Stock Market Glossary
Ad hoc announcement
Prompt publication of price-sensitive information by a listed issuer.
In brief: Prompt publication of price-sensitive information by a listed issuer.
Meaning in practice
An ad hoc announcement informs the market about facts that can materially affect a listed company’s price, such as a profit warning, takeover or major financing decision. It is a starting point for analysis, not a trading signal: investors should assess the size, cause and long-term consequences of the information.
Context for investors and traders
When analysing a company, this term is meaningful only alongside the business model, industry and development across several reporting periods. One-off effects, accounting choices and the corporate cycle can move individual metrics.
How to use this in practice
Use the term first to describe the situation and add verifiable data: time frame, benchmark, costs and liquidity. Only then does it become an assessment that can be connected to an investment objective and risk budget.
What to keep in mind
Avoid false precision. Many market terms describe probabilities or historical patterns; they neither guarantee a return nor replace the review of a specific security.