Social Media pumping, Trump economy / economic policies, sell the rumor/buy the news effect.
I'm afraid we will be in a long trough now due to the Biden administration's anti-business, globalist policies, and the SEC taking a slightly tougher stance on social media pumping. I don't think we will see the OTC turn back around until we get a new administration into Office - and that depends on who that is and if the policies will help or hinder businesses.