Ad Tech 13Fs: Trade Desk, AppLovin, Magnite, PubMatic Decoded

US-traded ad tech equities form a distinctive advertising technology corner of institutional 13F positioning. The Trade Desk (TTD), AppLovin (APP), Magnite (MGNI), PubMatic (PUBM), Criteo (CRTO), plus Integral Ad Science (IAS, ad verification) anchor the cohort. Multi-year emerging Connected TV (CTV) growth, retail media networks, plus emerging emerging Google ad tech antitrust dynamics drive distinctive institutional positioning. Reading ad tech 13F positioning requires understanding the supply-vs-demand-side framework plus the multi-year category dynamics.

The ad tech business model

Ad tech companies operate four primary economic engines:

1. Supply-vs-demand-side. Multi-year emerging supply-vs-demand-side dynamics drives operator positioning. Multi-year emerging demand-side platforms (DSP) plus emerging emerging supply-side platforms (SSP) plus emerging emerging emerging emerging ad exchanges plus emerging emerging emerging emerging ad verification drive multi-year emerging emerging ecosystem economics. Multi-year emerging The Trade Desk DSP plus emerging emerging Magnite plus PubMatic SSP plus emerging emerging Criteo retail media plus emerging emerging IAS verification.
2. Connected TV growth. Multi-year emerging Connected TV (CTV) growth drives ad tech operator economics. Multi-year emerging CTV ad spending grew from $20B (2020) to $33B (2024) plus emerging emerging multi-year ramp to $50B+ by 2027. Multi-year emerging Netflix ads (launched Nov 2022) plus emerging emerging Amazon Prime Video ads (Jan 2024) plus emerging emerging Disney+ ads plus emerging emerging Max ads plus emerging emerging Paramount+ ads drive multi-year emerging emerging CTV inventory growth.
3. Retail media networks. Multi-year emerging retail media networks drives advertising operator economics. Multi-year emerging Amazon Ads ($50B+ 2024 estimated) plus emerging emerging Walmart Connect plus emerging emerging Kroger Precision Marketing plus emerging emerging emerging emerging Target Roundel plus emerging emerging emerging emerging Costco plus emerging emerging emerging emerging Best Buy plus emerging emerging emerging emerging emerging emerging emerging emerging Albertsons plus emerging emerging Macy's drive multi-year emerging retail media spending. Multi-year emerging emerging retail media reached $46B+ (2024) plus emerging emerging multi-year ramp to $100B+ by 2028.
4. Google ad tech antitrust emerging. Multi-year emerging Google ad tech antitrust dynamics drives multi-year emerging operator opportunity. Multi-year emerging US DOJ ad tech monopolization case (April 2025 ruling found Google liable on two counts of monopolization in ad server plus ad exchange) plus emerging emerging emerging remedy phase plus emerging emerging potential AdX plus DFP divestiture plus emerging emerging emerging EU Commission Google ad tech case drive multi-year emerging emerging ad tech competitive dynamics. Multi-year emerging emerging The Trade Desk plus Magnite plus PubMatic potential Google ad tech market share gain.

Major US ad tech names

The Trade Desk (TTD)

Largest independent DSP plus emerging emerging UID2 (Unified ID 2.0 identity solution) plus emerging emerging Kokai plus emerging emerging OpenPath direct supply plus emerging emerging Connected TV plus emerging emerging retail data plus emerging emerging audio plus emerging emerging digital out-of-home. Multi-year emerging Jeff Green founder-CEO leadership.

AppLovin (APP)

Diversified mobile gaming ad tech plus emerging emerging AppDiscovery plus emerging emerging MAX mediation plus emerging emerging Adjust attribution plus emerging emerging emerging emerging AI-driven ad targeting plus emerging emerging Axon AI engine. Multi-year emerging operational scaling plus emerging emerging Adam Foroughi founder-CEO leadership.

Magnite (MGNI)

Largest independent SSP plus emerging emerging SpotX plus emerging emerging SpringServe acquisition (2021) plus emerging emerging Connected TV plus emerging emerging Magnite Streaming plus emerging emerging Demand Manager. Multi-year emerging Michael Barrett CEO leadership.

PubMatic (PUBM)

Diversified SSP plus emerging emerging OpenWrap header bidding plus emerging emerging Connected TV plus emerging emerging Activate sell-side curation plus emerging emerging Rajeev Goel founder-CEO leadership.

Criteo (CRTO)

Diversified retargeting plus emerging emerging Commerce Media plus emerging emerging Commerce Growth plus emerging emerging Retail Media plus emerging emerging emerging emerging emerging emerging Megan Clarken CEO leadership.

Integral Ad Science (IAS)

Diversified ad verification plus emerging emerging brand safety plus emerging emerging viewability plus emerging emerging fraud detection plus emerging emerging emerging emerging emerging emerging Lisa Utzschneider CEO leadership.

How institutional managers position around ad tech

Three patterns appear across smart-money 13Fs:

Pattern 1: DSP-leadership concentration

TTD-concentrated growth manager positions reflect independent DSP leadership plus emerging emerging UID2 thesis.

Pattern 2: Mobile-gaming positioning

APP-concentrated growth manager positions reflect mobile gaming ad tech plus emerging emerging Axon AI thesis.

Pattern 3: Google-antitrust positioning

MGNI, PUBM-concentrated active manager positions reflect potential Google ad tech market share gain thesis.

How to read ad tech 13F positioning

Three rules apply:

Rule 1: Identify segment exposure

DSP vs SSP vs verification have distinct dynamics.

Rule 2: Watch take-rate

Multi-year take-rate drives operator revenue.

Rule 3: Cross-check CTV dynamics

Multi-year CTV drives long-term operator growth.

What ad tech positioning signals

1. DSP-leadership conviction. Concentrated TTD positions signal DSP leadership thesis.
2. Mobile-gaming conviction. Concentrated APP positions signal mobile gaming ad tech thesis.
3. Antitrust-opportunity conviction. Concentrated MGNI, PUBM positions signal Google ad tech market share thesis.

For real-time tracking of ad tech 13F activity, see the institutional signals feed.