Prior to completing your journal, read in your textbook Chapter 8, Portfolio Selection and Asset Allocation, complete the Building an Optimal Portfolio discussion forum and guided response, and review all posts in the discussion forum.

In your journal, be sure to address the following:

• Summarize the Markowitz model.
• Your observations on the different portfolio weights for the global minimum-variance portfolio of different students in the discussion forum, based on different securities.
• The strengths and weaknesses of the Markowitz model.