Syndicated research is market or audience data that a research company designs, collects and pays for itself, then licenses to many clients at once. Nielsen's television ratings, NIQ and Circana retail sales data, MRI-Simmons and GWI consumer surveys, and Kantar's Target Group Index (TGI) all work this way. No single buyer commissions the study or owns the results. The model exists because large, representative studies are expensive, and splitting the cost across dozens or hundreds of subscribers makes data affordable that no one advertiser, agency or publisher would fund alone.

The opposite is custom research, in which one client commissions a study, sets the questions and keeps the findings. Greenbook's September 2024 guide sets out the contrast: syndicated data is "generic research provided by firms for multiple clients", cheaper and faster to obtain, while custom work is tailored, exclusive and slower.

How syndicated research works

The supplier fixes the design in advance: sample, questions, fieldwork schedule and weighting. Clients buy access, usually through annual subscriptions priced by dataset, market and number of users.

Four collection methods dominate. Consumer surveys ask a large sample about media habits, brand usage, attitudes and demographics. MRI-Simmons USA, formed when MRI's Survey of the American Consumer merged with Simmons' National Consumer Study, recruits respondents through address-based probability sampling and collects product data in a self-completion questionnaire. According to a 2021 MRI-Simmons FAQ, the converged study interviewed about 30,000 adults a year in two six-month waves, with quarterly data releases. GWI runs an online survey across 53 markets, fielded quarterly since 2013, according to its methodology documentation.

Purchase panels record what households actually buy. The National Consumer Panel, a joint venture of NIQ and Circana formerly known as Homescan, has members scan barcodes on their shopping and send the data weekly. Manufacturers use it to calculate penetration rate, purchase frequency and brand loyalty.

Retail tracking collects point-of-sale data from stores, the business Arthur C. Nielsen started in 1933. Media meters record what a household's television or devices tune to, the foundation of audience measurement and of the ratings used as currency in television trading.

Subscribers then query the data with tabulation software. A planner might define a target of adults aged 25 to 44 who bought running shoes in the past year, then read their media habits. The standard output is an index: the share of the target doing something divided by the share of all adults doing it, multiplied by 100. If 30% of the target listens to podcasts weekly against 20% of all adults, the index is 150, meaning the target is 50% more likely to listen. Planners use indices above 100 to select channels and titles.

Survey data now also enters the bidstream. On May 7, 2026, MRI-Simmons and Experian expanded a partnership to offer research-based segments in Experian's data marketplace. According to the joint announcement, MRI-Simmons insights are not activated directly; Experian builds modelled audiences from them. The same pattern appears in DeepIntent's October 2026 addition of 131 survey-based healthcare audiences from Tunnl, where most people in each segment were never surveyed.

Who sells it and who buys it

The supply side is concentrated. Nielsen dominates US television measurement, holding 85% to 90% of a national market worth $1.5 billion to $2 billion a year, figures cited in PPC Land's coverage of datafuelX. NIQ and Circana lead retail and household panel data. Comscore reports a "Syndicated Audience" segment, which brought in $55.2 million in the second quarter of 2026, down 13.6%. Fifty5Blue, the former Kantar Media, owns TGI. MRI-Simmons and GWI sell consumer profiling.

Buyers sit on both sides of the market. Media agencies use the data to define targets and choose channels; PPC Land's explainer on the planner role notes that a typical media plan defines its audience "against a syndicated research source". Publishers use the same studies to show that their audiences over-index on valuable categories. Brand insight teams track market share and category trends.

Origin and evolution

Arthur C. Nielsen founded his company in Chicago in 1923 and launched a drug and retail store sales index in 1933, according to Nielsen's corporate history. The Nielsen Radio Index followed in 1942 and the Nielsen Television Index in 1950. The National Purchase Diary Panel, later NPD, was incorporated on September 28, 1966.

