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Technology answer

DoubleClick Ad Exchange (AdX)

27,019

companies run it, 0.05% of 54,527,857 in the index. Landing 12 Sept 2026.

Hosts: 746,051 live hosts run it, of 191,809,695 hosts in the index, 0.39%. A host is a website, not a company.

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Companies by month

Companies, monthly, on the fixed panel of sites crawled since 2020of 54,527,857 in the indexlanding 12 Sept 2026

27,019 at Sept 26; 27,937 twelve months earlier, -918, -3.3% on the fixed panel; the series starts January 2021 because the panel is anchored at 31 Dec 2020

The 69 numbers in this chart
MonthCompaniesObserved on the panel
2021-0126,2446,069
2021-0226,2436,068
2021-0326,2436,068
2021-0426,2436,068
2021-0526,2436,068
2021-0626,2436,068
2021-0726,2436,068
2021-0826,2566,071
2021-0926,2626,073
2021-1026,2686,074
2021-1126,2746,076
2021-1226,2806,077
2022-0126,2856,078
2022-0226,2916,080
2022-0326,2976,081
2022-0426,3046,083
2022-0526,3106,084
2022-0626,3176,086
2022-0726,3246,087
2022-0826,3306,089
2022-0926,3246,087
2022-1026,3256,087
2022-1126,3276,088
2022-1226,3286,088
2023-0126,3286,088
2023-0226,3306,089
2023-0326,3326,089
2023-0426,5766,145
2023-0526,5766,145
2023-0626,5766,145
2023-0726,5776,146
2023-0826,5776,146
2023-0926,5776,146
2023-1026,5776,146
2023-1126,5776,146
2023-1226,5766,145
2024-0126,5766,145
2024-0226,5766,145
2024-0326,6766,169
2024-0426,7236,179
2024-0526,5276,134
2024-0626,5756,145
2024-0726,6236,156
2024-0826,6736,168
2024-0926,7866,194
2024-1026,9136,223
2024-1127,0426,253
2024-1227,1556,279
2025-0127,3176,317
2025-0227,4486,347
2025-0327,5806,378
2025-0427,6236,388
2025-0527,7026,406
2025-0627,7966,428
2025-0727,8796,447
2025-0827,9616,466
2025-0927,9376,460
2025-1027,8506,440
2025-1127,7496,417
2025-1227,6466,393
2026-0127,5626,373
2026-0227,5016,359
2026-0327,5056,360
2026-0427,4606,350
2026-0527,3936,334
2026-0627,3356,321
2026-0727,2446,300
2026-0827,1446,277
2026-0927,0196,248

Both denominators, and a third

Shares of the same 27,019each row a different wholelanding 12 Sept 2026

Denominator
Companies
Share
companies in the index
54,527,857
0.05%
companies running anything in Advertising
15,368,013
0.18%
companies running anything in Ad exchanges
300,091
9.0%

Three wholes, three shares of one count: a share travels with its whole, never alone. Against the last of them, DoubleClick Ad Exchange (AdX) is rank 2 of 19 technologies in Ad exchanges.

Open as a segment

27,019 companies; add a country, a sector or a band on the segment page. Counting is free.

/companies/tech-doubleclick-ad-exchange-adx

Open the segment

Catalogue record

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

DoubleClick Ad Exchange (AdX) is Google’s programmatic ad exchange for publishers and buyers.

AdX enables real-time bidding and programmatic trading of display inventory, now part of Google Ad Manager. Publishers and demand partners use it to buy and sell ad impressions at scale.

Kindproduct
VendorGoogle, google.com
PathMarketing and Advertising > Advertising > Ad exchanges
Slugdoubleclick-ad-exchange-adx
Deploymentsaas
Pricingusage based, quote based
Open sourceno
First discovered2019-10-04
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.