Viant Technology Inc.

Viant Technology Inc. (NASDAQ: DSP) is the publicly-traded independent demand-side platform that grew out of Specific Media, the people-based advertising business brothers Tim and Chris Vanderhook started in Irvine, California in 1999. The Adelphic-anchored DSP buys programmatically across CTV, streaming audio, digital out-of-home, mobile, and desktop; in Q3 2025, Connected TV crossed 46 percent of total platform ad spend for the first time, locking in the company’s CTV-first identity.

The 2026 thesis is consolidation of the measurement layer. Viant’s November 6, 2024 acquisition of IRIS.TV added the IRIS_ID contextual identifier alongside Household ID. The April 15, 2026 agreement to acquire TVision Insights for $40M ($22.5M cash plus $17.5M in Class A stock, closing expected Q2 2026) brings second-by-second eyes-on-screen attention data inside the DSP — a sequence AdExchanger characterized as Viant assembling an identity-context-attention stack that wouldn’t have been possible without the IRIS.TV deal landing first.

For our coverage of how the TVision deal collapses the neutral attention layer that iSpot, VideoAmp, and Oracle had all licensed from the same panel, see Viant Pulls TVision Inside the DSP, Collapsing the Neutral Attention Layer (April 2026).