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Pixalate Releases Q3 2026 Mobile Seller Trust Index 2.0: 16.4% of Global Authorized Mobile App Inventory Is Resold Through Arbitrage, Up From 15.2% in Q2; <a href="https://myappsplus.com/ive-used-google-home-for-10-years-and-its-never-felt-so-frustrating/” title=”I've used Google Home for 10 years, and it's never felt so frustrating”>Google AdExchange Top-Ranked ‘Direct’ Seller in the US, Canada, Singapore; Mintegral No. 1 in Germany
Pixalate’s Mobile STI 2.0 rates sellers by arbitrage risk and invalid traffic (ad fraud) risk across 130+ markets, including USA, Canada, UK, Germany, France, Japan, Singapore, China, and Brazil; Google AdExchange, AppLovin, Liftoff, Mintegral among leaders
LONDON, Oct. 29, 2026 (GLOBE NEWSWIRE) — Pixalate, an ad fraud and privacy compliance platform, today released the Q3 2026 Mobile Seller Trust Index (STI) 2.0 rankings. Mobile STI 2.0 ranks 275+ open programmatic mobile app sellers across 130+ markets and fully differentiates between arbitraged vs. authorized publisher-direct inventory. The index is free, public, and updated quarterly.
For each seller in each country, the model measures:
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What Sellers Claim: How many publishers selling ads list the seller as DIRECT in their app-ads.txt file, as detected by Pixalate
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Verification of Seller Claims: The scale and ratio of a seller’s impressions that actually flowed through an authorized-direct path, per Pixalate’s SupplyChain Object (SCO) analysis
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Seller Arbitrage Risk: Independent Pixalate risk rating for selling >50% of inventory as a reseller
Arbitrage Trends in Mobile App (Q3 2026)
In global mobile app traffic, 16.4% of authorized inventory was resold rather than sold publisher-direct in Q3 2026, up from 15.2% in Q2 and roughly level with the 16.2% recorded in Q1. Mobile now sits below web (21.4%) and well above CTV (0.8%).
The share of ranked mobile sellers that are primarily arbitrageurs — reselling more than half of their measured inventory — rose from 29.5% to 34.2% globally, the highest level since the start of 2026 (Q1: 31.7%). In the United States, the share rose from 16% to 24% (Q1: 22%).
At the country level, the share of ranked SSPs that are primarily arbitrageurs rose in the United States (+8 pp), Spain (+7 pp), Brazil (+5 pp) and Germany (+4 pp), and fell in Singapore (−8 pp), Japan (−6 pp), France (−5 pp) and India (−5 pp).
Q3 2026 Mobile Seller Trust Index 2.0: Top Sellers in Select Countries
The following tables show the top-ranked sellers in select countries based on Mobile Seller Trust Index scores for Q3 2026. Full rankings for 130+ countries are available at pixalate.com.
United States
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‘DIRECT’ Publisher Penetration |
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