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Agency Marketplace/Japan/Septeni Holdings
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Septeni Holdings

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Japanese digital advertising group listed on Tokyo Stock Exchange

Tokyo, JapanEst. 1990(36yr)500–1000www.septeni-holdings.co.jp/en
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Est. 1990·Tokyo, Japan·500–1000 people·Min From $25,000·Japanese
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Contento. Editorial Assessment

Septeni Holdings is a Japanese digital advertising group founded in 1990 and part of dentsu Group. Operating one of Japan's largest digital advertising networks, Septeni specialises in social media advertising, performance marketing, and digital media for Japanese brands and advertisers. The company is publicly listed in Japan and runs both agency services and digital media properties, with a particular strength in social media advertising on platforms including X (Twitter), Instagram, and LINE.

Best For

  • Social media advertising in Japan
  • Performance digital marketing for Japanese brands
  • LINE and Japanese platform advertising
  • dentsu network digital capabilities
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Written by Contento. editors. Not supplied by Septeni Holdings.

About Septeni Holdings

Septeni Holdings is a Tokyo-based digital advertising group established in 1990, which transitioned from recruitment consulting into internet advertising in 2000. The company is publicly traded on the Tokyo Stock Exchange (TSE: 4293) and operates through its core Septeni subsidiary as a leading Japanese digital advertising agency. Septeni provides digital media planning, social media advertising, data-driven marketing, and performance advertising services, with particular strength in social media platforms. The company joined forces with Dentsu Group as a strategic partner, further strengthening its position in Japan's competitive digital advertising landscape. Headquartered in Shinjuku, Tokyo, Septeni Holdings serves Japanese brands and multinational advertisers seeking to reach Japanese consumers through digital and social media channels.

TSE listedJapandigital advertisingsocial mediaDentsu partner

Services

Digital Marketing
Social Media Marketing
Programmatic Advertising
Performance Marketing
Data Analytics
Facebook Ads

Industries Served

Consumer GoodsEcommerce & RetailTechnologyMedia & EntertainmentFinancial Services

Frequently Asked Questions

What is Septeni Holdings?

Septeni Holdings is a Japanese digital advertising company operating within the dentsu network. The company runs digital media advertising services and social media marketing, operating some of Japan's largest social advertising platforms.

Is Septeni publicly listed?

Yes, Septeni Holdings is listed on the Tokyo Stock Exchange. Following dentsu's increased stake, the company operates as a key digital arm of dentsu in Japan.

What makes Septeni strong in the Japanese market?

Septeni has deep expertise in Japan's unique social media ecosystem — particularly LINE, which dominates messaging in Japan, and local advertising platforms. This gives the company an advantage over international agencies that lack Japan-specific platform knowledge.

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Agency Details

Founded
1990
HQ
Tokyo, Japan
Team size
500–1000
Min project
From $25,000
Languages
Japanese

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