SystemPrivate Markets

Virtual Data Room Due Diligence

Virtual data room due diligence that reads every file and cites every red flag to its page, before you sign

Every document read and every red flag cited to its page, before you sign.

See one case, screen by screen ↓
demo5,418documentsin the sample data room, 61,240 pages in six languages, read or explained
demo46hoursfrom the room opening to the first full read and the first cited red-flag report
demo41of 47 flagscross-checked by an agent from a second workstream, each with both citations
target100%of the data room read or explained, every flag cited to its page
In short

What is Virtual Data Room Due Diligence?

Virtual data room due diligence, or VDR due diligence, is the core of the buy-side due diligence process: the buyer's review of everything a seller puts in its data room (contracts, financials, tax, commercial, ESG and HR documents), read before signing to find what changes the price. Virtual Data Room Due Diligence puts eight AI agents on the whole room in its original languages, pins cited red flags to the folder and page, has a second workstream cross-check each one, and leaves every decision to the deal lead.

AI in asset management: a buyer's guide to agentic AI for investment managers →

Updated

The problem

Why virtual data room due diligence leaves pages unread at signing

Virtual data room due diligence on a buyout, the heart of buy-side due diligence, means thousands of files in the seller's languages, a 60–90 day exclusivity window and a team that cannot read it all. The associate exports the index, splits folders by workstream and sends them to outside counsel, the quality-of-earnings provider, the ESG adviser and an HR adviser. Each reads its slice, keeps its own due diligence tracker and writes its own red-flag report. Foreign-language files wait for translation, late uploads and scans slip through, and nobody can say how much of the room was actually read.

The findings that change the price sit between workstreams. Legal sees a change-of-control clause; whether it matters depends on a customer's share of revenue in the QoE databook, which someone else is reading. Issues found days before signing become R&W insurance exclusions and special indemnities, when they could have been price, protection or a closing condition. And when the buyer owns a competitor, customer-level pricing must stay inside the clean team while everyone else works from summaries.

typical0.2–1% of deal valuespent on external diligence on deals above $100M
typical4–6weeksof reading in a typical diligence phase
typical3,993filesin a typical $100M–$500M deal room
Where a deal's diligence days go, from first read to the committee reportestimated
By hand28 days
With the solution2 days
  • Indexing the room and splitting folders across advisers2 → 0.1 d
  • Waiting for foreign-language documents to be translated5 → 0.2 d
  • Reading by workstream and filling each team's tracker12 → 1 d
  • Linking clauses to the revenue and costs they touch3 → 0.2 d
  • Writing and merging seller questions2 → 0.2 d
  • Reconciling adviser red-flag reports into the IC report4 → 0.3 d

Estimated split for a mid-market buyout data room of about 5,000 files, by hand and with the solution.

How it works

How a data room is read

Eight agents read every page, check each other and draft the questions; the deal lead decides every flag.

What comes in
Data room in5,000+ files a deal · any language, late uploads included
Agents at work
Intake agentread, translate, explain
Then
Legal agent
Financial & Tax agent
Commercial agent
ESG and HR agents
Then
Cross-checka second workstream sizes every flag
Then
Questions agentseller list
Report agentcited report
A person decides
Deal team leadaccepts every flag
What comes out
Flags priced or protected
Signed IC report
Coverage on the record
One case, step by step

Virtual data room due diligence on one deal, screen by screen

Quillfield Private Equity Fund V is buying Skarvik Logistik AB, a Swedish contract-logistics company, in Project Fjord: revenue SEK 4,520M ($429M), adjusted EBITDA SEK 680M ($64.6M), indicative enterprise value $708M. The seller's room opened on Monday, October 12 with 5,418 documents in six languages. One week later, eight days before the investment committee, here is the deal team's morning in the working solution.

  1. 01Monday, 09:40

    The agents report what they found since Friday

    Owen Hart · Deal team lead

    Owen's home screen: 5,362 of 5,418 documents read, the other 56 explained; 14 of 47 flags await him; 30 seller questions are ready to release; 8 days to the committee. Beside it the agents report in their own words: 41 files uploaded at 07:12 are being read, the Legal agent raised a new critical flag on a privacy authority inquiry, and the Questions agent proposes closing F-32 because the missing German return is now in the room.

    Report agent: “Report v3 is assembled from 33 decided flags. 14 flags still need your decision before I can add them.”

