KDDI Corporation provides mobile telecommunications services in Japan and internationally. It operates in two segments: Personal Services and Business Services. The Personal Services segment offers 5G telecommunications and other services, including finance, energy, and LX, through its multi-brands au, UQ mobile, and povo, as well as entertainment services such as video and games to individual customers. The Business Services segment provides smartphones and other devices, network and cloud services, and data center services to corporate customers under the TELEHOUSE brand. It also offers solutions for business development and expansion through IoT, DX, generative AI, and other technologies centered on 5G communications. The company was incorporated in 1984 and is headquartered in Tokyo, Japan.
KDDI Expands Connected-Car and Stablecoin Pilots, but Data Leak and Quake Hit
▼
Massive email/password leak confirmed KDDI confirmed 12.23 million email addresses and 7.62 million passwords leaked from its email system. This raises the risk of customer loss, fines, and repair costs, weighing on the share price.
A large security breach directly threatens KDDI's reputation and costs, a key negative force on the stock.
▲
BMW connected-car deal with Verizon KDDI's platform will manage 5G/LTE connectivity for new BMW and MINI cars in the U.S. via Verizon. This adds a major automaker client, supporting future service revenue and showing KDDI's global reach.
A new international contract expands KDDI's high-value connected-car business, a positive growth driver.
▲
Stablecoin payment pilot at Lawson KDDI and Lawson will test Japan's first in-store stablecoin payment using JPYC at a KDDI-operated store. Success could open new payment revenue and position KDDI in digital finance.
This pilot shows KDDI testing a new technology that could become a future revenue stream, a positive innovation signal.
▼
Kumamoto earthquake disrupts mobile service Power outages and transmission failures from the Kumamoto earthquake left KDDI and rivals' mobile services down in parts of the prefecture, with no restoration timeline. This adds repair costs and short-term customer inconvenience.
A natural disaster causing network outages directly hurts KDDI's operations and may require costly repairs, a negative event.
Q3 2026
▲2▼2
KDDI Expands Connected-Car and Stablecoin Pilots, but Data Leak and Quake Hit
▼
Massive email/password leak confirmed KDDI confirmed 12.23 million email addresses and 7.62 million passwords leaked from its email system. This raises the risk of customer loss, fines, and repair costs, weighing on the share price.
A large security breach directly threatens KDDI's reputation and costs, a key negative force on the stock.
▲
BMW connected-car deal with Verizon KDDI's platform will manage 5G/LTE connectivity for new BMW and MINI cars in the U.S. via Verizon. This adds a major automaker client, supporting future service revenue and showing KDDI's global reach.
A new international contract expands KDDI's high-value connected-car business, a positive growth driver.
▲
Stablecoin payment pilot at Lawson KDDI and Lawson will test Japan's first in-store stablecoin payment using JPYC at a KDDI-operated store. Success could open new payment revenue and position KDDI in digital finance.
This pilot shows KDDI testing a new technology that could become a future revenue stream, a positive innovation signal.
▼
Kumamoto earthquake disrupts mobile service Power outages and transmission failures from the Kumamoto earthquake left KDDI and rivals' mobile services down in parts of the prefecture, with no restoration timeline. This adds repair costs and short-term customer inconvenience.
A natural disaster causing network outages directly hurts KDDI's operations and may require costly repairs, a negative event.
News & notes moving9433.JP
JapanUnited States
Digital Finance & Tokenization▲
Behind Metaplanet's securities acquisition, FSA support for stablecoin pilot, and 3 more stories
Metaplanet acquired former Siiibo Securities, which handles privately placed corporate bonds, for 210 million yen and changed its name to Metaplanet Securities in July; the subsidiary securities firm recounted the two months leading up to the acquisition. On September 29, the Financial Services Agency announced it would support a pilot program using stablecoins for trade settlement, with six companies participating: TradeWaltz, NTT Data, Mizuho Bank, MUFG Bank, Sumitomo Mitsui Banking Corporation, and Mitsubishi UFJ Trust and Banking. On September 28, Coinbase announced on X that it will soon offer a service allowing users to open Pokémon card packs on smartphones. On October 2, Metaplanet corrected a total of four documents including previously filed annual securities reports, revising a statement that CEO Simon Gerovich indirectly holds a majority of voting rights in shareholder MMXX Ventures Limited to clarify that he does not hold a majority. On September 30, KDDI, au Coincheck Digital Assets, and HashPort announced they will begin offering the crypto asset wallet αU wallet as a mini app within the au PAY app.
