AEO for due diligence providers: AI search visibility ranking
How AI search engines rank due diligence providers by visibility and citations. 20 brands measured monthly across Google AI Mode: which brands the AI names in answers, which domains it cites as sources, and how the leaders compare. Due diligence providers helping investors and acquirers evaluate financial, commercial, legal, and operational risk before major transactions. Composite score: 70% visibility (% of AI answers naming the brand) + 30% citation rate (% citing the brand's domain). Full methodology →
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When buyers ask AI engines about due diligence providers, EY frequently emerges as the leader. With visibility in 62.5% of responses, EY stands out as a top choice among brands. Other notable mentions include Kroll and Bain & Company. These brands are consistently cited, which highlights their prominence in the industry.
The current rankings are shaped by the sources that AI engines cite most often, such as kroll.com, gartner.com, and even platforms like YouTube and Reddit. Many of these are aggregator or review sites, providing a broad array of opinions and evaluations that contribute to a comprehensive understanding of due diligence providers.
For buyers evaluating the list, understanding what AI engines value is crucial. Focusing on recent reviews and third-party validations can provide insight into the topical authority and relevance of each provider. This perspective helps in identifying which brand could best meet specific due diligence needs.
At a glance
What we observed in this category
EY dominates this category with a visibility score of 62.5%, more than eleven times the category average of 5.6%, and holds a composite score of 43.8 against the next closest brand, Kroll, at 15.0. That gap is material because it means Google AI Mode surfaces EY in responses far more consistently than any other due diligence provider. EY also grew its visibility from 50.0% to 62.5% in the latest period, reinforcing rather than softening its lead over the remaining 19 brands.
Kroll presents a notable divergence between visibility and citation. It records 0.0% visibility but 50.0% citation, meaning AI responses do not name Kroll prominently in answers yet the model draws on kroll.com as a source more than any other brand domain in the category. Boston Consulting Group shows a similar pattern with 0.0% visibility and 25.0% citation. EY sits on the opposite side: 62.5% visibility but 0.0% citation, suggesting it is named as a provider without its content being directly linked.
The top cited external sources in this category include kroll.com and bcg.com alongside non-brand domains such as gartner.com, reddit.com, youtube.com, and ziprecruiter.com. The presence of those non-specialist domains indicates Google AI Mode is drawing on a wide and sometimes unexpected source mix when constructing due diligence responses. All ten ranked brands share Google AI Mode as their top engine, confirming the audit data reflects a single-engine landscape with no meaningful cross-engine variation recorded here.
Movers & shakers since last refresh
Biggest visibility risers
-
EY 50% → 62% · rank #1 → #1+12pp
-
Bain & Company 0% → 12% · rank #11 → #3+12pp
The AEO ranking
| # | Brand | Visibility | Citation | Top engine |
|---|---|---|---|---|
| 1 |
ey.com
|
62% | 0% | Google AI Mode |
EY's 62.5% visibility is more than five times Kroll's composite score and over eleven times the 5.6% category average, yet it records zero citation against its domain. |
||||
| 2 |
kroll.com
|
0% | 50% | Google AI Mode |
Kroll holds 0.0% visibility but 50.0% citation, making it the most-cited brand domain in the category while remaining absent from direct AI answer mentions. |
||||
| 3 |
bain.com
|
12% | 12% | Google AI Mode |
Bain rose eight rank positions and entered visibility at 12.5% from zero, while also gaining 12.5% citation, making it the only top-5 brand improving on both metrics simultaneously. |
||||
| 4 |
kpmg.com
|
12% | 0% | Google AI Mode |
KPMG sits at 12.5% visibility and 0.0% citation, matching Deloitte and PwC exactly and sharing a composite score of 8.8 with both peers. |
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| 5 |
deloitte.com
|
12% | 0% | Google AI Mode |
