I can do the job! The download of stock data would be performed from the web site you define, and speed will be limited only by internet connection and web site response. Could use Quandl apis as long as the content you need is not exclusive of premium paid Quandl.
I'm an engineer with advanced working knowledge and experience in Excel and VBA including interaction between different software (Word, Excel, Powerpoint, Access, MS Project, Autocad, pdf, CorelDraw, etc.), web scraping, Access DB design, management Dashboards, stock and financial worksheets, KPI's, proficient coder in VB.Net, C#, Python, JavaScript (google sheets), VB6.
I value and honor customer service so I will be available for help, small adjustments and bug fixes even long after the project has been paid for and closed.