Regulation SHO
Regulation SHO is the SEC short-sale rule framework covering order marking, price-test, locate, and close-out requirements for equity short sales.
Regulation SHO is the SEC rule framework for U.S. equity short sales. It covers how sell orders are marked, when a short-sale price-test circuit breaker applies, when broker-dealers need borrow-availability evidence, and how certain fails to deliver must be closed out.
The rule matters because short-sale problems are often misunderstood. Regulation SHO does not ban short selling, does not prove market manipulation by itself, and does not make every fail to deliver illegal. It creates specific broker-dealer, trading-center, clearing, and recordkeeping controls that must be checked against the actual order, locate, settlement, and close-out evidence. This page is educational and is not legal, compliance, or trading advice.
Key Takeaways
- Regulation SHO applies to short sales of equity securities and related short-sale controls.
- Rule 200 covers sell-order marking: long, short, or short exempt.
- Rule 201 is the short-sale price-test circuit breaker triggered by a 10% or greater intraday decline from the prior day’s closing price.
- Rule 203 covers locate and delivery requirements before a broker-dealer accepts or effects many short-sale orders.
- Rule 204 covers close-out requirements when participants of registered clearing agencies have fail-to-deliver positions.
- A Regulation SHO issue should be reviewed with order records, locate evidence, execution reports, clearing data, and close-out logs, not social-media claims or price action alone.
What Regulation SHO Covers
| Rule area | Plain-English role | Evidence to review |
|---|---|---|
| Rule 200 marking | Requires sell orders to be marked long, short, or short exempt | Order ticket, account position, marking logic, exception support |
| Rule 201 price test | Restricts certain short-sale prices after a covered security falls 10% or more from the prior close | Prior close, trigger record, national best bid, order price, short-exempt marking |
| Rule 203 locate | Requires borrow, bona fide borrow arrangement, or reasonable grounds to believe shares can be borrowed and delivered | Locate record, borrow source, timestamp, quantity, exception code |
| Rule 204 close-out | Requires close-out action for certain fails to deliver by rule-specific deadlines | Clearing record, fail quantity, close-out purchase or borrow, books and records |
| Threshold-security rules | Flag persistent fails that meet size and duration criteria | SRO threshold list, SEC fails-to-deliver data, security identifier, settlement date |
Simple Example
Assume a trader sends a short-sale order in a U.S. equity security. Before the order is effected, the broker-dealer must determine the correct order marking and, unless an exception applies, have a documented basis to believe the shares can be borrowed and delivered when due.
If the stock has triggered Rule 201 after a 10% intraday decline, the order also needs to satisfy the short-sale price-test restriction or a supported short-exempt exception. After execution, settlement still matters. If the participant has a fail-to-deliver position, Rule 204 close-out timing and evidence become part of the review.
Regulation SHO vs Related Concepts
| Concept | What it is | What it is not |
|---|---|---|
| Short Sale | The transaction selling borrowed securities | A complete rule analysis by itself |
| Naked Short Selling | Short-sale activity without borrow or delivery support in time | Proven by price declines alone |
| Fail to deliver | Delivery failure at settlement | Always caused by abusive short selling |
| Short Interest | Reported open short positions | The same as fails-to-deliver or short-sale volume |
| Short-Sale Rule | Price-test restriction discussion, usually Rule 201 today | The entire Regulation SHO framework |
| Threshold Securities | Securities with persistent fails meeting threshold-list criteria | Automatic proof of manipulation |
How To Evaluate A Regulation SHO Question
Start with the specific control being tested.
| Question | Why it matters |
|---|---|
| What was the trade type? | Long, short, and short-exempt marking drive different evidence needs |
| Was there locate support? | A short-sale order needs documented borrow-availability support unless an exception fits |
| Did Rule 201 apply? | A triggered price-test restriction changes permissible execution and display |
| Did the trade settle? | Settlement facts determine whether close-out review is needed |
| Was the security on a threshold list? | Persistent fails can require additional close-out and monitoring attention |
| Which rule source and date apply? | SEC rules, staff FAQs, SRO procedures, and settlement cycles can change |
Common Mistakes
- Treating Regulation SHO as a complete ban on short selling.
- Treating every fail to deliver as proof of illegal naked short selling.
- Confusing short-sale volume, short interest, fails-to-deliver data, and threshold-list status.
- Ignoring the difference between a locate, an actual borrow, a settlement fail, and a close-out.
- Assuming a market-maker label automatically resolves the rule analysis.
- Citing Rule 201 without checking whether the circuit breaker was actually triggered and still in effect.
- Relying on stale summaries instead of the current rule text, SEC guidance, broker records, and SRO data.
Public Source Checks
- SEC: Key Points About Regulation SHO
- SEC: Responses to Frequently Asked Questions Concerning Regulation SHO
- SEC: Rule 201 of Regulation SHO FAQ
- SEC: Short Sale Price Test Restrictions compliance guide
- FINRA: Regulation SHO - Bona Fide Market Making and Close-Out Requirements
These public sources provide rule and staff-guidance context. They do not determine whether a specific order, locate, market-maker exception, fail-to-deliver event, close-out action, or enforcement conclusion is correct.
Related Terms
- Short Sale: The transaction that sells borrowed securities.
- Short Selling: Broader practice of using short sales for exposure, hedging, liquidity, or strategy.
- Locates: Documented pre-trade borrow-availability evidence.
- Naked Short Selling: Short-sale activity without sufficient borrow or delivery support.
- Short-Sale Rule: Current price-test circuit breaker and historical uptick-rule context.
- Threshold Securities: Securities with persistent fails meeting Regulation SHO threshold-list criteria.