Securities Fraud (Rule 10b-5)
Business Associations · Lesson 09
Securities Fraud (Rule 10b-5)
這一課問的是：D 是否構成可依 Rule 10b-5 訴訟之證券詐欺？
ActorActObjectStandardConsequence
Issue · what this lesson is really about
Has D committed securities fraud actionable under Rule 10b-5?
這一課問的是：D 是否構成可依 Rule 10b-5 訴訟之證券詐欺？
Trigger words & phrases that should flag this issue:
misrepresentationscientermaterialityrelianceloss
Core Terminology · 7 must-know
Tap a card to flip and reveal the meaning.
Rule 10b-5
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Broad anti-fraud rule under §10(b) of '34 Act.
Rule 10b-5。
scienter
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Intent to deceive, manipulate, or defraud (or recklessness).
欺詐意圖。
materiality
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Substantial likelihood reasonable investor would consider important.
重大性。
reliance
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Investor relied on misrepresentation/omission.
信賴。
fraud on the market
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Reliance presumed for efficient market.
市場詐欺。
loss causation
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Plaintiff's loss caused by fraud.
損失因果。
safe harbor for forward-looking
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PSLRA: forward-looking statements with cautionary language.
前瞻性陳述安全港。
Rule Sentence · the workhorse
Rule 10b-5 prohibits any person from making material misrepresentations or omissions in connection with the purchase or sale of securities with scienter; private plaintiffs must also show reliance, economic loss, and loss causation.
Sentence Anatomy · 5 roles, 5 colors
Every rule sentence breaks into five visual roles.
Actor 行為人defendant (issuer or trader)被告（發行人或交易人）
Act 行為making misrepresentation or omission作不實陳述或隱瞞
Object 對象investor relying on it信賴之投資人
Standard 法律標準scienter + materiality + reliance + loss欺詐 + 重大 + 信賴 + 損失
Consequence 後果damages / SEC enforcement損害 / SEC 執行
Casebook Snapshot · a real American case
Basic Inc. v. Levinson
Holding. In an open and developed securities market, the price of a company's stock reflects all available material public information about the company; misrepresentations are reflected in market prices, and investors who trade in reliance on the integrity of those prices may presume reliance — the fraud-on-the-market theory.
Why it matters. Basic enabled securities class actions by removing the individual-reliance hurdle through the market-efficiency presumption.
Basic：市場詐欺推定信賴 — 公開市場以價格反映資訊。
Common Mistakes · what trips students
✗ negligence 足以構成 10b-5。
✓ Scienter required — at least recklessness.
須欺詐意圖（至少魯莽）。
✗ fraud on the market 適用所有證券。
✓ Requires efficient market — typically public companies.
須有效率市場 — 通常公司公開上市。
Mini IRAC · build the Application
Issue. May a plaintiff state a 10b-5 claim against a corporate executive who falsely stated in a press release that the company had "never been more profitable," causing the stock price to remain artificially high?
Rule. Rule 10b-5 prohibits material misrepresentations made with scienter in connection with the purchase or sale of securities.
Application (model). The executive made a false statement about profitability; the company was actively traded on an efficient market; investors continued buying at the artificially inflated price. Because Rule 10b-5 requires material misrepresentation with scienter, plus reliance, and the fraud-on-the-market theory presumes reliance in efficient markets, the fact that the misrepresentation was about a material fact (profitability) and the company traded on an efficient market means the plaintiff can establish materiality and reliance (presumed).
Pick the right element for each blank:
g1.
g2.
g3.
Conclusion. Therefore, the plaintiff may state a 10b-5 claim if scienter and loss causation are also adequately pleaded.
MBE Check · multiple choice
D, a corporate executive, makes a forward-looking statement about expected earnings, accompanied by specific cautionary language about risks. The forecast turns out wrong, and investors lose. Liability under 10b-5?
Practice Drill · tap to build the rule
Drop the chips here in correct order:
Tap chips to add → tap chips in the target to remove: