Key TakeawaysPalo Alto Networks shares gained ground in premarket trading Tuesday after the cybersecurity provider released earnings that surpassed expectations and issued an outlook at the high end of Wall Street forecasts.Buyers snapped up a temporary dip below a multi-month trendline and the 200-day moving average earlier this month, with the price continuing to show upward momentum leading into the company’s quarterly results.Investors should watch key overhead chart levels in Palo Alto shares at $345, ...