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Minimizing Risk… Maximizing Portfolio Profit. Team 76 – Manalapan High School Jonathan Newman Jesse Beyroutey Dorothea Tsang Andy Liu David Trethewey. Goal. Maximize net profit by investing $30,000 in technology stocks
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Minimizing Risk… Maximizing Portfolio Profit Team 76 – Manalapan High School Jonathan Newman Jesse Beyroutey Dorothea Tsang Andy Liu David Trethewey
Goal • Maximize net profit by investing $30,000 in technology stocks • Find the combination of stocks with the minimum risk required to achieve a certain profit
Our Approach • Qualitative – Value Investment Theory • Fundamental Analysis • Investor’s discretion • Quantitative – Markowitz Model • Historical stock performance (to determine risk) • Predicted stock price
Assumptions • Investors are rational • The market is generally rising • In addition to stocks we can invest in treasury bills (which have no risk) • No transaction cost or commission • The forward price-to-earnings ratio is relatively accurate over one year
Value Investment Theory • Used current fundamental indicators to evaluate company performance • Free Cash Flow (FCF) • Return on Investment Capital (ROIC) • Price to Earnings Ratio (P/E ratio) • Price to Sales Ratio (P/S ratio) • Beta (β)
Modern Portfolio Theory (MPT) • Reduces the risk of investing by diversifying stock allocations • Models stock price variance as “risk” • Includes treasury bills as a risk-free alternative
MPT Ramifications • To make greater returns, more risk must be assumed • Investment in any stock must be justified against the no-risk T-bill • A model can be designed to allocate stocks for minimum risk
The Magic of Covariance • Find covariance of each pair of stocks with historical price data • Two relationships: • Negative covariance • Positive covariance • Adding a risky stock to our portfolio can decrease the portfolio risk
Method Behind the Model • Goal: find the efficient frontier to find a portfolio with a desired return • Quadratic programming optimization model • Constraints • An expected rate of return • A limit on invested capital ($30,000)
Inputs to Model • Projected stock price after one year • Assumed the forward P/E ratio was relatively accurate • Used one-year earnings predictions to find stock price • Covariance matrix • Based on historical stock prices • Stocks with negative covariance reduce overall risk
Testing the Model • For small returns, most of the money is invested in no risk treasury bills • If bigger returns are expected, the portfolio should take on riskier investments instead of T-bills • For impossibly high returns, no solution is found by the program
Testing the Model • We first tried a small return of 3.33% ($1000) • All the money was invested in treasury bills as expected • Moderate return of 10% ($3000) • Diverse portfolio with low volatility • Mostly T-bills • Higher returns of 33% and 100% • T-bills nearly eliminated
Limitations • Uses normal distribution to model risk • Positive deviation from expected return is viewed the same as negative deviation • Negative deviations should be considered more risky for purposes of the model • Use of only downside semi-variance could correct this
Conclusion • In order to mitigate risks, counter-intuitive actions must be taken • For every increase in profit required, a proportional increase in risk is assumed • Value investing strategy is best for picking stocks; the Markowitz model optimizes the distribution among good stocks