3350.JP · Capital · Neutral Metaplanet acquired Siiibo Securities for 210 million yen and renamed it Metaplanet Securities, an M&A event.
3350.JP · Regulation · Negative Metaplanet corrected four documents, including annual securities reports, over a misstated CEO voting-rights disclosure.
9433.JP · Technology · Positive KDDI, with au Coincheck and HashPort, will offer the αU wallet as a mini app inside the au PAY app.
au Coincheck Digital Assets · Technology · Positive au Coincheck Digital Assets will offer the αU wallet crypto asset wallet as a mini app inside the au PAY app.
HashPort Group Inc. · Technology · Positive HashPort will launch the αU wallet crypto asset wallet as a mini app within the au PAY app.
8316.JP · Regulation · Positive MUFG Bank, part of the group, is one of six companies participating in the FSA-backed stablecoin trade-settlement pilot.
KDDI to Scale Back Roaming for Rakuten Mobile from October in 18 Designated Cities and Elsewhere
KDDI announced on the 30th the areas where it will provide its mobile phone network to Rakuten Mobile, known as roaming, from October onward, revealing that it will significantly reduce coverage in 18 designated cities including Yokohama, Kobe and Sendai. In the affected areas, Rakuten Mobile's service may become difficult to connect. In addition to the 18 designated cities, excluding Osaka and Nagoya where coverage had already been reduced, core cities such as Asahikawa in Hokkaido will also be subject to the reduction. For regional areas where Rakuten Mobile's base station rollout has lagged, KDDI says it will cooperate in maintaining infrastructure for a certain period, on the major premise that Rakuten Mobile will carry out the buildout itself.
4755.JP · Supply · Negative KDDI will significantly reduce roaming coverage in 18 designated cities and other areas from October, making Rakuten Mobile's service harder to connect.
9433.JP · Supply · Neutral KDDI scales back the network capacity it supplies to Rakuten Mobile, but also agrees to help maintain regional infrastructure for a period.
KDDI and Two Partners to Launch Crypto Asset Wallet 'αU wallet' in au PAY App
KDDI, au Coincheck Digital Assets, and HashPort announced on September 30 that they will begin offering the crypto asset wallet "αU wallet" as a mini app within the au PAY app. It will be available to users who have completed identity verification with au PAY, and it will be a non-custodial type in which users manage their own private keys. Ponta points can be exchanged for wrapped Bitcoin, Ethereum, and the Japanese yen stablecoin JPYC, with no crypto asset account required and an exchange limit of 300 Ponta points per month. Purchases in Japanese yen are also possible, moving through Coincheck's Coincheck OnRamp into the Coincheck app to buy WBTC and ETH. There is no purchase limit on this service itself, but restrictions may apply under Coincheck's terms of use and other rules, and a separate Coincheck account registration will be required. Held WBTC, ETH, and JPYC can be charged to an au PAY balance and used at au PAY merchants nationwide, and the balance after charging becomes au PAY Money Light, a third-party prepaid payment instrument under the Funds Settlement Act. Planning and operation will be handled by au Coincheck Digital Assets, a joint venture established in May 2026 by KDDI, au Financial Holdings, and Coincheck, and users of au PAY point investment reportedly exceed 7 million in total. The αU wallet app, which KDDI has offered since March 2023, will end on October 30.
Digital Finance & Tokenization › Payments Modernization & Rails Technology
9433.JP · Technology · Positive KDDI launches the αU wallet crypto wallet as a mini app in au PAY, a new product offering for its users.
au Coincheck Digital Assets · Technology · Positive The joint venture plans and operates the new αU wallet, the subject of the announcement.
CNCK · Demand · Positive Coincheck's OnRamp is the purchase channel for WBTC/ETH in the new αU wallet, expanding its crypto service reach to au PAY users.
Kakaku.com and KDDI End Capital Alliance, Business Tie-Up to Continue
Kakaku.com announced on the 28th that it will dissolve its capital alliance with KDDI. While the agreement concerning the acceptance of director candidates nominated by KDDI will lapse, the two companies have agreed to continue their business partnership, and KDDI will maintain its position as the second-largest shareholder, holding 17.70 percent of Kakaku.com's outstanding shares. The two companies concluded a capital alliance agreement in August 2018, and after repeated discussions over changes in capital structure, including the ongoing tender offer for Kakaku.com shares, and over future management policy, they agreed this time to a amicable dissolution. The outside director dispatched by KDDI has already retired upon the conclusion of the ordinary general meeting of shareholders held in June. Business cooperation will continue, including joint development and provision of new services and collaboration and coordination to promote the internet advertising and digital marketing businesses. Kakaku.com said the direct impact of the dissolution of the capital alliance on its consolidated results for the fiscal year ending March 2027 will be minor.
