Why Does Trading in a Single Stock Get Halted, and When Does It Resume?

One minute a stock is moving fast, the next your order screen says "halted". Knowing which kind of halt it is tells you roughly how long you'll wait and what happens to your orders.

What people on X are asking

In April 2025, after a week of steep market falls, a market data company asked: you may notice sudden halts of individual stocks; what safeguard is responsible and how does it work?, answering limit up-limit down. In November 2025 a trader described LULD as preventing individual names from trading outside a dynamic band around a 5-minute average price, and asked why crypto venues don't use it. And in February 2026 a small-cap investor asked a company why the stock fell 25% on huge volume and then suddenly went into a trading halt with a study update. These are different halts with different rules.

The fact-checked answer

1. LULD pauses (price moved too fast). The LULD Plan, approved by the SEC, prevents trades in US-listed stocks (NMS stocks) outside price bands set above and below the stock's average price over the preceding five minutes. If the best bid or offer reaches the band and the market does not come back within 15 seconds, the primary listing exchange declares a five-minute trading pause. The pause may be extended for another five minutes; then trading resumes. If the pause starts in the last 10 minutes of the session, the exchange doesn't reopen and runs its closing procedure instead. Investor.gov calls LULD the single-stock circuit breaker.

LULD price bands (from the LULD Plan)

Bands are measured from the 5-minute average reference price, not the previous close. Rights and warrants are excluded. Check luldplan.com for the current parameters. Tap a column header to sort.

Stock type and previous close	Band during 9:30 a.m.–3:35 p.m.	Last 25 minutes
Tier 1 (S&P 500, Russell 1000, some ETPs), above $3.00	5%	Doubled (10%)
Tier 2 (all other NMS stocks), above $3.00	10%	10% (not doubled)
Any tier, $0.75 to $3.00	20%	Doubled (40%)
Any tier, below $0.75	Lesser of $0.15 or 75%	Doubled

2. Exchange halts for news. The listing exchange can stop trading so that everyone gets material news at the same time. On Nasdaq, code T1 means halted pending the release of material news; T2 means the news has begun dissemination; T12 means more information was requested from the company. Results of trials, mergers or studies are typical triggers. The stock reopens after the news is out, often through an opening auction, so the first price can be far from the last trade. In the X example above, a drop on heavy volume before the halt is the kind of pattern that leads investors to ask about leaks; the halt itself is a fairness measure, not evidence of one.

3. SEC trading suspensions. The SEC says federal securities law lets it suspend trading in any stock for up to 10 trading days when that is required in the public interest and to protect investors, for example over doubts about the accuracy of a company's information or delinquent filings. A suspension applies on all trading venues. It is rarer and more serious than an exchange halt, and some suspended stocks never return to a major exchange.

Market-wide halts are different. If the S&P 500 falls 7%, 13% or 20% from the previous close, market-wide circuit breakers stop all trading; see what a stock market circuit breaker is. LULD works one stock at a time. That is also why a stock can move 30% in a day without being halted, as one trader asked about a meme stock that was not halted on a big day in May 2025: if it moves in steps, the five-minute reference price moves with it and the bands move too.

UXS decision diagram

My stock is halted. What kind of halt is it?

Text version of the diagram

1. Did the price move 5–20% within a few minutes just before the halt? If yes: Probably an LULD pause; expect about five minutes, sometimes ten
2. Does the halt code say news pending (T1) or information requested (T12)? If yes: News halt: it reopens after the news is out, often with a gap
3. Is it an SEC trading suspension? If yes: Up to 10 trading days on all venues; the stock may not return to its exchange
4. Is the whole market halted? If yes: Market-wide circuit breaker after a 7%, 13% or 20% S&P 500 fall
5. Otherwise: Check your open orders: they may still be live when trading resumes

Diagram drawn by UXS. A simplified decision aid for education, not a recommendation.

What happens to your orders. During a pause, the stock's listing exchange runs a reopening auction. Limit orders you placed may remain active and can execute in that auction at the reopening price; market orders may fill far from where you expected. A stop order that triggers on reopening becomes a market order at a gapped price; see stop order vs stop-limit and market vs limit orders. Some brokers cancel certain orders during halts; check their policy.

Small caps halt more. Tier 2 stocks under $3 have wider bands, but they also move more, so penny stocks get paused often; see are penny stocks worth it. The LULD tables cover regular hours (9:30 a.m. to 4 p.m.), so prices in extended hours can move without these pauses; see the risks of premarket and after-hours trading. Nasdaq publishes a live list of current halts with their codes.

Decision helper

Common mistakes

• Leaving market orders working through a halt.
• Assuming a halt means the price will reverse.
• Treating an SEC suspension like a five-minute pause.
• Not checking the halt code.

FAQ

Why do stocks get halted?

Usually a Limit Up-Limit Down pause after a fast move, a news-pending halt, or an SEC suspension.

How long does a trading halt last?

LULD pauses last five minutes and can be extended five more; news halts last until the news is out.

What triggers a LULD halt?

The price reaching its band (5% or 10% for most stocks above $3) for 15 seconds without coming back.

Can I sell during a halt?

No trades occur; your orders may execute when trading resumes.

What does halt code T1 mean on Nasdaq?

Halted pending the release of material news.

How long can the SEC suspend a stock?

Up to 10 trading days.