FINS5512 Chap.4 Equity Markets II: Equity and Investors
Equity Markets II: Equity and Investors
This chapter takes the investor's view. It separates systematic from diversifiable firm-specific risk, distinguishes active from passive and direct from indirect investing, and tests market-efficiency claims by their information set. It then handles mechanical share-price adjustments by preserving total holder value for splits and bonus issues while adding subscription cash for rights issues.
Excluded portfolio and beta calculations remain outside the method. Mark whether a price change is mechanical, informational or driven by both channels.
Organise this topic around three independent questions. The first is exposure: systematic forces affect many securities together, whereas firm-specific shocks can be reduced through diversification.
The current boundary requires interpretation rather than portfolio, beta or risk calculations. The second is investment approach: active and passive, direct and indirect, domestic and international, and income and growth describe different dimensions, so one label cannot substitute for another. The third is information: weak, semi-strong and strong efficiency differ by the information set assumed to be reflected in price.
Identify whether the evidence concerns trading history, public information or private information before naming the form. Mechanical corporate actions need a separate before-and-after bridge. A pure split or bonus issue changes share count and price per share while preserving the holder total value before other news. A dividend transfers value out of the company.
A rights issue changes share count and adds subscription cash, so its theoretical ex-rights price is a weighted average rather than a pure division. If a market announcement accompanies the action, calculate the mechanical benchmark first and treat any further price movement as an information or expectation effect.
For a market-capitalisation index, larger constituents have greater influence, which can make the index less representative of a small equal investment across companies. Keep that interpretation separate from excluded portfolio calculations.
In exam prose, state the investor consequence: diversification limits, access and fees, dilution, participation rights or the reliability of a trading strategy under the relevant efficiency hypothesis. Close with the specific information set or value bridge that supports the conclusion.
What this chapter covers
- 01
Systematic and unsystematic risk
- 02
Active and passive investing
- 03
Direct and indirect share exposure
- 04
Weak, semi-strong and strong efficiency
- 05
Behavioural finance as an alternative lens
- 06
Splits, bonus issues and rights mechanics
Worked example · free
Reconcile a split and rights issue
- +1The split creates 480 shares at a mechanical price of $9.
- +1Total value remains 480 × $9 = $4,320 before other market movement.
- +1For the rights issue, combine four old shares worth $36 with $7 new cash.
- +1Divide $43 by five shares to obtain a theoretical ex-rights price of $8.60.
Key terms
- Systematic risk
- Market-wide exposure that diversification across firms does not remove.
- Unsystematic risk
- Firm-specific exposure that can be reduced through diversification.
- Ex-rights price
- The theoretical share price after old value and subscription cash are spread across the enlarged share count.
Equity Markets II: Equity and Investors FAQ
Why does diversification not remove all risk?
Adding holdings can reduce company-specific shocks because gains and losses may offset across firms. Market-wide forces affect many holdings together, so systematic risk remains even in a broad portfolio. The current topic emphasises this distinction without requiring portfolio-risk calculations.
How do the efficiency forms differ?
Weak-form efficiency concerns information in past prices and trading. Semi-strong efficiency includes all public information. Strong-form efficiency extends to all information. Identify the information set being tested before naming the form.
Why is a rights issue different from a split?
A split divides the same holder and company value across more shares, so the mechanical total is unchanged. A rights issue also brings subscription cash into the company, making the ex-rights price a weighted average rather than a pure division.
Exam move
Revise this topic in two columns. The first column is investor choice: systematic versus unsystematic risk, active versus passive, direct versus indirect, domestic versus international, and income versus growth. The second column is market information: past trading data, public information and all information. Practise identifying the axis before selecting a term.
For share adjustments, draw a before-and-after table with share count, price, holder value and any cash entering or leaving the company. Splits and bonus issues conserve total value mechanically; dividends remove cash; rights issues add subscription cash. Avoid portfolio return, portfolio risk and beta calculations because the current checklist places them outside scope.
When interpreting an efficiency scenario, describe how quickly and fully the relevant information reaches price instead of relying on a slogan. End each answer with the investor consequence, such as dilution, participation, diversification or the limits of an information-based trading strategy.
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