This is complete write up of your portfolio formation in a Word file, with calculations copied and pasted in it from your Excel file.1. Select the stocks of three publicly traded companies from different industries. State the criteria for selecting those securities.2. Retrieve monthly data on adjusted closing prices of your securities from Yahoo Finance for the past 10 years and calculate the monthly rate of return of the stocks for every month.3. Calculate the mean, variance, and standard deviation of the stocks’ monthly returns.4. Calculate the correlation coefficient between every possible pair of stocks’ returns.5. Decide what percentage of your money (weights) you want to invest in each stock and state the criteria you used to select those weights.6. Now calculate your portfolio’s mean monthly return, variance, and standard deviation.7. Assuming your portfolio return follows a normal distribution, calculate the chance that your portfolio loses 10% of its value during any month?8. Assuming you have invested $100,000 in your portfolio, what is value at risk (VaR) of your portfolio at any particular month at 99% confidence level?9. Now randomly change your portfolio’s weights 100 times (note total weights should always be 100%), for each weight combination calculate the mean and standard deviation of your portfolio, and then draw the efficient frontier.10. For each item mentioned above explain your rationale and cite peer-reviewed and/or seminal sources.

Using the material available online and/or from other sources, devise a plan for setting up a state-of-the-art airport security system. You must discuss the following points as a minimum:The security force - selection, organization, training.Airport lay-out - suggest a design which maximizes security management efficiency and passenger flow while minimizing discomfort and delay to air travelers. You may use diagrams to supplement your work.Describe the system for screening passengers step-by-step as a process describing each piece of equipment used and its function. You may diagram this system if you wish.Describe how you would integrate systems for maximum efficiency.Discuss security management of freight air carriers in brief.Your paper should be oriented towards a primary commercial service airport in the United States. This is a best-case scenario so consider the budget funded. Discuss passenger screening in terms of concentric ring theory (defense-in-depth). In other words, passenger screening must consist of at least three overlapping layers. In terms of system integration, discuss the integration of passenger screening system design with other security components used at the airport, i.e., closed circuit television systems (CCTV), barriers, access to the airside operations area, etc.TECHNICAL GUIDANCE:paper should be at a minimum 15 pages for the body of your work (the Title Page and References page will be additional pages).Type in Times New Roman, 12 point and double space. Please provide a separate heading for each question (these are sections).follow the APA 6 Style as the sole citation and reference style used in written work submitted as part of coursework

Assignment Instructions Analyze Business Case 40-3, "Fiduciary Duties of Officers," located below. Prepare a professional-caliber brief on the case. Based on the case information provided: State the facts of the case and the key issues.Cite the code or statute provisions applicable to the case.Determine whether the duties owed by officers and directors to a corporation and its shareholders have been breached in this instance, and explain your reasoning.Express your main points, arguments, concepts, and information coherently and logically. To support your brief: Identify the duties that corporate directors and officers owe to a corporation and its shareholders. Cite relevant law. Additional Requirements Cover page: Include your name, the assignment number, and the assignment or case title.Length: 1–2 double-spaced pages, not including the cover page.Font and font size: Times New Roman, 12-point.APA formatting: Format resources and citations according to current APA guidelines.Cases:40–3. Fiduciary Duty of Officers. Designer Surfaces, Inc., supplied countertops to homeowners who shopped at stores such as Lowe’s and Costco. The homeowners paid the store, which then contracted with Designer to fabricate and install the countertops. Designer bought materials from Ari- zona Tile, LLC, on an open account. Designer’s only known corporate officers were Howard Berger and John McCarthy. Designer became insolvent and could not pay Arizona Tile for all the materials it had purchased, including materials for which Designer had already received payment from the retail stores. Arizona Tile sued Designer and won a default judg- ment, but the company had no funds. Arizona Tile then sued Berger and McCarthy personally for diverting company funds that Designer had received in trust for payment to Arizona Tile. Arizona Tile argued that the use of the funds for other purposes was a breach of fiduciary duty. Berger and McCarthy argued that corporate law imposed neither a fiduciary duty on corporate officers nor personal liability for breach of a duty to suppliers of materials. Which argument is more credible, and why? [Arizona Tile, LLC v. Berger, 223 Ariz. 491, 224 P.3d 988 (Ariz.App. 2010)]