Cornerstone Research, in cooperation with the Stanford Law School Securities Class Action Clearinghouse (SCAC), publishes a series of reports on securities class actions filed after the passage of the Private Securities Litigation Reform Act of 1995 (PSLRA or Reform Act).
Our reports are widely cited, providing comprehensive statistics on historical and recent filings activity, characteristics, and trends.
SCAC is cosponsored by Cornerstone Research and Stanford Law School. It includes regularly updated information on post–PSLRA federal securities class actions. This data provides the research sample for our semiannual report.
Years of data
Filing records
Filings reports released each year
Tracking of artificial intelligence–related filings began while the number of cryptocurrency-related filings declined.
The number of securities class action lawsuits increased slightly in 2023, reversing the trend of decline over the last three consecutive years.
The number of securities class action filings increased in the first half of 2023.
The report found that plaintiffs filed 208 securities class action lawsuits in federal and state courts in 2022.
Plaintiffs filed 110 new securities class action lawsuits in federal and state courts in the first half of 2022.
The report found plaintiffs filed far fewer securities class action complaints in 2021 than in the previous year.
This report shows that overall filing activity dropped considerably in the first half of 2021, falling to 112 filings from 150 filings in the second half of 2020.
This report found that declines in state court filings and filings related to M&A contributed to a 22% decrease in the number of securities class actions filed in 2020.
If you have any questions about this research or are looking for a previous version of this report, contact us for assistance.
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