REG SHO Overview
The Securities and Exchange Commission (SEC) has adopted amendments to Regulation SHO Most recently, the SEC introduced a short sale-related circuit breaker that, when triggered, will impose a restriction on prices at which securities may be sold short. View the final rule.
Circuit Breaker List
The SEC adopted amendments to Regulation SHO with a compliance date of February 28, 2011. Among the rule changes, the SEC introduced Rule 201 (Alternative Uptick Rule), a short sale-related circuit breaker that when triggered, will impose a restriction on prices at which securities may be sold short. The SEC also issued guidance for broker-dealers wishing to mark certain qualifying orders "short exempt." For more details, refer to the final rule.
NASDAQ maintained the list for the Reg SHO price test change until October 4, 2007. Effective October 5, 2007, broker-dealers are no longer permitted to mark sales “short exempt”; instead all short sales must be marked "short".
- Historical NASDAQ FTP Availability
- NASDAQ Historical Changes since May 2, 2005
- Data Fields & Definitions
- Boston Stock Exchange Historical Files
- Philadelphia Stock Exchange Historical Files
Threshold Security List
Effective January 3, 2005, new short sale rules were implemented, including a uniform “locate” requirement for short sales in all equity securities and additional requirements for broker-dealers trading securities in which a substantial amount of failures to deliver have occurred (Regulation SHO Threshold Securities). Please refer to Head Trader Alerts #2004-108, #2004-155, #2004-166 and #2004-168.
The SEC amended Regulation SHO to eliminate the “grandfather provision” effective October 15, 2007. Please refer to Regulatory Alert #2007-086 for complete details.
As announced in General News Item #2005-005, Wednesday, April 13, 2005, was the last day that NASDAQ posted a separate addendum to the Threshold List in order to identify the additional OTC securities subject to Regulation SHO.
View the Threshold List
- Call the SEC's office of Investor Education and Assistance at +1 800 SEC 0330.
- File complaints at http://www.sec.gov/ complaint.shtml.
- Send specific enforcement-related information to email@example.com.
For NASDAQ Market Participants and FINRA Members:
- Please visit the FINRA Website for comprehensive contact information.
- Contact your T.S. U.S. Transaction Services Sales Representative at +1 800 846 0477.
- Questions regarding NASDAQ-listed stocks should be directed to your NASDAQ Market Intelligence Desk Director.
- Questions regarding an OTCBB or Pink Sheet stock, should be emailed to firstname.lastname@example.org.