Deloitte records the same 12.5% visibility, 0.0% citation, and 8.8 composite score as KPMG and PwC, showing no differentiation from its Big Four peers in AI responses. |
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| 6 |
pwc.com
|
12% | 0% | Google AI Mode |
| 7 |
bcg.com
|
0% | 25% | Google AI Mode |
| 8 |
stout.com
|
0% | 12% | Google AI Mode |
| 9 |
fticonsulting.com
|
0% | 12% | Google AI Mode |
| 10 |
westmonroe.com
|
0% | 12% | Google AI Mode |
| 11 |
marsh.com
|
0% | 0% | Google AI Mode |
| 12 |
cohnreznick.com
|
0% | 0% | Google AI Mode |
| 13 |
grantthornton.com
|
0% | 0% | Google AI Mode |
| 14 |
lincolninternational.com
|
0% | 0% | Google AI Mode |
| 15 |
aon.com
|
0% | 0% | Google AI Mode |
| 16 |
controlrisks.com
|
0% | 0% | Google AI Mode |
| 17 |
alvarezandmarsal.com
|
0% | 0% | Google AI Mode |
| 18 |
bdo.global
|
0% | 0% | Google AI Mode |
| 19 |
rsm.global
|
0% | 0% | Google AI Mode |
| 20 |
mckinsey.com
|
0% | 0% | Google AI Mode |
Sources AI engines trust in this category
Across the 8 buyer-intent queries we ran on due diligence providers, these are the domains Google AI Mode cited most often. If you're not on this list — or if your competitors are — that's a concrete PR / linkbuilding target.
How to read this AEO ranking
Four things worth knowing before you act on the numbers above. These are the same definitions across every industry page — for category-specific observations, see the What we observed section above (where available) and the per-brand insights inline in the ranking.
Visibility = being named
A brand's visibility % is the share of AI answers that mention it by name in the response prose. This is who AI engines actively recommend to the buyer. More on visibility →
Citation rate = being trusted
Citation rate is the share of AI answers that include the brand's domain as a clickable source link. This is what the AI treats as authoritative evidence, different from being named. More on citation rate →
Top engine differs by brand
The "top engine" column shows which AI surface each brand performs best on. Big gaps between a brand's score across engines usually points to specific content or schema gaps. How AI engines pick sources →
AEO rankings move month to month
AI engines re-crawl and re-rank on shorter cycles than classical search. We re-audit every brand on this list at least every 30 days and refresh this page automatically. How AI search ranking works →
Run an AEO audit on your own due diligence providers brand
The brands above were curated from public market-leader lists. Want the same answer engine optimisation measurement against your own brand — including the queries you appear on, which competitors get named instead, and a prioritised fix list? Run a free preview.
Frequently asked about AEO for due diligence providers
Who leads AI visibility in the due diligence providers category?
EY leads with 62.5% visibility and a composite score of 43.8, far ahead of second-ranked Kroll at 15.0. EY also grew its visibility by 12.5 percentage points in the most recent period.
Which due diligence brand is most cited by Google AI Mode even though it rarely appears in answers?
Kroll records 0.0% visibility but 50.0% citation, and kroll.com is listed as the top cited source domain in the category, indicating the AI uses its content without naming it prominently.
What external sources does Google AI Mode anchor on for due diligence queries?
The top cited sources include kroll.com, gartner.com, bcg.com, reddit.com, youtube.com, and ziprecruiter.com, suggesting the AI pulls from a broad mix including non-specialist platforms.
How do the Big Four firms compare in AI visibility for due diligence?
KPMG, Deloitte, and PwC each score 12.5% visibility, 0.0% citation, and a composite of 8.8, showing no differentiation between them. EY significantly outperforms all three.
Which brand made the biggest rank improvement in this category?
Bain and Company rose eight positions from rank 11 to rank 3, entering visibility at 12.5% from a previous score of 0.0% while also gaining 12.5% citation in the same period.
How does the category average compare to the top performers?
The category average visibility is 5.6% and average citation is 6.2%, meaning EY's 62.5% visibility is more than eleven times the average and Kroll's 50.0% citation is over eight times the average.