Why do some stocks become unavailable to trade?
Last updated: 12 August 2026
Stock trading halts are temporary suspensions of trading for a particular security on one or more exchanges. When a stock is halted for trading at the exchange, it cannot be traded on the etoro investment platform. This means that new positions cannot be opened and existing positions cannot be closed until the conditions in the market change.
Some of the most common causes of stocks becoming halted are:
- News Pending: If a company is about to release significant information that could greatly affect its stock price, trading may be halted to prevent individuals with early knowledge of the news from having an unfair trading advantage.
- Order Imbalance: If there is a large imbalance between buy and sell orders in the exchange, the stock might be halted to prevent price volatility and give time for more orders to come in and balance out the demand and supply.
- Volatility Halts: Some exchanges have rules to halt trading when a stock's price moves more than a certain percentage in a given timeframe. This is done to prevent extreme price manipulation and to give the market a moment to catch its breath.
- Regulatory Concerns: Trading is halted if there are concerns about the company's compliance with listing requirements or illegal or fraudulent activity.
- Technical Glitches: A technical issue with an exchange's systems may halt trading until the issue is resolved.
- Merger or Acquisition Announcements: Major corporate actions like mergers or acquisitions can lead to trading halts.
- Bankruptcy or Delisting: If a company declares bankruptcy or is about to be delisted from the exchange, its stock might be halted.
The duration of the halt can vary from a few minutes to several weeks, depending on the reason. Once the reason for the halt is resolved, trading usually resumes.
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