Donald Trump’s fledgling media firm has urged market regulators to investigate “suspicious activity” after a London-based hedge fund disclosed a vast bet against its stock.Trump Media & Technology Group, owner of the US president’s Truth Social platform, raised questions over trading by Qube Research & Technologies.Earlier this week, Qube revealed a significant short position in Trump Media via filings with Germany’s federal Gazette Bundesanzeiger. It disclosed a position of almost 6m shares, according to T ...