Technology answer

SpotX

84

companies run it, <0.01% of 54,527,857 in the index. Landing 12 Sept 2026.

Hosts: 185 live hosts run it, of 191,809,695 hosts in the index, <0.01%. A host is a website, not a company.

Companies by month

No published series

84 companies is under the publication floor of 1,000, and the fixed panel anchored at 31 Dec 2020 carries 35 of them. A monthly line drawn off that many observations would be noise at the same weight as a line off millions, so this page states the count and its date and publishes no series.

First discovered 10 Oct 2023, last discovered 10 Sept 2026.

Both denominators, and a third

Shares of the same 84each row a different wholelanding 12 Sept 2026

Denominator

Companies

Share

companies in the index

54,527,857

<0.01%

companies running anything in Advertising

15,368,013

<0.01%

companies running anything in Ad exchanges

300,091

0.03%

Three wholes, three shares of one count: a share travels with its whole, never alone. Against the last of them, SpotX is rank 12 of 19 technologies in Ad exchanges.

Open as a segment

84 companies; add a country, a sector or a band on the segment page. Counting is free.

/companies/tech-spotx

Open the segment

Catalogue record

As recorded in the cataloguetaxonomy release tax-2026.10last discovered 10 Sept 2026

SpotX is a sell-side video advertising platform and ad exchange operated by Magnite.

SpotX provides publishers with programmatic ad serving and exchange capabilities for video inventory. It helps media owners manage demand and monetize through an SSP.

Kindproduct

VendorMagnite, magnite.com

PathMarketing and Advertising > Advertising > Ad exchanges

Slugspotx

Deploymentsaas

Pricingquote based, enterprise

Open sourceno

First discovered2023-10-10

Last discovered2026-09-10

Taxonomy releasetax-2026.10

One click under this answer

Subcategory answerAd exchangesCompanies running anything in Ad exchanges, 300,091 of 54,527,857 in the index, and the technologies ranked in it.Category answerAdvertisingThe category above this one, with its subcategories and the companies in each.CatalogueAll 8,177 technologiesRanked by the companies running them, with the publication gate named and the long tail drawn.