  2. 02The data room

    The room as the seller indexed it, with a reading bar on every folder

    Owen Hart · Deal team lead

    Folders 1 to 11 appear as the seller numbered them, each with its file count, how much is read and the red flags pinned where they sit. Workstream tabs filter Legal 13, Financial 9, Tax 6, Commercial 7, ESG 7 and HR 5. Owen opens folder 4.2.17, the Nordhavn Retail Group master agreement, and asks which contracts need consent. The Legal agent answers with every page cited.

    Legal agent: “Change-of-control rights found in 9 documents.” Nordhavn may terminate, the revolving credit facility is prepayable, the Borås lease needs consent.

  3. 03Folder 4.2.17, page 12

    A Swedish clause beside its English translation, sized by a second workstream

    Legal agent, then the Financial & Tax agent

    Clause 18.3 of the Nordhavn agreement lets the customer terminate on 90 days' notice within six months after a change of control, and the purchase is one. The Financial & Tax agent cross-checks it against the revenue file: Nordhavn is SEK 1,040M of SEK 4,520M FY2025 revenue, 23.0%, with an EBITDA contribution of SEK 152M ($14.4M). Playbook rule L-07, a customer above 10% of revenue with a change-of-control right, raises F-01 to critical at confidence 0.96. The Commercial agent adds that no renewal talks are planned before 2028.

    Suggested treatment: “Price item: hold back $42M of the price until Nordhavn waives clause 18.3 in writing.” Report agent · you decide.

  4. 0409:42

    He decides: a price item, with a reason code

    Owen Hart · Deal team lead

    Owen chooses Price item and the reason code “Revenue at risk on change of control”. The treatment reads “Hold back $42M until Nordhavn waives clause 18.3 in writing”, and his note for the record says to raise it with the seller before the committee. He asks the Questions agent to queue Q-031 and Q-032 for release.

    “Signed as Owen Hart, Deal Team Lead. The decision, reason, note and the evidence cited are written to the audit trail and flow into the red-flag report.”

  5. 05Seconds later

    The decision flows into the questions and the report

    Questions agent and Report agent

    The Questions agent queues Q-031, asking whether Nordhavn has been approached about waiving clause 18.3, and Q-032, on Appendix 3 volumes and prices, which goes to the clean team only. The Report agent adds F-01 to report v3 under Price items. Below, the trail shows every step the agents took to reach the flag, from the Intake agent translating the 41 pages on October 12 to the hand-off to Owen.

    Report agent: “Added F-01 to report v3 under Price items: $42M holdback until a written waiver.”

  6. 06When agents disagree

    A disputed flag goes to a person, with both readings

    Financial & Tax agent and Legal agent

    The Financial & Tax agent finds SEK 118M of Q4 receivables sold under a non-recourse factoring line and left out of the net-debt bridge (F-11). The Legal agent disagrees: the factoring line is disclosed in the credit facility, so the bridge may be right. At confidence 0.78, below the 0.85 threshold, neither agent settles it; both readings are cited and the flag goes to a person.

    “Confidence 0.78, below the 0.85 threshold: a person decides. Both readings are cited.”

  7. 07ESG in the same room

    ESG due diligence, cited to the page and mapped to SFDR

    Owen Hart · Deal team lead, then the ESG agent

    Owen opens folder 5, real estate and environment: 512 documents, 98% read, 8 scans still being read, and two ESG flags pinned. He asks the ESG agent to summarize the ESG red flags. It reports seven, two of them critical: groundwater at the Duisburg site at 1,840 µg/l against a 200 µg/l trigger, with EUR 2.1M to remediate and no provision, and the top customer's 40% fossil-free transport target against Skarvik's 14% today. Both are mapped to SFDR adverse impacts PAI 1 and PAI 8.

    The ESG agent never scores a company without a cited source.

  8. 08Seller questions

    One clean list for the seller, released only by the deal lead

    Leah Moreno · Deal associate

    The crew and the team have drafted 64 seller questions and merged 12 duplicates across workstreams. Each is tied to its flag and routed to the adviser whose scope it is: Calder & Voss for financial and tax, Ashby Kerr for legal and HR, Brightwater for ESG, and questions for the seller itself go out through the seller's data room. When the seller answers, the Questions agent reads the new files and proposes to close or escalate. For Q-016 it proposes closing F-32 because the German trade-tax return is now in the room.

    Questions agent limit: never releases a question; a person does.

