Reverse splits, listing and halts
Trading Halt vs SEC Trading Suspension: Exchange Minutes or 10 Business Days
An exchange trading halt and an SEC trading suspension compared: who orders each, how long they last, what markets they cover, and what happens afterward.
The short version
| Exchange trading halt | SEC trading suspension | |
|---|---|---|
| Who orders it | The listing exchange (or FINRA for OTC securities) | The Securities and Exchange Commission |
| Legal basis | Exchange rules, such as Nasdaq Rule 4120; the LULD Plan for volatility pauses | Section 12(k)(1)(A) of the Securities Exchange Act of 1934 |
| Typical length | Five minutes (LULD) to under an hour (news); a T12 has no set end | Up to 10 business days per order |
| How it ends | The exchange releases the security, usually with a reopening auction | The order expires at a stated date and time |
| Typical reasons | News pending, information requested, volatility | The Commission's view that the public interest and investor protection require it |
| Markets covered | Trading in that listed security | Trading in the security on any market, listed or OTC |
| Where it is announced | Exchange halt feeds (for example Nasdaq Trader) | An order and release on sec.gov |
A halt is an exchange's operating decision about its own listed security; a suspension is a federal order with a fixed end date. Most halts are short and routine. SEC suspensions are rare, run for days, and carry a written reason that the Commission publishes.
The two can overlap. When the SEC suspends a listed stock, the exchange typically halts it as well, and the exchange halt does not automatically end when the SEC order does. The real example below shows exactly that.
What an exchange halt is
A trading halt is called by the market where the stock is listed. Nasdaq's authority sits in its Rule 4120, which lets it halt a Nasdaq-listed security so material news can be disseminated, or while it waits for information it has requested from the issuer. Volatility pauses come from the Limit Up-Limit Down Plan, which pauses a stock for five minutes when its quote hits a price band during regular hours.
Each halt carries a reason code. Nasdaq's code list describes T1 as "Trading is halted pending the release of material news" and T12 as "Trading is halted pending receipt of additional information requested by NASDAQ". The codes, the LULD band arithmetic and the reopening process are covered in trading halts explained, so they are not repeated here.
OTC securities are not exchange-listed, so FINRA plays the halting role. Under FINRA Rule 6440, FINRA may direct its members to stop trading and quoting an OTC equity security in three situations: a foreign regulatory halt, a halt in a related listed security, or an "extraordinary event" that has had a material effect on the market for the security.
What an SEC trading suspension is
Section 12(k)(1)(A) of the Exchange Act lets the Commission, if in its opinion "the public interest and the protection of investors so require", summarily suspend trading in any security (other than an exempted security) for a period not exceeding 10 business days. "Summarily" means without a prior hearing. The SEC's own trading suspensions page describes the same power as up to 10 trading days.
Each suspension is issued as an Exchange Act release, posted on the SEC trading suspensions page with a short order stating the reason. Reasons the Commission has cited include a lack of current and accurate information about the company, questions about the accuracy of public statements, and unusual or potentially manipulative trading. A suspension order is not a finding of wrongdoing; it states what the Commission is concerned about.
A real example: TJGC Group, October 2026
TJGC Group Limited (TJGC) is a British Virgin Islands holding company headquartered in Hong Kong whose ordinary shares are listed on the Nasdaq Capital Market. Two separate stops hit the stock within hours of each other.
The SEC order. Release No. 34-106668, dated October 14, 2026, published on sec.gov, cites Section 12(k) and gives this reason:
because of potential manipulation in the securities of TJGC effectuated through recommendations made to investors by unknown persons via social media to purchase, hold, and/or sell the securities of TJGC, and to send screenshots documenting their transaction, which appear to be designed to artificially inflate the price and trading volume of the securities of TJGC.
The order suspended trading "from 4:00 AM ET on October 15, 2026, through 11:59 PM ET on October 28, 2026."
The exchange halt. Signal8's halts feed, from the Nasdaq Trader halt list, records a Nasdaq T12 halt (additional information requested) on TJGC at 7:50 p.m. ET on October 14, 2026, about eight hours before the suspension began. It is coded T12 rather than H10 (SEC suspension).
On October 22, 2026, the company filed a 6-K headed "Temporary Suspension of Trading". It repeated the order's dates and stated that the company "has no knowledge of and is not connected to any alleged price manipulation activity as described in the order", and that it would cooperate with the SEC and Nasdaq. The SEC order also appears on the company's EDGAR filing list, indexed under the form type STOP ORDER.
What happened after the order expired. As of the November 2, 2026 halt snapshot, five days after the suspension ended, the Nasdaq T12 halt on TJGC was still listed, with no resumption time set. The SEC order had a fixed end; the exchange halt did not.
What happens after a suspension ends
For OTC securities the main consequence is SEC Rule 15c2-11, which governs when a broker-dealer may publish quotations in a quotation medium. Normally a regularly quoted security can keep being quoted under the rule's "piggyback" exception without a broker-dealer re-reviewing the issuer's information. Under paragraph (f)(3)(i)(B)(1), that exception is not available for an issuer that was the subject of a Section 12(k) suspension order until 60 calendar days after the order expires.
In practice, a suspended OTC stock comes back without public quotes until a broker-dealer reviews current information about the issuer and the rule's requirements are met. Trading that happens without published quotations is commonly called the grey market. The rule also requires a broker-dealer to keep a copy of any 12(k) suspension order issued in the prior 12 months when it publishes a quote.
