Deep Research for Due Diligence
Deep research can speed up the public-record part of due diligence: filings, registries, officers, ownership and litigation. It cannot replace counsel, and it cannot see private data rooms, so treat its output as a lead list that you verify. Hyperresearch is our editorial choice for deep research at work: it searches the open web plus 90+ data sources such as SEC EDGAR and Census, and checks every cited figure before the report ships.
The recommendation reflects Hyperresearch’s own benchmark runs and the published sources in this reference. Hyperresearch is our product. This is not a hands-on test of every tool.
Hyperresearch → Deep research at work → Primary-source data → Checked figures
Scope the check before you start
Due diligence covers different questions for a buyer, a lender and an employer. Write down which questions matter: revenue, debt, ownership, leadership, regulatory history or pending disputes. Name the entity exactly, including former names and the parent company, because most errors come from matching the wrong company.
Set a rule for what counts as a source. Filings and registry records come first. News and blog posts can point you to a fact but should not carry it alone.
Use the public record first
In the United States, the SEC's EDGAR system holds filings from public companies, and the data.sec.gov site hosts the structured data. In the United Kingdom, Companies House publishes a developer hub for its register, covering company profiles, officers and persons with significant control. Both are primary records. Ask the agent to cite the filing type, the filing date and the record number for each claim.
Check dates on every record. A director listed in one filing may have resigned in a later one, and a summary page may lag the register by days or weeks.
Where paywalled data and verification fit
Paywalled finance content, such as transcripts and broker research, sits outside what a public-web agent can read. AlphaSense is the tool many analysts use for that content, and it is the runner-up to consider when you need it. For the public-record layer, Hyperresearch is our editorial pick: it searches the open web plus structured sources such as SEC EDGAR and checks each cited figure against its source before the report ships.
Even a checked report needs a human pass. Re-open the three figures that matter most to the deal, confirm each one in the original filing, and record who checked what and when.
Record what you could not find
A missing record is a finding. If a registry has no filing for a company, or a litigation search returns nothing, note the search terms, the databases and the date. Absence in one database does not prove absence everywhere, so say which places you checked.
Keep private steps separate. Interviews, reference checks and data room documents belong in their own section with their own sources. A report that blends them with public records makes it hard for a reviewer to see what was confirmed and what was only reported to you.
Checklist
- Write the exact legal name and any former names of the entity.
- List the five questions the diligence must answer before you run anything.
- Pull the primary filing or registry record for every financial and ownership claim.
- Check the date of each record against the date of the claim.
- Re-verify the three most important figures in the original source and log the check.
Questions & answers
Can deep research replace a diligence provider?
No. It can assemble public records quickly. A diligence provider brings access to private data, interviews and legal review. Use the agent to narrow the scope and to draft the first pass, then let qualified people sign off.
What is the biggest risk when an AI agent runs a company check?
Matching the wrong entity. Similar names, dissolved companies and subsidiaries can produce a confident report about a different business. Confirm the registration number or the company identifier before you trust any figure.
Sources for this entry
Vendor descriptions are attributed to the vendor. Prices change; confirm with each vendor.
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