  9. 09Coverage

    Every unread file explained, nothing silently skipped

    Intake agent

    Intake shows the room connected read-only, synced every 15 minutes, 214 exact copies collapsed and the reading pipeline from 5,418 received to 5,362 read by the workstream agents. The 56 not yet read are each explained: 41 new uploads being read, 12 scans re-read at 600 dpi, and 3 password-protected transfer-pricing files that cannot be read, so a question goes to the seller.

  10. 10Before the committee

    A cited red-flag report, signed by two people

    Owen Hart and Daniel Okafor

    Report v3 is assembled from 33 decisions: a summary, price items, SPA protections, closing conditions, the 100-day plan, flags with the seller and a coverage statement, every line cited. Leah Moreno has reviewed it. Owen signs as deal lead, Daniel Okafor co-signs as legal counsel after him, and the report goes to the committee through the deal CRM. The 14 flags still open go into v4 once they are decided.

    Coverage statement: “5,418 of 5,418 documents read or explained.”

Who it’s for

Built for everyone at the table on a deal.

The same data room, seen by five of the people who carry the deal to signing — what diligence looked like, and what it looks like now.

OH
Owen HartPartner, Deal Team Lead · Quillfield Private Equity, London
Deal team lead
Before
Reconciles four advisers' red-flag reports into the IC memo, and still cannot say how much of the room was read.
Now
Opens the room with flags pinned where they sit, decides each one with a reason code, and signs a report with its coverage statement.
LM
Leah MorenoVice President, deal associate · London
Deal associate
Before
Spends the first two weeks finding out what is in the room, then merges every team's questions into the seller's Q&A by hand.
Now
Starts from a room already read, with questions drafted, duplicates merged and each routed to the adviser in scope.
DO
Daniel OkaforLegal Counsel · Quillfield Private Markets, New York
Legal counsel
Before
Reads a clause without the numbers that make it matter: a clause without its numbers is half a finding.
Now
Sees the Swedish clause beside its English translation with the revenue cross-check, and co-signs the report after the deal lead.
IS
Ingrid SolbergESG Diligence Lead · Quillfield Private Markets, London
ESG diligence lead
Before
Runs ESG diligence beside the deal, while LPs ask what the firm knew before it signed.
Now
Sees ESG flags in the same room, cited to the page and mapped to SFDR adverse impacts, owned by her workstream.
RM
Ravi MenonCompliance, Private Markets · Quillfield Capital
Compliance
Before
Pieces together who saw what, and why, when an examiner, an LP or an underwriter asks.
Now
Approves clean-team membership and agent changes, and exports the audit pack from a trail with its hash chain verified.
Built on the engine

8 agents. Each with one job, and hard limits.

Eight agents read every page, check each other and draft the questions; the deal lead decides every flag.

Intake agent

Connects to the seller's room read-only, extracts text from scans, detects the language, translates, removes duplicates and watches for new uploads.

  • Never marks a file read it could not parse
  • Never downloads outside the room's rules
Legal agent

Reads contracts, corporate, financing, real estate, litigation and data protection documents for change of control, assignment, exclusivity and caps, against the firm's playbook.

  • Never closes a flag
  • Never advises the seller
Financial & Tax agent

Reads the QoE databook, revenue by customer, add-backs, working capital, debt-like items, tax audits and transfer pricing, and sizes other workstreams' flags.

  • Never restates accounts
  • Flags only with a tie-out
Commercial agent

Reads customer and supplier contracts, pricing, renewals, churn and the management presentations, and recognizes competitively sensitive pages.

  • Never shows customer-level pricing outside the clean team
ESG agent

Reads environmental surveys, permits, emissions, safety and human rights material, and maps findings to SFDR adverse impacts and EDCI metrics.

  • Never scores a company without a cited source
HR agent

Reads employment contracts, collective agreements, contractors, pensions and key-people terms.

  • Never reads personal files beyond what the playbook names
Questions agent

Drafts seller questions from flags, merges duplicates, routes each to the right adviser, reads the answers and proposes to close or escalate.

  • Never releases a question; a person does
Report agent

Assembles the cited red-flag report and the SPA issues list from the deal lead's decisions, and writes the coverage statement.

  • Never includes an undecided flag
  • Never signs
Deal lead and legal counsel

Decide, release, sign. The agents propose; a named person decides.

Ask in plain words

Ask about the data room, in plain words

Ask what could move the price, what is unread or what the ESG picture is, or tell the agents what to draft. Every answer points to the page.

Which flags could change the price?

Four critical flags are open and could move the price: F-01, the top customer may terminate on a change of control, 23.0% of revenue; F-02, SEK 31M of recurring add-backs; F-03, a PLN 14.2M Polish tax assessment not disclosed; F-04, EUR 2.1M of Duisburg remediation.

