Are there any fees if I transfer all my stocks (custodian) to another brokerage?

If your stocks are in the CDP, you shouldn’t need to transfer if the stockbrokerage is linked to CDP. If moving to custodian from CDP, there are usually transfer fees charged by the stockbrokerage. Better to check direct with the stockbrokerage.

Example is Standard Chartered Online Trading fee schedule: https://av.sc.com/sg/content/docs/sgo_efees_sch...