How the three kinds of stop compare in time
| Hypothetical stop | Started | Ends | Length |
|---|---|---|---|
| LULD pause on Company X | 10:14:05 a.m. ET | About 10:19 a.m. ET, with a reopening auction | 5 minutes |
| T1 then T2 news halt on Company Y | 11:00 a.m. ET | 11:35 a.m. ET, after the press release | 35 minutes |
| SEC suspension of Company Z | 4:00 a.m. ET Monday | 11:59 p.m. ET Friday of the following week | 10 business days |
Hypothetical companies and times, for illustration.
A volatility pause ends on its own within minutes; a suspension's end date is printed in the order.
How to check halts and suspensions on Signal8
- The Halted scanner lists securities still halted in the current exchange halt snapshot, with their codes. An H10 or a long-running T12 is the place to look for a possible SEC action.
- A company's Filings tab shows any 6-K or 8-K the issuer filed about a halt or suspension.
- The live SEC filings feed and the news feed are where an issuer's statement usually appears.
- The order itself, with its stated reason and exact times, is on the SEC trading suspensions page linked above.
Live screen
Active trading halts
FAQ
How long can the SEC suspend trading in a stock?
Section 12(k)(1)(A) of the Exchange Act limits a single order to not more than 10 business days. Because weekends do not count, that usually works out to about two calendar weeks; the TJGC order of October 14, 2026 ran from 4:00 a.m. ET on October 15 to 11:59 p.m. ET on October 28. Each order states its own start and end times, so read the order rather than counting from the announcement date.
Can you trade a stock during an SEC trading suspension?
No. While the order is in effect, trading in the security is suspended on every market, including the OTC market, not just the exchange where it is listed. Orders cannot execute. After the order expires, a listed stock may still be halted by its exchange, and an OTC stock may trade only without published quotations until a broker-dealer satisfies SEC Rule 15c2-11 again.
What happens when an SEC trading suspension ends?
The order simply expires at the time it states. For an exchange-listed stock, trading resumes only when the exchange lifts any halt of its own, which may take longer. For an OTC stock, the Rule 15c2-11 piggyback exception is unavailable until 60 calendar days after the order expires, so quotes return only after a broker-dealer reviews current issuer information.
Does an SEC trading suspension mean the company committed fraud?
No. A suspension is a summary order based on the Commission's opinion that the public interest and investor protection require it, issued without a hearing. The order states a concern, such as a lack of current information or potential manipulation by third parties, and is not a finding against the company. Any enforcement action would be a separate proceeding.
See it on DilutionScan
Companies DilutionScan covers, with the instruments read from their SEC filings. Open one to see each instrument and the filing it came from.
- GNSGenius Group Limited8 warrant series, 1 convertible, 1 ATM program, 3 shelf registrations and 2 completed offerings on file
- SMXSMX (Security Matters) Public Limited Company Ordinary Shares10 warrant series, 8 convertibles, 2 equity lines, 4 shelf registrations, 4 S-1 registrations and 2 completed offerings on file
- MLGOMicroAlgo, Inc. Ordinary Shares2 warrant series, 5 convertibles and 2 shelf registrations on file
- HOLOMicroCloud Hologram Inc. Ordinary Shares2 warrant series, 1 convertible, 3 shelf registrations and 2 completed offerings on file
Terms in this guide
- Trading halt
- A trading halt is a temporary stop in trading of a security ordered by its listing exchange or the SEC, for example pending material news, to request information, or after a volatility pause.
- Limit Up-Limit Down (LULD)
- Limit Up-Limit Down (LULD) is the US market-wide rule that keeps each stock trading within price bands around a recent average and pauses trading for five minutes if a band is not restored.
- Form 8-K
- A Form 8-K is the SEC current report a public company files, generally within four business days, to disclose material events such as agreements, offerings, executive changes and listing notices.
Sources
- SEC accession 9999999997-26-001635 TJGC Group Limited EDGAR record of SEC order of suspension of trading, action date 2026-10-15 (Release No. 34-106668)
- SEC accession 0001185185-26-004902 TJGC Group Limited 6-K, filed 2026-10-22, Temporary Suspension of Trading: suspension from 4:00 AM ET October 15, 2026 to 11:59 PM ET October 28, 2026
Related guides
- Trading Halts Explained: Halt Codes and LULD PausesWhat trading halt codes T1, T2, T12, H10, LUDP and M mean, how Limit Up-Limit Down price bands trigger pauses, and how a halted stock reopens for trading.
- Form 25 vs Form 15: Delisting vs DeregistrationForm 25 vs Form 15 explained: how delisting removes a stock from an exchange, how deregistration ends SEC reporting, who files each and the timelines.
- Form 6-K, 20-F and 40-F: Foreign Issuer FilingsForm 6-K, 20-F and 40-F explained: why foreign private issuers file 6-Ks instead of 8-Ks, when a 20-F is due, and how to read a 6-K with no item numbers.
- Nasdaq Deficiency Notices and the $1 Bid Price RuleNasdaq deficiency notices explained: the $1 minimum bid price rule and its 180-day periods, equity and late-filing standards, and the 2025 reverse split limits.
- The Reverse Split Dilution Cycle ExplainedHow reverse splits, resale registrations and convertible financings can repeat as a dilution cycle, with a typical timeline and a worked two-loop share count.
- Reverse Stock Split Explained: How It WorksHow a reverse stock split works, its stages and filings, fractional shares, ADS ratio changes, bid-price rules and Nasdaq's 250-to-1 cap.
Check any ticker for dilution
DilutionScan reads each covered company's SEC filings and lists its warrants, convertibles, ATM programs, shelves and S-1s on one page, with a dilution rating and cash runway.
This guide is from the Signal8 Academy, the research team behind DilutionScan. Educational content only. DilutionScan and Signal8 are not broker-dealers or investment advisers, and nothing here is a recommendation to buy or sell any security.