Data brokers
The largest data broker companies
Data broker companies, largest first: the publicly reporting groups behind brokers registered in California for 2026, ordered by their own revenue figures.
Published
The short answer
By reported revenue, the largest companies with registered data broker units are S&P Global, Experian, Moody's, Equifax and TransUnion, followed by RELX (LexisNexis Risk), Dun & Bradstreet, ZoomInfo and LiveRamp. Revenue is for the whole group or segment, not data brokering alone, and each one is on California's 2026 data broker registry.
How we ranked them
Lists of the top data broker companies rarely say how they were chosen. This one has two rules. First, the company must have at least one unit on California's 2026 data broker registry, the public list of firms that sell personal information about people they have no direct relationship with.
Second, it must publish its revenue, so the order comes from its own results rather than our estimate.
What the ranking measures
That makes this a list of the largest groups that own data brokers, not of data brokering revenue. Experian's total includes credit reports and software; S&P Global's includes credit ratings and stock indices.
None of these companies reports revenue from selling personal data on its own. Several big registered brokers, such as Acxiom, Epsilon and Data Axle, don't publish separate figures and sit in a second table without a rank.
Data broker companies by reported revenue
| # | Company | Latest annual revenue | Period | Units on California's 2026 registry | What the registered units say about themselves |
|---|---|---|---|---|---|
| 1 | S&P Global | $15.336bn (group) | Year to Dec 2025 | S&P Global Inc; R.L. Polk & Co. (Mobility Global) | S&P Global Inc says it collects precise geolocation |
| 2 | Experian | About $8.45bn (group) | Year to Mar 2026 | Experian Information Solutions; Experian Marketing Solutions | Information Solutions is FCRA-covered; Marketing Solutions sold or shared data to a generative AI developer |
| 3 | Moody's | $7.7bn (group) | Year to Dec 2025 | Moody's Corporation | Sold or shared data to a generative AI developer |
| 4 | Equifax | $6,074.5m (group) | Year to Dec 2025 | Equifax Information Services; Equifax Workforce Solutions (The Work Number) | Both FCRA-covered; Information Services sold or shared data to a generative AI developer |
| 5 | TransUnion | $4,576m (group) | Year to Dec 2025 | Trans Union LLC; TransUnion Risk and Alternative Data Solutions; TransUnion Digital; TransUnion Interactive; Neustar Information Services; Neustar IP Intelligence | Trans Union LLC is FCRA-covered; the risk unit sold or shared data to a generative AI developer; Neustar Information Services collects precise geolocation |
| 6 | Dun & Bradstreet | $2,381.7m (group) | Year to Dec 2024 | Dun and Bradstreet Inc.; NetWise Data | Dun and Bradstreet Inc. sold or shared data to a generative AI developer |
| 7 | ZoomInfo | $1,249.5m (group) | Year to Dec 2025 | ZoomInfo Technologies | None of the sensitive categories or listed recipients |
| 8 | LiveRamp | $813m (group) | Year to Mar 2026 | LiveRamp Holdings | None of the sensitive categories or listed recipients |
| – | RELX: Risk segment (LexisNexis Risk Solutions) | £3,485m (segment) | Year to Dec 2025 | RELX Inc. (LexisNexis); LexisNexis Risk Solutions FL | LexisNexis Risk Solutions FL collects precise geolocation |
Dun & Bradstreet's figure is its last full year as a listed company: Clearlake Capital agreed in 2025 to buy it for about $7.7 billion including debt. The registry answers are self-reported and describe the registered unit, not the whole group.
Large registered brokers without public revenue
These companies are on the same registry and are often named among the biggest in the trade, but they don't publish revenue of their own that we could check, so we haven't ranked them.
From CalPrivacy's 2026 registry, downloaded 2026-11-09. Self-reported answers.
