Lead‑Plaintiff Deadline Tuesday in Synopsys Securities Suit

Plaintiffs target statements about AI-driven shifts they say preceded a September stock plunge.

Overview

Investors have until December 30, 2025 to ask the court to be appointed lead plaintiff in the Synopsys case.
The putative class period runs from December 4, 2024 through September 9, 2025, according to multiple notices.
Complaints allege Synopsys emphasized AI customers that required extra customization, eroding Design IP economics and undermining certain road map and resource decisions.
On September 9, 2025 the company reported Design IP revenue of $425.9 million, down 7.7% year over year, net income down about 43%, and the stock fell nearly 36% the next day.
The litigation is pending in the Northern District of California as Kim v. Synopsys, Inc., with firms including DJS Law Group, The Gross Law Firm, and Bleichmar Fonti & Auld soliciting shareholders; no class has been certified.