Supply-chain sample
AdTech Supply-chain Presence
Up to 50 company domains ordered by recorded seller lines in our app-ads.txt sample.
636 companies with recorded data
- 1PubMatic1,756
- 2Magnite1,274
- 3Microsoft Advertising746
AdTech Company Rankings
Compare companies by recorded supply-chain presence and hiring activity. Each list shows its evidence, scope and limits.
AdTech Supply-chain Presence
- Qualifying companies
- 636
- Seller lines · listed companies
- 14,558
Highest recorded count: PubMatic — 1,756
Source checks (UTC):
Totals cover the displayed list (up to 50 domains), not all qualifying companies. Repeated seller lines count; this three-source sample is not market share or a quality rating. Current snapshot only; no historical comparison or growth claim.
AdTech Hiring Activity
- Qualifying companies
- 9
- Open roles · listed companies
- 390
Highest recorded count: PubMatic — 79
Source checks (UTC): –
Totals cover the displayed list (up to 50 domains), using cached active roles from monitored official boards. Check dates may differ; this is not the entire hiring market. Current snapshot only; no historical comparison or growth claim.
Official employer boards
AdTech Hiring Activity
Directory companies ordered by active, in-scope vacancies cached from monitored official employer boards.
9 companies with recorded data
- 1PubMatic79
- 2The Trade Desk76
- 3RTB House74
By company category
- SSPs & Exchanges155 companies with recorded data
- Demand-side Platforms192 companies with recorded data
- Ad Networks & Mediation124 companies with recorded data
- Video & CTV Companies35 companies with recorded data
- Data & Identity Companies10 companies with recorded data
- Measurement & Verification0 companies with recorded data
Methodology & limitations
Counts are valid seller entries fetched from public app-ads.txt files when this snapshot was loaded. Repeated entries are counted; domains are not merged by corporate group. This is a limited sample, not unique publishers, reach, revenue, market share or an endorsement. Snapshots are cached briefly; source-check dates are shown. Categories come from Directory profiles, not certification.
Counts include only active, relevant roles stored from monitored official employer boards, matched to ready Directory profiles by exact domain. This is not every employer or every vacancy. Sources refresh weekly; outages can leave older records. The source check date is shown for each company.