** Shares of currency risk management firm Argentex AGFX.L fall as much as 14.54% to 2.35p

** Among top losers across all London stocks

** Finds that significant issues in internal systems were missed by risk management and stress testing procedures

** Says there were systemic issues with new products, with risks not fully understood nor adequately disclosed

** Many of the identified issues have or are being rectified - AGFX

** Company working with the Financial Conduct Authority to strengthen its internal systems ahead of its takeover by IFX Payments

** As of Tuesday's close, stock down 90.5% in 2025 so far

(Reporting by Raechel Thankam Job)

((RaechelThankam.Job@thomsonreuters.com))