2371.JP · Capital · Neutral Kakaku.com dissolves its capital alliance with KDDI, though KDDI keeps its 17.70% stake and business partnership continues, with only minor impact on results.
9433.JP · Capital · Neutral KDDI ends its capital alliance with Kakaku.com and lets its director nomination agreement lapse, but retains its 17.70% shareholding and continues business cooperation.
LINE Yahoo raises Kakaku.com tender offer price to 3,720 yen
LINE Yahoo announced on the 16th that it will raise the price of its proposed tender offer for Kakaku.com from 3,640 yen per share to 3,720 yen. This is the purchase price if it secures the cooperation of KDDI, Kakaku.com's major shareholder; if that cooperation is not obtained, the price has been raised from 3,520 yen per share to 3,597 yen. Regarding Kakaku.com, the European investment firm EQT is already conducting a tender offer, and on the 10th EQT extended its tender offer period to September 29 and raised its purchase price from 3,571 yen per share to 3,680 yen.
KDDI and JR West SC Development Develop Market Analysis AI
KDDI announced on the 20th that it has developed an artificial intelligence service for market analysis in collaboration with JR West SC Development, a subsidiary of JR West. The two companies will jointly build an AI-powered market analysis framework aimed at understanding regional characteristics.
Japan's privacy watchdog issues administrative guidance to KDDI over leak of 12.23 million people's data
The Personal Information Protection Commission announced on the 19th that it has issued administrative guidance to KDDI over unauthorized access to the company's email system that leaked personal information on approximately 12.23 million people. The commission pointed out that KDDI failed to take measures to limit the spread of damage from the unauthorized access, and demanded a report on any secondary damage and on measures to prevent recurrence. It also issued administrative guidance to businesses that used the email system, citing inadequate management practices such as storing personal information without encryption, and called for improvements. According to the commission, multiple businesses were hit by unauthorized access in June, resulting in the leak of personal information on about 12.23 million people, but no secondary damage from the leak has been confirmed.
Cybersecurity & Digital Trust › Data Security & Cyber Resilience ▼Regulation
9433.JP · Regulation · Negative Japan's privacy watchdog issued administrative guidance to KDDI over a data leak affecting 12.23 million people, citing failure to limit damage and demanding improvements.
Oasis says it will not support buyout offer below 3,640 yen per share for Kakaku.com
Hong Kong fund Oasis Management said on the 19th that among multiple buyout proposals for Kakaku.com, in which it holds about 19.5% of shares, the tender offer of up to 3,640 yen per share currently proposed by the LINE Yahoo consortium is the best option for minority shareholders. It also said that as long as the price of the rival tender offer by European investment firm EQT, at 3,570 yen, is below the LINE Yahoo camp's offer, it has no intention of tendering its shares to EQT. Kakaku.com has expressed support for EQT's buyout proposal, and on the 13th the price was raised from 3,450 yen to 3,570 yen per share. LINE Yahoo, teaming up with US investment fund Bain Capital, set the purchase price at 3,520 yen per share if it launches a tender offer for Kakaku.com, and at 3,640 yen if it signs an agreement under which major shareholder KDDI will not tender. LINE Yahoo has made Kakaku.com's expression of support a condition for launching the tender offer. KDDI has already signed a non-tender agreement with EQT, and can tender to a rival offer only if that rival offer is launched at a price more than 2% above EQT's tender offer price. For this reason, Kakaku.com regards the 3,640 yen price as unfeasible, but Oasis said that if EQT's tender offer fails, the main obligations under the existing contract would lapse, making a tender offer at 3,640 yen feasible. It also called on Kakaku.com to take steps such as withdrawing its support for EQT's proposal.
KDDI to end roaming provision to Rakuten at the end of September
KDDI President Hiroji Matsuda revealed on the 7th a policy to terminate the current contract for providing mobile network roaming to Rakuten Mobile at the end of September. From October onward, provision in urban areas will be discontinued, while it will continue for a certain period only in some rural areas where Rakuten's base station deployment is lagging. This is to focus on improving communication quality for its own brand users, and President Matsuda stated, "The network is experiencing more congestion than expected. Ending the contract will resolve this." KDDI has been providing roaming to Rakuten since October 2019, but due to delays in Rakuten's 5G base station deployment, the termination of provision may lead to a decline in communication quality.
