# Finance Assignment | Homework For You

1. You will be assigned twenty (20) stocks from the current S&P 500 index. You must use these 20 stocks (or, more precisely, the ticker symbols) to download data from yahoo.com. Go to yahoo.com, then Finance, then type in your ticker symbol. Next choose Historical Prices from the tabs on the left. Tag “Monthly” then choose the appropriate dates (to be determined below). Click Get Prices, scroll to the bottom of the page and download to spreadsheet (it is actually saved as a ‘.csv’ file, but it will open okay in Excel). The last month of return data should be December 2018. Be sure to use end-of-month data! Yahoo might print a beginning of month date in the monthly output, but it should be end of month. To check this, look at the daily data and verify that the last day of the month is used in the monthly spreadsheet (it should be if you wait until after the sample period to collect your data).

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2. You must determine how exactly yahoo.com calculates historical beta, then replicate their calculations. This requires the use of regression software (or functions in Excel, if you know how to do that). Note, you must calculate returns first. Is the data sorted correctly – in time order? If not, you must sort your stock prices and market prices so that the oldest prices are first, then calculate returns. Answer the following questions:
a. How, exactly, does yahoo.com calculate their beta? How many months of return data do they use? How many months of price data do you need? How do you know that you and Yahoo used the same data period? (Please note that the Yahoo Finance Help page no longer defines terms like beta.  Yahoo’s Help Page used to say:  “The Beta used is Beta of Equity. Beta is the monthly price change of a particular company relative to the monthly price change of the S&P500. The time period for Beta is 3 years (36 months of returns) when available.”)
b. Should you use closing price or adjusted price when calculating returns? Why?
c. What is the market proxy? What ticker did you use for your market proxy?
3. After calculating returns for your twenty stocks and the market, you must calculate beta for each of your twenty stocks. Create a Table showing the following: Ticker, Company Name, yahoo beta, calculated beta, intercept and r-square from your regressions.
4. Do your regression results match yahoo.com results? Why or why not? Get Finance homework help today

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