The British Market Research Bureau developed TGI in 1969 as a year-long survey linking media consumption and product usage in one sample. In the United States, Mediamark Research was founded in 1979 by Alain Tessier, Timothy Joyce and Philip Wenig, starting from a hotel suite, according to an NIQ tribute to Tessier. Information Resources Inc. (IRI), which built its business on supermarket scanner data, was founded the same year.

The internet produced a second generation. Comscore was founded in July 1999 by Gian Fulgoni and Magid Abraham to measure online behaviour through a software panel, and it merged with Rentrak on February 1, 2016. GlobalWebIndex, now GWI, was founded in London in 2009 by Tom Smith.

The past seven years have been defined by consolidation. GfK's MRI and Simmons, rivals for decades, combined as MRI-Simmons in 2019; the Media Rating Council (MRC) re-accredited the Survey of the American Consumer in February 2020, according to MediaPost. Nielsen sold its consumer-goods business, which became NielsenIQ in 2021. NIQ completed its combination with GfK on July 11, 2023, and today MRI-Simmons is a joint venture majority-owned by NIQ. IRI and NPD adopted the name Circana in March 2023. NIQ priced its initial public offering at $21 a share on July 22, 2025, raising more than $1 billion on the New York Stock Exchange. H.I.G. Capital bought Kantar Media in August 2025 and relaunched it as Fifty5Blue on February 25, 2026.

Why it matters for marketers

Syndicated data gives buyers and sellers a common reference. When an agency and a publisher argue about whether a magazine reaches affluent parents, both can open the same MRI-Simmons tables. When a TV network guarantees an audience, the guarantee is measured by a syndicated rating.

It also shapes the industry's public narrative. A Video Advertising Bureau (VAB) report that put ad-supported streaming at 210 million US viewers drew heavily on MRI-Simmons survey waves, including a March 2026 finding that 59% of US adults describe themselves as cordless. GWI data surfaces in reports such as Digital 2026, which used it to show conventional search engine use falling to 80% of online adults.

ESOMAR valued the traditional market research sector at US$56 billion in 2024, about 31% of it subscription-based and research software services, according to Research World. That category is the closest published proxy for syndicated research.

Limitations and disputes

The model's strengths create its weaknesses. Every subscriber sees the same data, so a rival can buy the identical tables. Questions are fixed by the supplier, so a brand with an unusual category may find nothing relevant.

Sample sizes shrink quickly once targets are narrowed. A survey of 30,000 adults can leave only a few hundred respondents in a niche segment in one region, with wide margins of error. Surveys also record claimed behaviour, which may differ from what people actually do.

Methodology is contested. In September 2021 the MRC suspended accreditation of Nielsen's national and local TV services after identifying underreported viewing; national accreditation returned on April 17, 2023. In 2026 the VAB accused Nielsen of suppressing February Gauge data. Vendors also compete by attacking each other's designs: GWI's own comparison page contrasts its 80,000-person annual US sample with what it describes as MRI-Simmons' 50,000-plus, a vendor-published comparison that has not been independently verified.

Panels face competition from census data. Comscore's local TV product uses device data from millions of households across all 210 US markets rather than a panel-only approach, a design that drew more than 15 broadcasters, including Sinclair, in April 2026. Finally, the conversion of surveys into targetable segments raises a validation problem: modelled audiences inherit any bias in the survey, and suppliers rarely publish accuracy figures. Advertisers surveyed by the Coalition for Innovative Media Measurement (CIMM) and the 4As named methodology transparency a major barrier, according to a March 2026 study.

Not the same as

Custom research is commissioned and owned by one client. A company can buy both: syndicated data to size a market, custom work to test its own campaign. Brand lift studies, for example, are usually custom.

Syndication in publishing and search means licensing content or ads for redistribution by third parties. It involves no research.

Secondary research is the use of any existing data, including government statistics and published reports. Syndicated data is one source of secondary research, but most secondary sources are free and not built for commercial subscribers.

