1. The Strict Liability: The SEC doesn't care *why* you traded. If the buy and sell happened within 180 days, you are guilty. 2. The Calculation: The court uses the "Lowest-In, Highest-Out" formula. They find the lowest price you paid and the highest price you sold at, and they demand the differe

Short-Swing Profit Rule: The '6-Month' Lockdown

Q: The "Elon Musk" Twitter Scandal (2022)

The definitive study of short-swing liability: * The Act: When Musk was buying Twitter, he delayed reporting his 5% stake. * The Risk: If he had sold any shares within 6 months of becoming a "10% owner," he would have been forced to give hundreds of millions of dollars back to the company. *

Q: Why it Matters: The "Integrity" Gap

The Short-Swing rule prevents "Pump and Dumps." * Without this rule, a CEO could go on TV, "Pump" the stock price, sell their shares, and then let the company crash the next month. * By forcing a 6-month wait, the law ensures that the CEO's "Personal Wealth" is linked to the "Long-Term Health"

TL;DR: Under Section 16(b) of the Securities Exchange Act, a corporate insider (CEO or Director) is forbidden from making a "Quick Profit" on their own company's stock. If you buy and sell (or sell and buy) within 6 months, the profit belongs to the Company, not you. It is the "Anti-Speculation" rule of the elite, proving that a leader is an "Investor," not a "Day Trader."

Introduction: The "Inside" Advantage

A CEO knows everything that is happening inside the building. If they see a "Bad Week" coming, they could sell today and buy back tomorrow for 10% cheaper. The Short-Swing Rule makes this illegal, even if you didn't have "Secret News."

How the Rule Works

The Strict Liability: The SEC doesn't care why you traded. If the buy and sell happened within 180 days, you are guilty.
The Calculation: The court uses the "Lowest-In, Highest-Out" formula. They find the lowest price you paid and the highest price you sold at, and they demand the difference.
The "Bounty Hunters": Professional lawyers spend their lives watching CEO filings. If they find a 16(b) violation, they sue the CEO on behalf of the company and take a 20% cut of the profit.

The "Elon Musk" Twitter Scandal (2022)

The definitive study of short-swing liability:

The Act: When Musk was buying Twitter, he delayed reporting his 5% stake.
The Risk: If he had sold any shares within 6 months of becoming a "10% owner," he would have been forced to give hundreds of millions of dollars back to the company.
The Lesson: This is why billionaires rarely sell their stock—the legal "Trap" for short-term trading is too dangerous.

Why it Matters: The "Integrity" Gap

The Short-Swing rule prevents "Pump and Dumps."

Without this rule, a CEO could go on TV, "Pump" the stock price, sell their shares, and then let the company crash the next month.
By forcing a 6-month wait, the law ensures that the CEO's "Personal Wealth" is linked to the "Long-Term Health" of the business.

Conclusion

The Short-Swing Profit Rule is the "Ball and Chain" of the boardroom. It proves that "Authority" comes with "Restrictions." By preventing leaders from gambling on their own reputations, the law successfully manufactures a "Stable" market for the public. Ultimately, it proves that in the end, the most expensive "Trade" is the one you made 5 months after you bought it. 引导语：短线利润规则（Short-Swing Profit Rule）是董事会的“球与链（枷锁）”。它证明了“权威”伴随着“限制”。通过防止领导者拿自己的名誉当赌注，法律成功为公众制造了一个“稳定”的市场。最终它证明，到头来最昂贵的“交易”，是那个你在买入 5 个月后就做出的交易。