See which Supply-Side Platforms (SSPs) are driving the most programmatic ad impressions in Japan. Pixalate’s Q2 2025 SSP Market Share Reports rank sellers by their estimated share of programmatic ad impressions across web domains, mobile apps, and Connected TV (CTV) apps in Japan, highlighting leading SSPs like Verve, Index Exchange, Magnite, Google Ad Exchange, and more.
*Pixalate has not published a report covering China this quarter
Pixalate’s data science team compiles the SSP Market Share Reports by ranking programmatic advertising Supply-Side Platforms (SSPs) based on their estimated market share across platforms. The Q2 2025 edition, using June 2025 data, leverages Pixalate’s proprietary technology and methodology to estimate market share for 700+ SSPs. The analysis is primarily derived from buy-side open auction programmatic traffic sources.
Pixalate analyzes data from billions of programmatic advertising transactions. Sellers identified in this data are scored, and those exceeding predetermined traffic thresholds are ranked against other platforms based on the number of impressions associated with their SSPs.
Impressions flagged as IVT (invalid traffic) are excluded from these rankings. Additionally, countries with impressions below a minimum threshold are omitted to ensure a meaningful and accurate market share breakdown.
Pixalate analyzes advertising data from across the entire ad stack—from agencies and Demand-Side Platforms (DSPs) to SSPs, exchanges, and publishers. Where available, Pixalate also parses the OpenRTB SupplyChainObject (SCO), allocating market share credit to all sellers within an impression’s supply chain.
Many clients use our data analytics solution to gain insights into the advertising opportunities and impressions they traffic or receive. While client-specific data remains exclusive to that customer, aggregated datasets are used to produce our ratings.
I’ve heard that one company has higher quality inventory than another, but the rankings don’t reflect this—why not?
This report does not assess the “quality” of SSP inventory. Rankings are based solely on IVT-free impressions associated with each SSP.
For a qualitative analysis of sellers, see Pixalate’s Seller Trust Index.
Pixalate is a global platform for privacy compliance, ad fraud prevention, and data intelligence in the digital ad supply chain. Founded in 2012, Pixalate’s platform is trusted by regulators, data researchers, advertisers, publishers, ad tech platforms, and financial analysts across the Connected TV (CTV), mobile app, and website ecosystems. Pixalate is MRC-accredited for the detection and filtration of Sophisticated Invalid Traffic (SIVT).
Disclaimer: The content of this page reflects Pixalate’s opinions with respect to the factors that Pixalate believes can be useful to the digital media industry. Any proprietary data shared is grounded in Pixalate’s proprietary technology and analytics, which Pixalate is continuously evaluating and updating. Any references to outside sources should not be construed as endorsements. Pixalate’s opinions are just that - opinion, not facts or guarantees.
Per the MRC, “'Fraud' is not intended to represent fraud as defined in various laws, statutes and ordinances or as conventionally used in U.S. Court or other legal proceedings, but rather a custom definition strictly for advertising measurement purposes. Also per the MRC, “‘Invalid Traffic’ is defined generally as traffic that does not meet certain ad serving quality or completeness criteria, or otherwise does not represent legitimate ad traffic that should be included in measurement counts. Among the reasons why ad traffic may be deemed invalid is it is a result of non-human traffic (spiders, bots, etc.), or activity designed to produce fraudulent traffic.”
