The news of Stifel maintaining a Buy rating on Zscaler and raising the price target from $135 to $150 is positive for the stock. This indicates that the analyst has a bullish outlook on the company's performance and expects the stock price to rise in the short term. The relevance and importance are high as the news directly pertains to Zscaler and its stock price. The confidence in the analysis is also high as it is based on the expert opinion of a Stifel analyst.