Law Firms Court Synopsys Investors Ahead of Dec. 30 Lead-Plantiff Deadline

The case centers on claims that an AI-focused strategy masked weakness in the Design IP segment, revealed by September 2025 results with a steep share-price decline.

Overview

Investor notices from DJS Law Group, The Schall Law Firm, Robbins LLP, and Kahn Swick & Foti urge shareholders who bought between December 4, 2024 and September 9, 2025 to contact them before December 30, 2025 to seek lead-plaintiff status.
The complaint alleges the company failed to disclose that AI customers required added customization that deteriorated the economics of its Design IP business and that related road map and resource decisions were unlikely to deliver intended results.
Filings cite September 9, 2025 results showing revenue of $1.740 billion versus guidance of $1.755–$1.785 billion and net income of $242.5 million, down 43% year over year, with Design IP revenue at $426.6 million, down 7.7% and guidance implying at least a 5% full-year decline.
Law firm notices report the stock fell $216.59, or 35.8%, to close at $387.78 on September 10, 2025 after the disclosure.
The putative class action, asserting Exchange Act §§10(b) and 20(a) and Rule 10b-5 claims, is pending in the Northern District of California under case number 25-cv-09410, and the class has not been certified.