Auditor Changes Roundup: Q2 2026

Sadler Gibb & Associates LLC recorded the highest net gain among all auditors in Q2 2026 with 13 new engagements and 3 departures for a net of +10. Eleven of its 13 new engagements were a result of its acquisition of Assure CPA. Simon & Edward LLP's new engagements were a result of their acquisition of BCRG Group. Among the Big Four, KPMG LLP led with 8 engagements and 2 departures for a net of +6. Across all auditors, 160 new engagements and 175 departures were filed during the quarter.

Auditor Change Matrix

Public company audit client gains and losses  |  April 1 – June 30, 2026

*Gains and losses exclude foreign affiliates. Source: Ideagen Audit Analytics, Q2 2026 (April 1 – June 30, 2026).

Among the Big Four, the quarter split two and two. KPMG LLP was the clear gainer, adding 8 engagements against just 2 departures for a net of six, and PricewaterhouseCoopers LLP also edged ahead at 6 engagements to 5 departures, a net of one. Ernst & Young LLP and Deloitte & Touche LLP moved the other way, EY at 5 engagements against 9 departures for a net of -4 and Deloitte at 4 against 12 for a net of -8. Taken together, the Big Four booked 23 new engagements against 28 departures, a net loss of 5 clients. That churn stayed largely within the top tier: 43% of the 23 engagements came from other Big Four firms and another 43% from global and national firms, while of the 28 departures, 39% went to other Big Four firms and 43% to global and national firms.

The global and national firms told a similar story, with one firm ahead and the rest slipping. Grant Thornton LLP was the lone net gainer at 11 engagements to 8 departures, a net of three, and RSM US LLP held even at 2 and 2. BDO USA PC (5 engagements, 6 departures) and Forvis Mazars LLP (1 and 2) each finished down one, CBIZ CPAs PC was off by four on 6 engagements against 10 departures, and Baker Tilly US LLP saw the widest gap, 2 engagements against 7 departures for a net of -5.

Q2 2026

Source: Ideagen Audit Analytics

Market Cap and Audit Fee Gains

KPMG LLP recorded the largest net market capitalization gain at $21.72 billion in Q2 2026, adding $22.57 billion and losing $0.85 billion. Deloitte & Touche LLP was second at $16.69 billion, followed by PricewaterhouseCoopers LLP at $9.51 billion. Grant Thornton LLP recorded the largest net market capitalization loss at -$11.68 billion, followed by Baker Tilly US LLP at -$11.28 billion.

Q2 2026

Amounts shown in billions USD
Source: Ideagen Audit Analytics

KPMG LLP recorded the highest net audit fees gained at $14.2 million. CBIZ CPAs PC was second at $3.2 million, followed by Cherry Bekaert LLP at $2.5 million, Grant Thornton LLP at $2.3 million, and BDO USA PC at $2.2 million.

Amounts shown in millions USD
Source: Ideagen Audit Analytics

Of the 63 departures from named firms in Q2 2026, 61 were client-initiated dismissals and 2 were auditor resignations. Of the 112 departures from regional and local firms, 79 were dismissals and 33 were resignations. In aggregate, 140 of 175 Q2 2026 departures (80%) were client-initiated.