Securities Class Action Filings Rise Sharply in First Half of 2026
Securities class action filings surged by 30% to 121 cases during the first half of 2026 compared to the previous six months, according to a report from Cornerstone Research and Stanford Law School. The increase was largely driven by litigation involving artificial intelligence-related claims against technology companies. Fifteen AI-related lawsuits were filed in H1 2026, putting such cases on track to nearly double their 2025 total. The overall alleged investor losses also rose significantly. The Disclosure Dollar Loss (DDL) index increased by 77%, with AI-related filings accounting for 73% of the DDL value in H1 2026, totaling $385 billion out of a $529 billion total. Maximum Dollar Loss (MDL), which measures peak-to-end market cap changes during class periods, nearly tripled compared to historical averages. The report also noted shifts toward litigation against non-U.S. issuers and the decline in cryptocurrency-related filings since 2019.
Topics: AI class action lawsuits Cornerstone Research litigation technology sector