AD 717 Week 2 - Risk, Return, and the Historical Record Throughout the semester, we are going to learn about the benefits of diversification, which is how we can greatly reduce the uncertainty around our expected returns. To get started, imagine a portfolio that contains at least five assets, either stocks or ETFs. On the second page, you find the mutual sheet that we started to discuss in lecture. We are going to focus on the sections highlighted in blue . For this homework assignment, you are going to study the ten largest holdings of your portfolio. To prepare, go to finance.yahoo.com and enter the tickers for the ten largest holdings in your portfolio. For each of them, click on "Historical Data", indicated on the screenshot below. Select the time period from January 1, 2021, to December 31, 2023. Download the data and open it in Excel. Using the column "Adj. Close", compute the daily returns on day t as " =