“AI-related cases represented a modest share of total filings but an outsized share of alleged investor losses in the first half of 2026,” said Joseph Grundfest, a professor at Stanford Law School and principal investigator at Stanford’s Securities Class Action Clearinghouse, which worked with Cornerstone on its class action filings report.

That imbalance shows how “a small number of high-impact matters” can influence securities litigation trends, Grundfest said in a statement accompanying the report.