Is anything in the data room still unread?

5,362 of 5,418 documents are read. The other 56 are explained: 41 uploaded at 07:12 today are being read, 12 scans are being re-read at higher resolution, and 3 transfer-pricing files are password-protected, so the Intake agent drafted Q-047 for the seller.

Draft the seller questions for the Nordhavn clause

Done. Q-031 asks whether Nordhavn has been approached about waiving clause 18.3; Q-032 asks for Appendix 3 volumes and prices, for the clean team only. Both wait for your release.

Summarize the ESG red flags for the committee

Seven ESG flags; two critical. Duisburg groundwater shows 1,840 µg/l of hydrocarbons against a 200 µg/l trigger, EUR 2.1M to remediate, with no provision. Nordhavn requires 40% fossil-free transport by 2028; Skarvik is at 14%. Mapped to SFDR PAI 1 and PAI 8.

Every screen

The working solution, as it ships.

13 screens from the working solution, on its sample data. Pick one to see it large.

The data roomVirtual data room due diligence on the seller's own folder tree: a reading bar on every folder, red flags pinned to the page, workstream tabs and a conversation with the agents about the folder.
TodayThe deal lead's morning: documents read, flags awaiting him, seller questions to release, days to the committee, and what the agents found since Friday.
One red flag, original beside EnglishA change of control clause in Swedish beside its English translation, the cited finding, the cross-check from a second workstream and the suggested treatment.
The deal lead decidesAccepting a red flag as a price item with a reason code, a treatment and a note for the record.
The decision and the agents' trailThe decision on the record, the seller questions queued, the flag added to the red-flag report, and every step the agents took to reach it.
When agents disagreeA disputed cross-check below the confidence threshold, both readings cited, handed to a person to decide.
ESG due diligenceESG due diligence in the same data room review: environmental flags cited to the page and mapped to SFDR principal adverse impacts.
Seller questionsSeller questions drafted from flags, duplicates merged, each routed to the adviser in scope and released only by the deal lead.
Intake and coverageThe room connected read-only, documents by language, the reading pipeline and every unread file explained.
The red flag due diligence reportThe cited red flag due diligence report for the investment committee, with its sections and versions, and the sign-off: reviewed by the associate, signed by the deal lead, then co-signed by legal counsel.
The clean teamWhy the clean team exists, its named members, who is excluded, the fenced pages and every view logged.
Audit trailEvery read, flag, cross-check, question, decision and signature with who, what, when, why and the evidence, ready to export as one pack.
Your red-flag rulesThe versioned red-flag playbook with severities and cross-checking workstreams, materiality, the confidence threshold and the bulk-decision lock.
Governance

Built for the committee record: cited, decided, signed.

Every finding cites its pageEach flag and each agent statement cites the folder, document, page and language. One click opens the original passage beside its English translation.
The deal lead decides every flagAgents propose; the deal lead accepts each flag as a price item, SPA protection, closing condition or 100-day plan item, or rejects it, always with a reason code. Critical flags can never be accepted in bulk.
Cross-checked, or sent to a personEvery flag goes to an agent from a second workstream. When they disagree, or confidence falls below 0.85, a person decides with both readings cited.
Nothing reaches the seller unseenSeller questions are drafted by the agents or the team and released only by the deal lead. Outside advisers see only the questions in their own scope; any other screen shows “Not in your scope”, and the attempt is logged.
Clean-team pages stay fencedCustomer-level pricing stays with named clean-team members, approved by compliance. Everyone else, including a deal lead with a board seat at a competitor, sees aggregated summaries, and every view is logged.
Two signatures and a tamper-evident trailThe deal lead signs the report and legal counsel co-signs. Every read, flag, cross-check, question, decision and setting change is on the audit trail with who, what, when, why and the evidence, ready to export as one pack.
Configuration

Your playbook, not ours

The red-flag rules, thresholds and data rules are settings, versioned and approved: the platform administrator changes them and compliance approves.

