Which Auditors Public Companies Use in 2024
Introduction
Independent registered public accounting firms play a crucial role in providing audit services to public companies, ensuring the accuracy of financial statements and compliance with regulatory requirements. This analysis examines which accounting firms serve as auditors for public companies, based on disclosures in 2024 10-K annual reports.
The data reveals the dominance of the Big Four accounting firms (Deloitte, EY, KPMG, PwC) and provides insights into the competitive landscape of public company audit services, including regional and specialized firms serving smaller public companies.
Ticker | Auditor | Details |
---|---|---|
A | PricewaterhouseCoopers LLP | Agilent Technologies, Inc. is audited by PricewaterhouseCoopers LLP as their independent registered public accounting firm. The firm audited the company's consolidated financial statements and internal control over financial reporting as of October 31, 2024, and stated that the consolidated financial statements present fairly, in all material respects, the financial position, results of operations, and cash flows in conformity with generally accepted accounting principles in the United States, and concluded that the company maintained effective internal control over financial reporting. |
AA | PricewaterhouseCoopers LLP | Alcoa Corporation is audited by PricewaterhouseCoopers LLP as their independent registered public accounting firm. The firm audited the company's financial statements and internal control over financial reporting as of December 31, 2023, and concluded that the consolidated financial statements present fairly and internal control over financial reporting was effective. |
AAL | KPMG LLP | American Airlines Group Inc. is audited by KPMG LLP as their independent registered public accounting firm. KPMG LLP provided an unqualified opinion on the consolidated financial statements and an unqualified opinion on the effectiveness of internal control over financial reporting for the fiscal year ended December 31, 2023. |
AAON | Grant Thornton LLP | AAON is audited by Grant Thornton LLP as their independent registered public accounting firm. The firm issued their reports dated February 28, 2024, with respect to AAON's consolidated financial statements and internal control over financial reporting for the year ended December 31, 2023. Grant Thornton LLP provided an unqualified opinion on both the financial statements and the effectiveness of internal control over financial reporting. |
AAPL | Ernst & Young LLP | Apple Inc. is audited by Ernst & Young LLP as their independent registered public accounting firm for the fiscal year 2024. The firm expressed an unqualified opinion on Apple's consolidated financial statements. |
ABBV | Ernst & Young LLP | AbbVie is audited by Ernst & Young LLP as their independent registered public accounting firm. Ernst & Young LLP provided an unqualified audit opinion on both the consolidated financial statements and the effectiveness of AbbVie's internal control over financial reporting for the fiscal year ended December 31, 2023. |
ABNB | PricewaterhouseCoopers LLP | Airbnb is audited by PricewaterhouseCoopers LLP as their independent registered public accounting firm. In their audit opinion, they stated that the consolidated financial statements present fairly, in all material respects, the financial position as of December 31, 2023 and 2022, and the results of operations and cash flows for the three years ended December 31, 2023. They also opined that Airbnb maintained effective internal control over financial reporting as of December 31, 2023. |
ABT | Ernst & Young LLP | Abbott Laboratories is audited by Ernst & Young LLP as their independent registered public accounting firm. Ernst & Young LLP audited the consolidated financial statements of Abbott Laboratories and subsidiaries for the fiscal year ended December 31, 2023, and expressed an unqualified opinion on the effectiveness of Abbott's internal control over financial reporting as of December 31, 2023. |
ACGL | PricewaterhouseCoopers LLP | Arch Capital Group Ltd. is audited by PricewaterhouseCoopers LLP as their independent registered public accounting firm. In their audit opinion, they stated that the consolidated financial statements present fairly, in all material respects, the financial position of the company as of December 31, 2023, and 2022, and the results of its operations and its cash flows for each of the three years in the period ended December 31, 2023, in conformity with accounting principles generally accepted in the United States of America. They also opined that the company maintained, in all material respects, effective internal control over financial reporting as of December 31, 2023. |
ACHR | PricewaterhouseCoopers LLP | Archer Aviation Inc. is audited by PricewaterhouseCoopers LLP as their independent registered public accounting firm. The firm has served as Archer's auditor since 2020. In their audit opinion for the fiscal year ended December 31, 2023, PricewaterhouseCoopers LLP stated that the consolidated financial statements present fairly, in all material respects, the financial position of the company and its subsidiaries. They also concluded that Archer maintained effective internal control over financial reporting as of December 31, 2023. |
