they be exempt from Capital Gains Tax? Also, could you please clarify how the 180 days are counted? Thank you.

Hi,
No as they will be sold when you are in the UK - Shares and Capital Gains Tax (Self Assessment helpsheet HS284).  
For residence, please refer to RDR3: Statutory Residence Test (SRT)
Thank you.