Group 1 - Marex Group PLC shares fell over 8% on August 5, 2025, following allegations from a NINGI Research report that the company concealed nearly $1 billion in off-balance-sheet derivatives exposure through a Luxembourg fund [2] - The report claims that Marex Group used the fund to generate non-cash trading profits and inflated operating cash flow by misclassifying structured note issuance as income [2] - Block & Leviton is investigating potential securities law violations by Marex Group and may file an action to recover losses for affected investors [4][6] Group 2 - Investors who purchased Marex Group common stock and experienced a decline in share value may be eligible to recover losses, regardless of whether they sold their investment [3] - Block & Leviton is recognized as a leading securities class action firm, having recovered billions for defrauded investors and representing many top institutional investors [7]