By Per Axelson1 and Matthew D. Cain2
Table A1. Class Certification Decisions Where Defendants Challenged Price Impact
The table below lists securities class action cases in which defendants challenged price impact during the class certification stage, and where a judge has issued a decision. The list includes cases in which defendants’ opposition was filed on or after June 21, 2020.
| Case Name | Case Number | Court | Outcome of Class Certification Motion | Date of Class Certification Order |
|---|---|---|---|---|
| City of Warwick Retirement System v. Concho Resources Inc. et al | 4:21-cv-02473 | Texas Southern District Court | granted in part | 4/7/2025 |
| In re Waste Management Securities Litigation | 1:22-cv-04838 | New York Southern District Court | granted | 3/31/2025 |
| Schneider v. Natera, Inc. et al | 1:22-cv-00398 | Texas Western District Court | granted | 3/21/2025 |
| Borteanu v. Nikola Corporation et al | 2:20-cv-01797 | Arizona District Court | granted | 1/6/2025 |
| In re Vaxart, Inc. Securities Litigation | 3:20-cv-05949 | California Northern District Court | granted | 12/17/2024 |
| International Brotherhood of Electrical Workers Local 98 Pension Fund v. Deloitte & Touche LLP et al | 3:19-cv-03304 | South Carolina District Court | granted | 11/12/2024 |
| Shupe v. Rocket Companies, Inc. et al | 1:21-cv-11528 | Michigan Eastern District Court | denied | 9/30/2024 |
| Giuseppe Pampena v. Elon R.Musk | 3:22-cv-05937 | California Northern District Court | granted | 9/27/2024 |
| Pardi v. Tricida, Inc. et al | 4:21-cv-00076 | California Northern District Court | granted | 9/27/2024 |
| SI v. BED BATH & BEYOND CORPORATION et al | 1:22-cv-02541 | District Of Columbia District Court | denied | 9/27/2024 |
| Jaeger v. Zillow Group Inc et al | 2:21-cv-01551 | Washington Western District Court | granted | 8/23/2024 |
| In re Vaxart, Inc. Securities Litigation | 3:20-cv-05949 | California Northern District Court | denied | 7/2/2024 |
| IN RE: KIRKLAND LAKE GOLD LTD. SECURITIES LITIGATION | 1:20-cv-04953 | New York Southern District Court | denied | 3/29/2024 |
| Edwards v. McDermott International, Inc. et al | 4:18-cv-04330 | Texas Southern District Court | granted in part | 3/29/2024 |
| City of Birmingham Relief and Retirement System et al v. Acadia Pharmaceuticals Inc. et al | 3:21-cv-00762 | California Southern District Court | granted | 3/11/2024 |
| Homyk v. ChemoCentryx, Inc. et al | 4:21-cv-03343 | California Northern District Court | granted | 3/6/2024 |
| HALL v. JOHNSON & JOHNSON et al | 3:18-cv-01833 | New Jersey District Court | granted | 12/29/2023 |
| Pompano Beach Police And Firefighters Retirement System v. Olo Inc. et al | 1:22-cv-08228 | New York Southern District Court | granted | 12/1/2023 |
| Xu v. FibroGen, Inc. et al | 3:21-cv-02623 | California Northern District Court | granted in part | 10/3/2023 |
| Delaware County Employees Retirement System v. Cabot Oil & Gas Corporation et al | 4:21-cv-02045 | Texas Southern District Court | granted | 9/27/2023 |
| Ramirez v. Exxon Mobil Corporation et al | 3:16-cv-03111 | Texas Northern District Court | granted in part | 8/21/2023 |
| Gelt Trading v. Co-Diagnostics et al | 2:20-cv-00368 | Utah District Court | granted | 8/18/2023 |
| In re Goldman Sachs Group, Inc. Securities Litigation | 1:10-cv-03461 | Second Circuit | denied | 8/10/2023 |
| Construction Industry and Laborers Joint Pension Trust et al v. Carbonite, Inc. et al | 1:19-cv-11662 | Massachusetts District Court | granted | 7/14/2023 |
| Strougo v. Tivity Health, Inc. et al | 3:20-cv-00165 | Tennessee Middle District Court | granted | 6/7/2023 |
| Boston Retirement System v. Alexion Pharmaceuticals Inc et al | 3:16-cv-02127 | Connecticut District Court | granted | 4/13/2023 |
| Qualcomm Incorporated Securities Litigation v. Qualcomm Incorporated et al | 3:17-cv-00121 | California Southern District Court | granted in part | 3/20/2023 |
| Ferris et al v. Wynn Resorts Limited et al | 2:18-cv-00479 | Nevada District Court | granted | 3/1/2023 |
| Caudle v. AAC Holdings, Inc. et al | 3:19-cv-00407 | Tennessee Middle District Court | granted in part | 2/24/2023 |
| Bond v. Clover Health Investments, Corp. et al | 3:21-cv-00096 | Tennessee Middle District Court | granted | 2/14/2023 |
| St. Clair County Employees' Retirement System v. Acadia Healthcare Company, Inc. et al | 3:18-cv-00988 | Tennessee Middle District Court | granted | 9/30/2022 |
| In Re: Anadarko Petroleum Corporation Securities Litigation | 4:20-cv-00576 | Texas Southern District Court | granted | 9/28/2022 |
| ALLEGHENY COUNTY EMPLOYEES' RETIREMENT SYSTEM v. ENERGY TRANSFER LP et al | 2:20-cv-00200 | Pennsylvania Eastern District Court | granted | 8/23/2022 |
| IN RE EQT CORPORATION SECURITIES LITIGATION | 2:19-cv-00754 | Pennsylvania Western District Court | granted | 8/11/2022 |
| Puddu, et al. v. NYGG (ASIA), LTD., et al. | 1:15-cv-08061 | New York Southern District Court | granted | 6/27/2022 |
| In re Mattel Inc Securities Litigation | 2:19-cv-10860 | California Central District Court | granted | 10/6/2021 |
| Brokop et al v. Farmland Partners Inc. et al | 1:18-cv-02104 | Colorado District Court | granted in part | 9/30/2021 |
| In Re Allergan PLC Securities Litigation | 1:18-cv-12089 | New York Southern District Court | granted | 9/8/2021 |
| Evanston Police Pension Fund v. McKesson Corporation et al | 3:18-cv-06525 | California Northern District Court | granted | 4/8/2021 |
| IN RE CELGENE CORPORATION, INC. SECURITIES LITIGATION | 2:18-cv-04772 | New Jersey District Court | granted | 11/29/2020 |
Note: This table reflects class certification decisions up to June 12, 2025. The defendants’ memoranda of law in the cases In re Goldman Sachs Group and Ramirez v. Exxon Mobil were filed prior to June 21, 2020.
1 Co-Head of Financial and Securities Litigation, Fideres.
2 Senior Fellow, New York University School of Law.