Unit 3: Investing Fundamentals

Answer: C — Correct answer C is accurate because stock index funds generally offer higher potential returns over the long term but come with higher risk due to their exposure to the stock market. This aligns with Tom's willingness to take on higher risk for higher returns and his long-term investment horizon. Options A and B are incorrect because they misstate the typical risk and return profiles of high-yield bond funds and stock index funds. Option D is incorrect because it inaccurately suggests that high-yield bond funds and stock index funds have similar risk and return profiles.

Answer: C — Growth stocks are typically characterized by their high potential for long-term growth and are often associated with companies in innovative industries such as technology. Income stocks (A) are focused on providing regular income to investors, defensive stocks (B) are less volatile and tend to perform well during economic downturns, and value stocks (D) are undervalued by the market and may not have the same growth potential as growth stocks. Therefore, growth stock (C) is the most suitable option for Tom.

Answer: D — The correct answer is D. This option achieves the specific goal of reducing overall portfolio risk by 15% while preserving growth potential through a strategic reallocation. By moving 10% from large-cap stocks (lower risk equities) and 5% from small-cap stocks (higher risk equities) into bonds, the investor reduces equity exposure from 80% to 75% and increases bond exposure from 20% to 35%. This creates a meaningful risk reduction weighted toward eliminating higher-risk positions while maintaining meaningful equity exposure. Option A increases bonds to 35% but uses proportional reductions across both stock types, which is less efficient because it reduces the higher-risk small-cap position by a smaller dollar amount than necessary. Option B eliminates small-cap stocks but overcompensates by increasing large-cap stocks to 80%, which actually maintains the same equity/bond ratio (80/20) and provides negligible risk reduction. Option C is inefficient because moving 15% to cash creates excess liquidity and abandons growth potential unnecessarily; cash typically provides minimal returns and addresses risk through avoidance rather than strategic diversification. Option D represents true portfolio rebalancing that addresses risk through asset class adjustment rather than elimination of growth-oriented investments.

Answer: A — The correct answer is A because it demonstrates understanding of risk-adjusted return analysis using the Sharpe Ratio. The Sharpe Ratio is calculated as (Return - Risk-Free Rate) / Standard Deviation. For Portfolio X: (8% - 2%) / 5% = 1.2. For Portfolio Y: (9% - 2%) / 12% = 0.58. Portfolio X provides better compensation (1.2 units of excess return) per unit of risk taken compared to Portfolio Y (0.58 units). This is a critical concept in investing fundamentals: higher absolute returns don't necessarily mean better investments if they come with disproportionately higher risk. Answer B is incorrect because it ignores risk entirely and only considers absolute return, which violates modern portfolio theory. Answer C is incorrect because the Sharpe Ratio validity doesn't depend on time horizon in this context; volatility measures risk regardless of investment duration. Answer D is incorrect because it uses flawed logic—comparing raw return differences without considering the risk differential is not a valid investment analysis method. This question requires students to apply the Sharpe Ratio formula and understand why risk-adjusted returns matter more than raw returns when comparing investments.

Answer: A — The correct answer is A. This question tests the investor's understanding of how time horizon, risk tolerance, and return expectations interact in portfolio construction. With a 20-year investment horizon and stable income with no near-term obligations, this investor can afford to take on higher volatility in exchange for the historically higher returns of equities. The longer timeframe allows recovery from market downturns, making the higher-returning portfolio (80% stocks) more appropriate. Option B is incorrect because while bonds provide stability, they sacrifice significant long-term growth potential over 20 years, and stability is less critical with such a long horizon. Option C is wrong because it incorrectly assumes stocks always outperform regardless of circumstances—this ignores market timing and individual situations. Option D is incorrect because it misrepresents diversification principles; appropriate asset allocation depends on individual circumstances (time horizon, goals, risk tolerance), not arbitrary percentage rules. This question requires students to synthesize multiple concepts: time horizon's effect on risk capacity, the risk-return tradeoff, and appropriate portfolio construction principles.