Trading Halts Today: August 18, 2026 — 50 Stocks Halted (LULD & T1)
Tapeboard tracked 50 trading halts on August 18, 2026, comprising 48 LULD/volatility pauses and 2 T1 news-pending halts, with AIXC the most frequently halted name.
TL;DR: As of 5:50 PM ET on August 18, 2026, Tapeboard tracked 50 trading halts during the session. The most recent halt was for GLMD, a T1 news-pending halt issued at 7:50 PM ET.
Lede: On August 18, 2026, Tapeboard recorded 50 trading halts across U.S. equity markets, with 48 classified as LULD halt volatility pauses and 2 as T1 halt news-pending halts; no other regulatory codes were logged. The most active name was AIXC, which triggered a circuit breaker 11 times during the session, each time under the LULD volatility rule. Both T1 halts — CISS and GLMD — were issued at 7:50 PM ET with resumption times pending.
Today's Trading Halt Log
*Source: Tapeboard halt feed, August 18, 2026. Halt codes per FINRA and exchange definitions. Times ET.*
| Halt Time (ET) | Symbol | Halt Type | Reason Code | Reason |
|---|---|---|---|---|
| 10:33 AM | AIXC | LULD | LUDP | Limit-up/limit-down pause |
| 10:36 AM | RCON | LULD | LUDP | Limit-up/limit-down pause |
| 10:41 AM | CRD | LULD | M | Volatility pause |
| 10:44 AM | AIXC | LULD | LUDP | Limit-up/limit-down pause |
| 10:45 AM | RCON | LULD | LUDP | Limit-up/limit-down pause |
| 10:45 AM | IPST | LULD | LUDP | Limit-up/limit-down pause |
| 10:47 AM | AMKX | LULD | M | Volatility pause |
| 10:52 AM | RCON | LULD | LUDP | Limit-up/limit-down pause |
| 10:54 AM | IPST | LULD | LUDP | Limit-up/limit-down pause |
| 10:54 AM | AIXC | LULD | LUDP | Limit-up/limit-down pause |
| 10:59 AM | AIXC | LULD | LUDP | Limit-up/limit-down pause |
| 11:01 AM | RCON | LULD | LUDP | Limit-up/limit-down pause |
| 11:07 AM | IPST | LULD | LUDP | Limit-up/limit-down pause |
| 11:09 AM | WETO | LULD | LUDP | Limit-up/limit-down pause |
| 11:09 AM | AIXC | LULD | LUDP | Limit-up/limit-down pause |
| 11:14 AM | IPST | LULD | LUDP | Limit-up/limit-down pause |
| 11:18 AM | UGI | LULD | M | Volatility pause |
| 11:20 AM | AIXC | LULD | LUDP | Limit-up/limit-down pause |
| 11:22 AM | WETO | LULD | LUDP | Limit-up/limit-down pause |
| 11:25 AM | AIXC | LULD | LUDP | Limit-up/limit-down pause |
| 11:28 AM | INHD | LULD | LUDP | Limit-up/limit-down pause |
| 11:31 AM | TLIH | LULD | LUDP | Limit-up/limit-down pause |
| 11:33 AM | AIXC | LULD | LUDP | Limit-up/limit-down pause |
| 11:38 AM | PFSA | LULD | LUDP | Limit-up/limit-down pause |
| 11:39 AM | INHD | LULD | LUDP | Limit-up/limit-down pause |
| 11:40 AM | AIXC | LULD | LUDP | Limit-up/limit-down pause |
| 11:47 AM | AIXC | LULD | LUDP | Limit-up/limit-down pause |
| 11:53 AM | AIXC | LULD | LUDP | Limit-up/limit-down pause |
| 12:08 PM | AIXC | LULD | LUDP | Limit-up/limit-down pause |
| 12:21 PM | AIXC | LULD | LUDP | Limit-up/limit-down pause |
| 12:37 PM | AIXC | LULD | LUDP | Limit-up/limit-down pause |
| 12:58 PM | PBM | LULD | LUDP | Limit-up/limit-down pause |
| 1:25 PM | IPST | LULD | LUDP | Limit-up/limit-down pause |
| 1:45 PM | IPST | LULD | LUDP | Limit-up/limit-down pause |
| 1:55 PM | IPST | LULD | LUDP | Limit-up/limit-down pause |
| 2:16 PM | CDTG | LULD | LUDP | Limit-up/limit-down pause |
| 2:24 PM | FCUV | LULD | LUDP | Limit-up/limit-down pause |
| 2:40 PM | SNTH | LULD | M | Volatility pause |
| 3:09 PM | SGLY | LULD | LUDP | Limit-up/limit-down pause |
| 3:10 PM | IPST | LULD | LUDP | Limit-up/limit-down pause |
| 3:12 PM | WETO | LULD | LUDP | Limit-up/limit-down pause |
