From my experience, usually from a trading perspective, it's more probable for a profitable trade when you buy the stock before a bullish news is published publicly as usually that's when people start to take profits and price falls. Thus the phrase "Buy the rumour, sell the news" But if you're a long term investor, news which shows good fundamental structure for the stock valuation is a good sign for you to continue "hodling" aka diamond hands 💎🙌🏻