The consideration of a sale by Five9 is significant news that directly impacts the company's stock. Such news often leads to speculation and increased trading volume, which can cause stock price fluctuations. Given that acquisition talks tend to drive up the price of the company being acquired, there is a likelihood of a positive short-term impact on FIVN's stock price. However, the confidence score is not at the maximum because the outcome of such considerations is uncertain and the market's reaction can be unpredictable.