Analyst research from firms such as Gartner and Forrester is also sold by subscription to many clients, and is sometimes called syndicated. It consists mainly of expert reports and vendor evaluations rather than consumer or audience datasets.

Recent developments

Syndicated suppliers are moving towards new data sources and AI. On September 2, 2026, NIQ and Similarweb announced a measurement product for shopping through ChatGPT, Gemini and other assistants, with a first version due in the fourth quarter of 2026. Comscore, under revenue pressure, announced on August 11, 2026 a restructuring expected to cut annual run-rate costs by $20 million to $25 million. Nielsen agreed on August 6, 2026 to acquire DoubleVerify for about $2.15 billion, and ended stand-alone panel-based TV ratings in favour of a big data and panel hybrid. Survey and panel studies increasingly serve as the calibration layer, with scale coming from device, retail and platform data.

Timeline

  • 1923: Arthur C. Nielsen founds his company in Chicago
  • 1933: Nielsen launches a drug and retail store sales index
  • 1942: Nielsen Radio Index launches
  • 1950: Nielsen Television Index begins in the US
  • September 28, 1966: National Purchase Diary Panel (later NPD) incorporated
  • 1969: British Market Research Bureau develops the Target Group Index
  • 1979: Mediamark Research (MRI) and Information Resources Inc. founded
  • July 1999: Comscore founded in Reston, Virginia
  • 2009: GlobalWebIndex founded in London
  • 2013: GWI Core moves to quarterly fieldwork
  • February 1, 2016: Comscore completes its merger with Rentrak
  • 2019: MRI and Simmons combine as MRI-Simmons
  • February 2020: MRC re-accredits the Survey of the American Consumer
  • 2021: Nielsen's consumer-goods business becomes NielsenIQ
  • September 1, 2021: MRC suspends accreditation of Nielsen national and local TV services
  • March 2023: IRI and NPD adopt the name Circana
  • April 17, 2023: MRC reinstates Nielsen national TV accreditation
  • July 11, 2023: NIQ and GfK complete their combination
  • July 22, 2025: NIQ prices its initial public offering at $21 a share
  • August 2025: H.I.G. Capital completes its acquisition of Kantar Media
  • February 25, 2026: Kantar Media relaunches as Fifty5Blue
  • April 21, 2026: Comscore announces local measurement agreements with more than 15 broadcasters
  • May 7, 2026: MRI-Simmons and Experian expand research-based audiences in Experian's marketplace
  • August 6, 2026: Nielsen agrees to acquire DoubleVerify
  • August 11, 2026: Comscore announces a restructuring to cut $20 million to $25 million in annual costs
  • September 2, 2026: NIQ and Similarweb announce agentic commerce measurement
  • October 7, 2026: Tunnl's 131 survey-based audiences reach DeepIntent

Summary

Who: Research companies such as Nielsen, NIQ, Circana, Comscore, Fifty5Blue, MRI-Simmons and GWI produce syndicated studies; media agencies, publishers, broadcasters, brands and trade bodies subscribe to them; the Media Rating Council accredits some of them in the United States.

What: Market and audience data designed and funded by a supplier and licensed to many clients at once, including consumer surveys, household purchase panels, retail sales tracking and media ratings, as opposed to custom research owned by one client.

When: The model dates to Nielsen's retail index of 1933, expanded with radio and TV ratings in 1942 and 1950, consumer surveys such as TGI in 1969 and MRI in 1979, and online panels from 1999. Consolidation since 2019 has produced MRI-Simmons, NIQ-GfK, Circana and Fifty5Blue.

Where: In media planning tools, TV trading, retail category management and, increasingly, programmatic data marketplaces where survey findings are modelled into targetable segments.

Why: Large representative studies are too costly for most single buyers. Sharing the cost gives the market a common reference for sizing audiences and pricing media, at the price of non-exclusive insight, fixed questions, small niche samples and recurring disputes over methodology.