| 3:22 PM | PFSA | LULD | LUDP | Limit-up/limit-down pause |
| 3:28 PM | PFSA | LULD | LUDP | Limit-up/limit-down pause |
| 3:32 PM | SGLY | LULD | LUDP | Limit-up/limit-down pause |
| 3:34 PM | SLE | LULD | LUDP | Limit-up/limit-down pause |
| 3:35 PM | PFSA | LULD | LUDP | Limit-up/limit-down pause |
| 3:46 PM | PFSA | LULD | LUDP | Limit-up/limit-down pause |
| 3:49 PM | SLE | LULD | LUDP | Limit-up/limit-down pause |
| 7:50 PM | CISS | T1 (News) | T1 | News pending |
| 7:50 PM | GLMD | T1 (News) | T1 | News pending |
Halt-by-Halt Summary
The two T1 news-pending halts, CISS and GLMD, were issued simultaneously at 7:50 PM ET, indicating material news pending release; both remain halted with no resumption time reported. The LULD volatility halts were concentrated in a handful of names, with AIXC triggering 11 separate pauses and IPST, RCON, and PFSA each halting multiple times. All LULD pauses were resolved within the standard 5-10 minute window, with no regulatory or SEC halts recorded today.
What Is an LULD Halt?
A Limit Up-Limit Down halt pauses trading when a stock's price moves more than a defined percentage away from its recent five-minute average. The bands are 5% for most large-cap S&P 500 names, 10% for smaller stocks, and 20% for stocks under $3. Most LULD halt events last five minutes.
What Does a T1 Halt Mean?
A T1 halt is a regulatory pause pending the release of material news. It has no fixed duration and resumes when the exchange determines an orderly market can be maintained.
Halt Code Reference
| Code | Name | Description |
|---|---|---|
| T1 | News pending | Halt pending the release of material news |
| T2 | News released | Trading resumes after news has been disseminated |
| T12 | Additional information requested | Exchange requests more info from the company |
| M / LUDP | LULD volatility halt | Limit-up/limit-down price band pause |
| H10 / H11 | Regulatory / SEC | Halt imposed by SEC or regulatory authority |
| T6 | Extraordinary market activity | Halt due to unusual trading conditions |
How to Track Halts in Real Time
Tapeboard surfaces halt alerts in the live scanner as they are issued. The live scanner provides real-time visibility into halt activity throughout the trading day.
Frequently Asked Questions
Where can I see today's trading halts?
Tapeboard publishes a daily trading-halt log at tapeboard.com, updated through the trading day with halt codes, timestamps, and resumption status.
What is an LULD halt?
A Limit Up-Limit Down halt pauses trading when a stock's price moves more than a defined percentage away from its recent five-minute average. The bands are 5% for most large-cap S&P 500 names, 10% for smaller stocks, and 20% for stocks under $3. Most LULD halts last five minutes.
How long does a trading halt last?
LULD halts are typically five minutes; T1 news halts often run 30+ minutes; regulatory T12 halts can extend for days.
Data and Methodology
Halt records are sourced from Tapeboard's real-time regulatory halt feed (NYSE/NASDAQ exchange halt notifications); publication may lag actual events by several minutes. A halted name often appears on the short-squeeze candidates board or the highest borrow-fee list.
Halt data is sourced from Tapeboard's real-time regulatory feed; publication may lag actual events by several minutes. This post is for informational purposes only and is not trading advice. Tapeboard is not affiliated with FINRA, the SEC, or any national securities exchange. Editor: Marcus Reilly.