PayPal Holdings Inc (NASDAQ:PYPL) stock spiked on Wednesday afternoon after a new social-media post from President Donald Trump appeared to defuse fresh transatlantic trade fears. Here’s what investors need to know.PayPal Holdings shares are advancing steadily. Why is PYPL stock advancing?Trump Drops Tariff ThreatIn the post, Trump said a "very productive meeting" with NATO Secretary General Mark Rutte had produced a framework for a Greenland and Arctic security deal and, crucially, that he would "not be im ...