"Best mortgage and securitization courses" refer to top-rated educational programs focused on understanding mortgages and their securitization processes. These courses cover essential topics like mortgage-backed securities (MBS), financial instruments, and the process of pooling mortgages to create tradable securities.

Some of the best mortgage and securitization courses include:

1. CFA Institute - Fixed Income and Securitization
   A comprehensive course that covers fixed-income securities, including mortgage-backed securities, their structuring, and the risks involved.

2. Mortgage Bankers Association (MBA) Securitization Courses
   MBA offers various programs on mortgage-backed securities, including the history, structure, and risks of MBS and other real estate securities.

3. Coursera – Financial Markets by Yale University
   This free course provides an introduction to how financial markets work, including the role of mortgages and mortgage-backed securities in global markets.

4. University of California, Irvine – Real Estate Investment and Securitization
   An advanced course focusing on the complexities of real estate investments and how mortgages are securitized to create investment opportunities.

5. Udemy - Mortgage Securitization and Real Estate Finance
   An online course focused on the fundamentals of mortgage securitization, with an emphasis on understanding the process and its importance in financial markets.

These courses are great for professionals in finance, real estate, and investment who want to deepen their knowledge of mortgage markets and securitization techniques.