ACI | Deloitte & Touche LLP | Albertsons Companies, Inc. is audited by Deloitte & Touche LLP as their independent registered public accounting firm. Deloitte & Touche LLP expressed an unqualified opinion on the consolidated financial statements for the fiscal year ended February 24, 2024, and also provided an unqualified opinion on the effectiveness of the company's internal control over financial reporting as of February 24, 2024. |
ACM | Ernst & Young LLP | AECOM is audited by Ernst & Young LLP as their independent registered public accounting firm. They issued an unqualified opinion on the consolidated financial statements and internal control over financial reporting for the fiscal year ended September 30, 2024. |
ACN | KPMG LLP | Accenture plc is audited by KPMG LLP as their independent registered public accounting firm. In the 2024 annual report, KPMG LLP provided audit opinions on both the consolidated financial statements for the fiscal years ended August 31, 2024, 2023, and 2022, concluding they present fairly the financial position, results of operations, and cash flows in conformity with U.S. GAAP. They also concluded that Accenture maintained effective internal control over financial reporting as of August 31, 2024. |
ACT | KPMG LLP | Enact Holdings, Inc. is audited by KPMG LLP as their independent registered public accounting firm. KPMG LLP expressed an unqualified opinion on the consolidated financial statements for the years ended December 31, 2023, 2022, and 2021, and an unqualified opinion on the effectiveness of the company's internal control over financial reporting as of December 31, 2023. |
ADBE | KPMG LLP | Adobe Inc. is audited by KPMG LLP as their independent registered public accounting firm. In their audit opinion, KPMG LLP stated that the consolidated financial statements present fairly, in all material respects, the financial position of Adobe Inc. as of December 1, 2023, and December 2, 2022, and the results of its operations and cash flows for each of the fiscal years in the three-year period ended December 1, 2023, in conformity with U.S. generally accepted accounting principles. Additionally, KPMG LLP opined that Adobe maintained effective internal control over financial reporting as of December 1, 2023, based on criteria established in the Internal Control – Integrated Framework (2013) issued by the Committee of Sponsoring Organizations of the Treadway Commission. |
ADC | Grant Thornton LLP | Agree Realty Corporation is audited by Grant Thornton LLP as their independent registered public accounting firm. The firm issued its reports dated February 13, 2024, with respect to the consolidated financial statements and internal control over financial reporting included in the Annual Report on Form 10-K for the year ended December 31, 2023. |
ADI | Ernst & Young LLP | Analog Devices, Inc. is audited by Ernst & Young LLP as their independent registered public accounting firm. Ernst & Young LLP provided an unqualified audit opinion on the consolidated financial statements for the fiscal year ended November 2, 2024, and concluded that the internal control over financial reporting was effective as of November 2, 2024. |
ADM | Ernst & Young LLP | ADM is audited by Ernst & Young LLP as their independent registered public accounting firm. Ernst & Young LLP provided an opinion on ADM's consolidated financial statements for the fiscal year ended December 31, 2023, and issued an adverse opinion on ADM's internal control over financial reporting as of December 31, 2023, due to a material weakness. |
ADP | Deloitte & Touche LLP | ADP is audited by Deloitte & Touche LLP as their independent registered public accounting firm. Deloitte & Touche LLP expressed an unqualified opinion on ADP's consolidated financial statements and on the effectiveness of ADP's internal control over financial reporting for the fiscal year ended June 30, 2024. |
ADSK | Ernst & Young LLP | Autodesk, Inc. is audited by Ernst & Young LLP as their independent registered public accounting firm. The firm expressed an unqualified opinion on the financial statements and internal control over financial reporting for the fiscal year ended January 31, 2024. |
Analysis
The public company audit market is heavily concentrated among the Big Four accounting firms: Deloitte & Touche LLP, Ernst & Young LLP, KPMG LLP, and PricewaterhouseCoopers LLP. These firms collectively audit the vast majority of large public companies and Fortune 500 enterprises.
Regional and mid-tier accounting firms serve an important role in auditing smaller public companies, including BDO USA LLP, Grant Thornton LLP, RSM US LLP, and Marcum LLP. These firms often specialize in specific industries or geographic regions and provide competitive alternatives to the Big Four.
Auditor tenure varies significantly across companies, with some long-standing relationships spanning decades and others rotating auditors more frequently. The choice of auditor reflects factors including company size, complexity, industry expertise requirements, and audit committee preferences.
This data is extracted from 2024 10-K annual reports using Fintool's AI-powered analysis, providing comprehensive insights into the public company audit landscape and accounting firm market positions.