Case Background:
This is a federal securities fraud class action lawsuit on behalf of those who purchased or otherwise acquired Monolithic Power Systems, Inc. (“Monolithic”) (NASDAQ: MPWR) common stock between February 8, 2024 and November 11, 2024, inclusive (the “Class Period”).
Monolithic is a fabless global semiconductor company that designs high-performance, power electronics solutions with a focus on improving energy efficiency and sustainability. The revenue from Monolithic’s Enterprise Data segment, which supplies power solutions for data-center infrastructure and AI computing hardware, comprised over one-third of Monolithic’s total revenue for fiscal year 2024.
The Enterprise Data segment includes the development and sales of power management integrated circuits (“PMICs”), which are specialized chips that manage voltage regulation, current control, and thermal protection in power modules that are used in graphic processing unit (“GPU”) platforms. Nvidia Corp. (“Nvidia”) is the leading supplier of GPUs, and was the most significant user of Monolothic’s Enterprise Data products.
The complaint alleges that, throughout the Class Period, Defendants made false and/or misleading statements and/or failed to disclose that: (1) Monolithic’s voltage regulator modules and PMICs were suffering from significant performance and quality control issues; (2) these defects had, in turn, negatively impacted the performance of certain products offered by Nvidia in which such products were used; (3) Monolithic had failed to adequately address and resolve known issues affecting the performance of the power management solutions Monolithic supplied to Nvidia; (4) Monolithic’ s relationship with Nvidia had been irreparably damaged due to the significant performance and quality control problems affecting the products it supplied to Nvidia and Monolithic’ s failure to adequately address such issues; and (5) as a result of the foregoing, Defendants’ statements about the company’s business, operations, and prospects were materially false and/or misleading and/or lacked a reasonable basis at all relevant times.
Current Status of Case:
On January 13, 2026, Defendants filed a Motion to Dismiss the Amended Complaint. The Motion has been fully briefed and is pending decision before the Court. This action is ongoing.
If you wish to discuss this action or have any questions, please contact Kessler Topaz Meltzer & Check, LLP: Jon Naji, Esq. (484) 270-1453; toll-free at (844) 887-9500; or via e-mail at info@ktmc.com. If you would like additional information about the suit, please click on the link "Submit Your Information" above and fill out the form as promptly as possible.
ABOUT KESSLER TOPAZ MELTZER & CHECK, LLP:
Kessler Topaz Meltzer & Check, LLP (KTMC) is a leading U.S. plaintiff-side law firm focused on securities-fraud class actions and global investor protection. The firm represents individual investors as well as institutions, such as major pension funds, asset managers, and international investors. KTMC has led some of the largest recoveries in securities litigation and has been recognized by peers and the legal media with numerous accolades, including The National Law Journal’s Plaintiff’s Hot List and Trailblazers in Plaintiffs' Law, BTI Consulting Group’s Honor Roll of Most Feared Law Firms, The Legal Intelligencer’s Class Action Firm of the Year, Lawdragon’s Leading Plaintiff Financial Lawyers, and Law360’s Titans of the Plaintiffs Bar. The firm operates globally with offices in Pennsylvania and California. KTMC has recovered over $25 billion for our clients and the classes they represent.