Allen & Overy
A&O Shearman is a top-5 global law firm from the 2024 Allen & Overy/Shearman merger.
On the record
Checkpoint: FY27 results reporting partner attrition trend and profit-per-partner gap versus Kirkland
The call
The firm is not at risk of dying, it is at risk of losing its best people to richer American rivals while its own AI tools quietly become a product line.
Allen & Overy merged with Shearman Sterling in May 2024 to create a top-5 global law firm that handles complex legal work requiring a law degree and insurance backing, which AI chatbots cannot legally replace. The real threat is not software but rival US law firms like Kirkland and Latham poaching the best senior lawyers and winning the biggest client deals, which shrinks profits and prestige for those who stay. The one thing to watch is whether top money-making partners start leaving in large numbers or whether the merged firm can keep profits per partner stable through 2027, since even losing a few star lawyers in one practice area can damage the whole operation.
Why
01
AI pressure: Harvey AI (via A&O Shearman's own agentic tools) and generic AI legal vendors. AI tools like ContractMatrix cut contract review time but the firm built and sells this itself, so AI feeds revenue rather than eating it here. Could AI do the core job? Unlikely.
02
Bigger players: Kirkland & Ellis and Latham & Watkins. US rivals pay partners far more, PEP gap is roughly £2m versus Kirkland's £8m plus, and 17 partners left through mid-2026. Could a giant copy it? No, they are blocked.
03
What protects it. Bar admission and malpractice liability rules mean only licensed lawyers can give the opinions clients pay for, so no software replaces the firm.
What would change this call
FY27 results (July 2027) showing revenue and PEP trajectory versus Kirkland/Latham. Whether A&O Shearman is closing or widening the profitability gap with US rivals.
Partner departure count in H2 2026 and Q1 2027 compared to 17 through mid-2026. Whether senior talent exodus is accelerating or stabilizing.
Whether 2027 lateral hires and promotions exceed or fall short of partner departures. Whether the firm can replace lost rainmakers faster than it loses them.
Partner departure count in H2 2026 and Q1 2027 compared to 17 through mid-2026. Whether senior talent exodus is accelerating or stabilizing.
Whether 2027 lateral hires and promotions exceed or fall short of partner departures. Whether the firm can replace lost rainmakers faster than it loses them.
Key numbers
- FY26 revenue flat at $3.7bn, profit up 14% to $1.6bn
- 17 partner departures called 'unprecedented' by Law.com
- PEP about £2.2m versus Kirkland's over £8m
Named risks
- Unprecedented partner attrition (17 departures by mid-2026) eroding practice-group continuity.
- Widening profit-per-partner gap versus Kirkland and Latham signals declining relative competitiveness.
- FOIA lawsuit filed December 2025 seeking disclosure of Trump pro bono deal terms creates reputational exposure.
- Enforced nine-month partner notice periods risk internal morale and legal friction with departing partners.
- Flat revenue growth despite profit gains raises questions about long-term top-line strategy.
Rivals, as read in July 2026
| Rival | Direction | Evidence |
|---|---|---|
| Kirkland & Ellis | losing to | PEP £2m vs Kirkland's >£8m, as of 2026-06-25 |
| Latham & Watkins | losing to | Latham revenue ~$7bn vs A&O Shearman's $3.7bn, as of 2026-05-17 |
| Weil Gotshal & Manges | losing to | Hired global fund finance co-head Fiona Cumming, 2026-06-26 |
| Norton Rose Fulbright | losing to | Hired US data privacy head Helen Christakos, 2026-06-26 |
| Clifford Chance, Freshfields, Linklaters | contesting | Traditional Magic Circle peer set, still contesting UK top-10 profitability as of 2026-06-25 |
Questions people ask
- Is Allen & Overy (now A&O Shearman) still profitable?
- Yes. FY26 results (year to April 30 2026) showed profit before tax up 14% to $1.6bn and profit per equity partner up 12% to $2.9m (£2.2m), even as revenue stayed flat at $3.7bn, per results published July 16, 2026.
- Is A&O Shearman losing partners to rivals?
- Yes, Law.com called it 'unprecedented' partner mobility: 17 partner departures reported through mid-2026, including fund finance co-head Fiona Cumming to Weil Gotshal and privacy head Helen Christakos to Norton Rose Fulbright, both announced June 26, 2026.
- Could AI replace Allen & Overy / A&O Shearman lawyers?
- Not the core legal opinion work, which requires bar admission and malpractice-insured liability. But AI already automates contract review: the firm's ContractMatrix tool saves roughly 7 hours per contract (about 30% efficiency gain) as of April 2026.
- Who is A&O Shearman's biggest competitor?
- Kirkland & Ellis, which reports over $10bn revenue and profit per equity partner above £8m versus A&O Shearman's roughly £2m, per a June 25, 2026 analysis of 2026 Magic Circle profitability.
- What happened to Allen & Overy as a company?
- Allen & Overy LLP dissolved on April 30, 2024 and merged with US firm Shearman & Sterling effective May 1, 2024, forming A&O Shearman, a Swiss verein with roughly 4,000 lawyers and 800 partners across 47 offices.
- Does A&O Shearman still rank among the top law firms globally?
- Yes but slipping relatively. As of May 17, 2026 rankings placed it 4th to 5th globally by revenue behind Kirkland, Latham, and DLA Piper, though it remains the only Magic Circle firm in London's top-10 most profitable firms as of June 25, 2026.
Timeline
- 2026-07-17Leadership credits firmwide AI adoption as driver of FY26 profit growth
- 2026-07-16FY26 results: revenue flat $3.7bn, PBT up 14% to $1.6bn, PEP up 12% to $2.9m
- 2026-06-26Fund finance co-head Fiona Cumming departs to Weil Gotshal, privacy head to Norton Rose
- 2026-06-25Analysis shows Magic Circle profits overtaken by US rivals, A&O Shearman lags Kirkland
- 2026-06-04Analyze module launched for AI-driven playbook-based contract review
- 2026-02-10A&O Shearman and Harvey announce agentic AI agents for complex legal workflows
- 2026-01-21Firm enforces up to nine-month partner notice periods amid rising exits
- 2025-04-14Firm commits $125m pro bono legal work in deal with Trump administration
- 2025-01-0157 South Africa staff including 14 partners move to Bowmans after Johannesburg closure
- 2024-05-01Allen & Overy and Shearman & Sterling merger completes, forming A&O Shearman
Revision history
23 July 2026
First assessed. Protection under test. The text above is fixed as of this date and is not edited afterwards.
In the same band
Sources
- A&O Shearman merger successfully completed (2024-05-01)
- A&O SHEARMAN MERGER SUCCESSFULLY COMPLETED (2024-05-01)
- A&O Shearman posts flat revenue as PEP returns to pre-merger levels (2026-07-16)
- 'Magic circle' law firm profits overtaken by US rivals (2026-06-25)
- A&O Shearman (2026-04-10)
- A&O Shearman Sees Latest Exit as Global Fund Finance Co-Head Joins Weil Gotshal (2026-06-26)
- A&O Shearman FY26 Results Show Strong Profit Growth (2026-07-16)
- A&O Shearman Partner Leavers Face Longer Notice Periods as Exits Mount (2026-01-21)
- How A&O Shearman is reshaping law with trailblazing AI tool (2026-04-10)
- A&O Shearman and Harvey to roll out agentic AI agents targeting complex legal workflows (2026-02-10)
- smarter AI-driven contract review (2026-06-04)
- A&O Shearman Hones Profitability Amid Flat Revenue and 'Deliberating Reshaping' (2026-07-16)