Nokia Insiders Buy Shares as Nvidia Partnership Fuels AI Network Ambitions
Nokia insiders have been quietly accumulating shares, signaling confidence in the company's AI-driven network strategy backed by a $1 billion investment from Nvidia. In late May, Victoria Hanrahan, chief of staff to the CEO, bought 44,682 shares on the NYSE at an average price of about $15.81 per share, a purchase worth just over $700,000. On July 24, senior manager Patrik Hammarén acquired 43,293 shares in Helsinki at around 8.44 euros, board member Timo Ihamuotila picked up 60,000 shares across multiple European venues at roughly 8.45 euros, and senior manager Pallavi Mahajan bought 62,000 shares on the NYSE at about $9.55. The buying spree follows Nokia's October 2025 strategic partnership with Nvidia to pioneer an AI platform for 6G, which includes Nvidia's $1 billion equity investment at $6.01 per share and plans to integrate Nvidia GPUs into Nokia's base stations. T-Mobile US has agreed to trial Nokia's AI RAN designs starting in 2026, and Nokia is building an AI RAN center in Dallas with partners like KDDI and SoftBank to develop AI-powered radio networks.
EQT Extends Tender Offer for Kakaku.com Again to August 17
European investment firm EQT announced on the 31st that it has extended the tender offer period for Kakaku.com from the previous deadline of August 3 to August 17. EQT launched the tender offer on May 13, and on July 17 raised the offer price from 3,000 yen to 3,450 yen per share while extending the period from July 22 to August 3. Meanwhile, LINE Yahoo, which has also made a takeover proposal, announced on the 29th that it would raise its offer price to 3,520 yen per share in partnership with US investment fund Bain Capital if it proceeds with a tender offer, and that the price would be raised from 3,500 yen to 3,640 yen per share if major shareholder KDDI agrees not to tender its shares. Kakaku.com's closing price on the 31st was 3,690 yen, up 0.22 percent from the previous trading day.
Mobile Service Disruptions Continue After Kumamoto Earthquake; Convenience Stores and Gas Stations Temporarily Closed
Mobile phone service disruptions and temporary closures of convenience stores and gas stations continued on the 29th following the earthquake that registered a maximum seismic intensity of 7 in Kumamoto Prefecture. NTT Docomo, KDDI, SoftBank, and Rakuten Mobile reported that calls and data services remain unavailable in parts of the prefecture due to power outages at base stations and transmission line failures, with no timeline for restoration. Major convenience store operators Seven-Eleven Japan, Lawson, and FamilyMart have temporarily closed a total of over 100 stores in the prefecture due to power outages and worsening road conditions, and are rushing to resume operations while providing relief supplies to disaster victims. According to the Ministry of Economy, Trade and Industry, 18 gas stations in the affected areas had suspended operations as of 1 p.m. on the 29th, with another 101 stations under status confirmation, impacted by the suspension of shipments from two oil terminals in Yatsushiro City. Japan Post has halted all counter services and Yu-Pack parcel handling in the prefecture, and Nippon Express has also suspended cargo acceptance and collection and delivery across wide areas of the prefecture.
KDDI and Partners Launch NFT Project to Protect Endangered Seagrass in Ishigaki Island
Okinawa Cellular Telephone, KDDI, and Tokio Marine Asset Management have launched the Ishigaki Island Future Seagrass Bed Project, which uses NFTs to protect the endangered seagrass species known as sea vine on Ishigaki Island. A portion of the funds from digital art purchases will be channeled into seagrass bed restoration activities, and support histories will be recorded on the blockchain to visualize the ongoing relationship between supporters and the local community. The digital art will be sold on an online store operated by Okinawa Cellular from July 16 to September 30, priced between 2,000 yen and 30,000 yen. Depending on the purchase plan, benefits include having the supporter's name printed on T-shirts worn by children participating in conservation activities, a tour of a Euglena factory, and the placement of name tags on protective fences. According to the three companies, this is the first initiative in Japan to simultaneously advance the conservation of endangered species and support for artists with disabilities using blockchain technology.
9436.JP · Demand · Positive Okinawa Cellular is a direct partner and operator of the online store selling NFTs, potentially driving customer engagement and revenue.
9433.JP · Technology · Positive KDDI is a partner in a blockchain-based NFT project for conservation, showcasing its technology capabilities.
