Index Exchange
S · Core PlatformsProvides publishers with transparent, efficient access to premium demand through a fair marketplace built on header bidding technology, maximizing yield while maintaining control over inventory.
Last updated Feb 8, 2026
- Industry
- Ad Exchange / Supply-Side Platform (SSP)
- Business Model
- Marketplace
- Target Market
- Enterprise
- Employee Count
- 501-1000
- Funding
- $92M
- Revenue Range
- $200M-$500M
- Stock Symbol
- N/A
- Parent Company
- N/A
- API Available
- Yes
Market Position
Top-tier independent ad exchange, one of the largest SSPs globally
Overview
Index Exchange is a leading global advertising marketplace that connects premium media owners with advertisers through programmatic technology. Founded in 2001, the company operates one of the largest independent ad exchanges in the world, facilitating billions of ad transactions daily across display, video, mobile, and connected TV inventory. The platform is built on a transparent, server-side architecture that prioritizes publisher control and buyer access to premium inventory. Index Exchange serves as a critical infrastructure provider in the programmatic advertising ecosystem, enabling publishers to maximize their advertising revenue through header bidding technology and unified auction dynamics. The company differentiates itself through its focus on transparency, direct relationships with publishers, and commitment to a fair marketplace that benefits both supply and demand sides. With a global presence and partnerships with major publishers and demand-side platforms, Index Exchange has established itself as one of the top-tier ad exchanges alongside Google Ad Manager and other major players.
Products & Features
Index Marketplace
Core ad exchange platform connecting publishers with demand sources through real-time bidding
Header Bidding Solutions
Client-side and server-side header bidding technology for unified auctions
Prebid Server
Server-side header bidding solution reducing latency and improving page performance
Video Marketplace
Specialized marketplace for video advertising across web, mobile, and CTV
CTV Marketplace
Connected TV advertising marketplace for premium streaming inventory
Private Marketplace (PMP)
Tools for publishers to create and manage private marketplace deals with select buyers
Key Features
Server-side header biddingUnified auction technologyReal-time bidding infrastructurePublisher-first transparencyMulti-format support (display, video, native, CTV)Private marketplace capabilitiesAdvanced yield optimizationDirect integrations with major DSPsSupply path optimizationBrand safety controls
Use Cases
Publishers monetizing display advertising inventoryVideo publishers optimizing video ad revenueCTV and OTT platforms selling streaming ad inventoryMobile app publishers accessing programmatic demandPremium publishers running private marketplace dealsMulti-platform publishers managing unified yield optimizationPublishers implementing header bidding solutionsMedia companies seeking transparent programmatic partnerships
Customer Segments
Premium publishersDigital media companiesVideo publishersCTV and OTT platformsMobile app publishersNews and editorial publishersEntertainment and lifestyle publishersVertical-specific content sites