It is a very, very good question that can be considered from different angles. Because if you watch the market immediately after the release of strong news, you can see an immediate movement, which may be quite strong and active, but not long-term if the price has managed to reach its level during this time. On the other hand, as practice shows, if the event touches some loud scandal, the price can steadily rise or fall over a certain period of time. This was especially good for American and Chinese stocks during an active period of trade war. Therefore, for each specific asset I would think about this range individually depending on the forecast and the strength of the news.