Strategy #0000000065 · Governance quality and shareholder rights
Corporate governance and shareholder-rights factor
Separate the governance sort from long/short return assumptions; lower G-index means fewer antitakeover provisions.
Governance factors sort firms on shareholder rights, takeover defenses, boards or activist ownership. The historical G-index study by Gompers, Ishii and Metrick found higher returns for stronger-rights firms in its sample; later evidence highlights variation by period, index and governance regime.
Governance indices capture selected provisions; correlation, firm quality and endogenous selection do not prove causality.
Three ways in
Understand the story. Then inspect the risk.
Start with a familiar situation, check the payoff, then test how the numbers change.
The idea · in two minutes
What assumed return spread separates firms with stronger shareholder rights from weaker-rights firms?
Marco sets the strong-rights basket G-index to 5 and the weak-rights basket to 18. The index counts takeover provisions, so a lower value indicates stronger shareholder rights.
He separately enters assumed returns for both baskets and trading costs. The simulator reports the rights-score gap and long/short return spread; it does not map the score into a return forecast.
Governance and firm value interact, and corporate traits influence governance choices. A historical spread does not prove that a particular provision caused excess returns; activism, liquidity and voting costs are omitted.
- Strong-rights basket G-indexEnter G-index values and assumed returns for stronger/weaker shareholder-rights baskets to inspect the score gap and net spread.
- Weak-rights basket G-indexScores and returns are instructional assumptions; no governance data, holdings, proxy events or historical backtest are loaded.
- Assumed return spread after costsIllustrative expiry outcome.
Illustrative research examples only. They are not live signals or a recommendation.
The mechanics · payoff and exposure
G_{strong}<G_{weak},\quad R_{LS}=R_{strong}-R_{weak}-Cost
G proxies antitakeover provisions; R_strong and R_weak are scenario returns for stronger/weaker-rights baskets. G-index is not a complete governance score.
Greeks: the directional intuition
- 指數有效性
- Measures sensitivity to implied volatility.
- 內生性
- Measures sensitivity to implied volatility.
- 事件成本
- Measures sensitivity to implied volatility.
G_{strong}<G_{weak},\quad R_{LS}=R_{strong}-R_{weak}-Cost
Practical context · published observations
Corporate governance and shareholder-rights factor: read the record with its caveats.
The chart uses the published figures or explicitly labelled study inputs below. A historical index or model replay is not the same as an investor’s realised account return.
指數值和組合報酬均為教學假設，不載入治理資料、持倉、投票事件或歷史回測。 Source ↗ · Methodology ↗
Change assumptions and inspect the scenario
Inputs illustrate the strategy mechanics; they are not live quotes, forecasts or investment advice.
Variants · same family, different risk levers
Related methods use different signals and assumptions.
Compare the rule, exposure and implementation limits.
| Related strategy | Relationship | What changes | New cost or risk |
|---|---|---|---|
| E-index | Managerial entrenchment | Focuses on six entrenchment provisions. | Still a simplified provisions count. |
| Takeover vulnerability | Institutional-ownership interaction | Combines governance and institutional ownership. | Ownership and dual-class filters create selection. |
| Shareholder activism | 13D / governance event | Studies activist involvement or governance events. | Event selection, disclosure and outcomes are uncertain. |
Scores and returns are instructional assumptions; no governance data, holdings, proxy events or historical backtest are loaded.
Read beyond the summary
References
Primary sources and research used to describe the strategy and its limits.