Is there a minimum sum for deposit?

https://blackwellglobal.com/    

Blackwell Global is owned and operated by Blackwell Global Investments (UK) Limited, a limited liability company authorized and regulated by the Securities Commission of the Bahamas (Bahamas SCB) with registration No. SIA-F216 and the UK's Financial Conduct Authority (FCA) with reference No.687576. 

As for the question you asked, we recommend that you ask the official customer services directly for a more accurate answer. Fore more details on this broker you can check our full Blackwell Global review.