SettingDefaultChoose from
Red-flag playbookv4.2, approved by the deal lead and complianceEach rule on or off, with its severity and cross-checking workstreams
Customer with a change-of-control rightAbove 10% of revenue → criticalCross-checked by Legal + Financial
Tax assessment not in the disclosure letterAbove $1M → criticalCross-checked by Tax + Legal
Materiality$1M or 1% of EBITDAFlags below this go to the register as medium
Confidence threshold0.85Below this, a person reviews the flag before the deal lead
Bulk decisionsNever for critical flagsLocked by policy
Data residencyEU (Stockholm region)EU (Stockholm region) · United States (Virginia) · Singapore
If the deal endsDestroy seller material within 30 days, with a destruction certificateRetention after close: 7 years · 10 years · legal hold suspends deletion
Connections

Works with the systems a deal already runs on

Virtual data roomthe seller's room, read-only, synced every 15 minutes, late uploads included
Q&A moduleseller questions out, answers and new files in
Deal CRMthe deal record, IC approvals and the filed red-flag report
Document repositoryyour deal folders, the report and the audit pack archive
Red-flag playbookyour materiality rules and red-flag rules, versioned
Single sign-onyour team and outside advisers, with MFA and scoped roles
What it changes

The difference, in numbers.

Every figure is labelled: a target the solution is built to, an estimate, a typical published result, or a proven one.

target
100%
of the data room read or explained, every flag cited to its page
every file
not a sample
target
40%
fewer first-pass adviser review hours on a deal
Today0.2–1% of deal value on diligence
With agentsadvisers start from cited flags
target
2days
from the room opening to the first cited red-flag report
Today4–6 weeks of reading
With agentsabout 2 days

“demo” = seen in the working solution, on its sample deal data · “target” = the design goal, measured in the live solution · “estimated” = our estimate · “typical” = published figures (virtual data room providers' diligence cost and timeline guides, vendor, 2026 — external diligence at about 0.2–1% of deal value on $100M+ deals, a 4–6 week diligence phase; a Q2 2026 study of M&A data rooms, vendor — about 3,993 files in a typical $100M–$500M deal room). Swedish kronor, euro and zloty amounts are shown as the working solution shows them, with US dollars where it gives them. People, firms, funds, advisers, companies and deals named on this page are fictional — characters and sample data in the working solution.

Questions

What deal teams ask us.

What is virtual data room due diligence?

Virtual data room due diligence, or VDR due diligence, is the core of the buy-side due diligence process: the buyer's review of everything a seller puts in its data room (contracts, financials, tax, commercial, ESG and HR documents), read before signing to find what changes the price. Virtual Data Room Due Diligence puts eight AI agents on the whole room in its original languages, pins cited red flags to the folder and page, has a second workstream cross-check each one, and leaves every decision to the deal lead.

What is a red flag due diligence report?

A red flag due diligence report lists the issues that matter for the deal, not a full description of the target. Here the Report agent assembles it from the deal lead's decisions, in sections for price items, SPA protections, closing conditions, the 100-day plan and flags still with the seller, with every line cited and a coverage statement. The deal lead signs it and legal counsel co-signs.

How does AI due diligence work in private equity?

An Intake agent reads and translates every file; Legal, Financial & Tax, Commercial, ESG and HR agents raise flags against your red-flag playbook. Each flag is sized by an agent from another workstream: a change of control clause, for example, is checked against the customer's share of revenue. A Questions agent drafts the seller list and a Report agent builds the report. The agents never decide, release or sign.

Can it prove how much of the data room was read?

Yes. Every folder shows how much of it is read, and every unread file is explained: new uploads being read, scans being re-read, password-protected files turned into a seller question. The report carries a coverage statement, such as “5,418 of 5,418 documents read or explained”.

Does it cover ESG due diligence and SFDR?

Yes. Here ESG due diligence in private equity happens in the same data room review: the ESG agent reads environmental surveys, permits, emissions, safety and human rights material, and maps its findings to SFDR principal adverse impacts and EDCI metrics. It never scores a company without a cited source.

How are clean team pages kept separate?

The Commercial agent recognizes competitively sensitive pages, such as customer-level pricing, and fences them to the named clean team, whose membership compliance approves. Everyone else sees aggregated, cited summaries, and every view, including a blocked attempt, is logged.

Do people stay in control of the diligence?

Yes. The deal lead accepts or rejects every flag with a reason code, critical flags can never be accepted in bulk, seller questions are released only by the deal lead, and the report needs two signatures. Agent and model changes are proposed by the administrator and approved by compliance.

How long does it take to go live?

The Agentic Solution Engine builds and deploys it from your requirements and documents — your red-flag playbook, materiality rules and the data room of a past deal — and it goes live once every quality gate has passed. We will walk you through it on one of your own deals first.

See it on
your next data room.

We'll run Virtual Data Room Due Diligence on the data room of one of your past deals.