Acxiom LLC
- Kind of broker
- Marketing data
- What it told the registry
- Collects precise geolocation
Epsilon Data Management
- Kind of broker
- Marketing data
- What it told the registry
- None of the sensitive categories or listed recipients
Data Axle Inc.
- Kind of broker
- Marketing and business data
- What it told the registry
- Sold or shared data to a generative AI developer
The Nielsen Company; eXelate (Nielsen Marketing Cloud)
- Kind of broker
- Audience measurement and marketing data
- What it told the registry
- None of the sensitive categories or listed recipients
Lead Intelligence Inc. (InfutorData)
- Kind of broker
- Consumer identity data
- What it told the registry
- FCRA-covered; sold or shared data to a generative AI developer
People Data Labs
- Kind of broker
- Person and company records
- What it told the registry
- None of the sensitive categories or listed recipients
Foursquare Labs
- Kind of broker
- Location data
- What it told the registry
- Collects precise geolocation
Whitepages; Spokeo; Intelius; BeenVerified; TruthFinder
- Kind of broker
- People search
- What it told the registry
- Each registered under its own company name
What this means if you broker data
The biggest names here are consumer reporting agencies and analytics groups that collect personal information at national scale. Most new brokers do something different: they arrange licences between a company that holds a dataset and a company that wants it, often with no personal information involved at all.
That work doesn't compete with these firms, and many of their units are buyers of data themselves. If that is the business you are considering, start with how to become a data broker.
More about the largest data broker companies
Why top data broker lists disagree
- Different definitions. Privacy writers tend to list people-search sites, because those are the ones readers want to be removed from. Industry lists lean towards credit bureaus and marketing data firms. Both are data brokers under the state laws.
- No common revenue measure. Groups report total or segment revenue, never revenue from brokering personal data, so any ranking compares companies with very different mixes of business.
- Private companies. Many of the names that come up most often don't publish figures at all.
- Group structures. One group can register several units, and the registered name is often not the brand people know: TransUnion's six California registrations include the Neustar businesses it bought.
Sources
11 sources · checked Nov 9, 2026
The DataBroker team checked the facts on this page against 11 public sources, last on .
- 2026 California Data Broker Registry, CalPrivacyChecked
- S&P Global reports fourth quarter and full year 2025 results (Form 8-K)Checked
- Full-year results FY26, Experian plcChecked
- Moody's 4Q25 earnings releaseChecked
- Equifax delivers fourth quarter 2025 revenue growth of 9%Checked
- TransUnion Q4 2025 earnings releaseChecked
- RELX 2025 resultsChecked
- Dun & Bradstreet reports fourth quarter and full year 2024 financial resultsChecked
- Clearlake Capital Group to acquire Dun & Bradstreet in $7.7bn deal, Finance Director EuropeChecked
- ZoomInfo announces fourth quarter and full year 2025 financial results, Business WireChecked
- LiveRamp fiscal 2026 results (Form DEFA14A exhibit 99.1)Checked
The largest data broker companies FAQ
What is the biggest data broker?
It depends on what you count. By total reported revenue, S&P Global is the largest group with a unit on California's 2026 data broker registry. Among companies best known for consumer data, Experian, Equifax and TransUnion report the most revenue, though much of it comes from credit reporting.
Are Experian, Equifax and TransUnion data brokers?
Each has units registered as data brokers in California for 2026, alongside their credit bureau businesses, which the Fair Credit Reporting Act governs. Their registrations say so: several of their units report being FCRA-covered.
Is Acxiom still a data broker?
Acxiom LLC is on California's 2026 data broker registry and says it collects precise geolocation. It doesn't publish revenue of its own, so it isn't ranked here.
Why isn't my favourite list's top company here?
Either it doesn't publish revenue, or it isn't on California's registry. We only rank companies that meet both tests, so the order rests on their own published figures.
Related
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- California data broker registry and the Delete Act
The California data broker registry, run by the state privacy agency, sets yearly registration, a deletion platform every broker must check, and daily fines.
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