BMW launches connected car service in the U.S. with Verizon and KDDI
BMW Group has launched a new connected vehicle platform in the U.S. in partnership with Verizon and KDDI, bringing 5G and IoT connectivity directly into newly manufactured BMW vehicles for telematics and infotainment services. The move marks a shift toward more integrated, software-centric car services for Bayerische Motoren Werke customers. BMW shares trade around €57.32, having declined 14.4% over the past month and 40.5% year to date.
Verizon partners with BMW and KDDI on 5G connected cars, launches Gizmo Watch 4
Verizon Communications is expanding into connected vehicles through a new partnership with BMW Group and KDDI, focusing on 5G automotive services in the U.S., while also introducing the Gizmo Watch 4, a next-generation kid-focused wearable with new safety features and family rewards. The BMW and KDDI collaboration will integrate Verizon's 5G Standalone network into new BMW and MINI vehicles, tying its infrastructure to automotive platforms where connectivity is becoming a core feature. The Gizmo Watch 4 is tightly linked to the Verizon Family app, loyalty program, and Shine rewards, keeping Verizon involved in early-stage customer relationships. Additionally, Verizon was identified as a key participant in the high-growth Unified Communication as a Service market, pointing to its role in cloud-based collaboration and remote work tools alongside peers such as AT&T and T-Mobile.
VZ · Demand · Positive Partnerships with BMW and KDDI for 5G connected cars and launch of Gizmo Watch 4 expand Verizon's customer base and service offerings.
BMW.XETRA · Technology · Positive BMW integrates Verizon's 5G Standalone network into new vehicles, enhancing connectivity features.
9433.JP · Demand · Positive KDDI partners with Verizon and BMW to offer 5G automotive services in the U.S., expanding its business.
Soracom cuts SG&A ratio by 6 points with generative AI, leveraging field data and telecom tech for competitive edge
Ken Tamagawa, President and CEO of Soracom, which operates an IoT platform, announced at the annual event SORACOM Discovery 2026 that the company reduced its selling, general and administrative expense ratio against revenue by 6 percentage points in one year through the use of generative AI. After declaring internally that it would become a post-AI organization, the company restructured into small teams for each business combined with AI, resulting in generative AI writing nearly 100 percent of source code and cutting SG&A costs without reducing headcount. Tamagawa noted that as AI foundation models become commoditized, competitive advantage lies in accumulating company-specific field data and token capital, the ability to master AI. Leveraging its strength in developing telecom as cloud-based software in-house, Soracom holds the gateway for feeding field data into AI. The newly announced AI agent service, SORACOM Agent, provides conversational support from IoT planning to operations and accumulates business knowledge as long-term memory. The company also jointly developed an IoT SIM with KDDI supporting the new eSIM standard SGP.32 for remote SIM rewriting, and began commercial provision. Furthermore, it announced a business selling core network software to telecom operators, with commercial use already underway through a joint venture with the Marubeni I-DIGIO Group.
Verizon Partners With KDDI to Provide 5G Connectivity for New BMW Vehicles in the U.S.
Verizon Communications has partnered with KDDI Corporation to provide 5G Standalone and LTE connectivity for newly manufactured BMW Group vehicles in the United States. The agreement covers BMW, MINI and other BMW Group vehicles, supporting the automaker's ConnectedDrive platform with advanced telematics, remote functions, digital infotainment and app-based services. Verizon's nationwide 5G infrastructure will work in collaboration with KDDI's Global Communications Platform to ensure secure, reliable data transmission. Newly manufactured BMW Group vehicles will be the first to operate on Verizon's nationwide 5G Standalone offering, powered by its 5G core and built-in 3GPP Release 16 industry standards. The deal strengthens Verizon's position in enterprise wireless services and expands its automotive portfolio, which already includes telematics services for Volkswagen Group brands.
Lawson will begin a pilot of in-store payments using the yen-denominated stablecoin JPYC in early August. The test will take place at the Lawson Takanawa Gateway City store operated by KDDI and Lawson, in collaboration with digital asset wallet provider HashPort. The trial will verify a system where a barcode is scanned at the point-of-sale terminal to update the JPYC balance. This is said to be Japan's first pilot of stablecoin payments linked to a POS system. Based on the results, Lawson will consider a full-scale rollout.
Japan's five mobile carriers delay launch of 060 numbers
NTT Docomo, KDDI, SoftBank and two other mobile carriers announced on the 8th that they are postponing the introduction of phone numbers starting with 060. The launch had been planned for July or later, but system adaptations such as on-device display are taking longer than expected. The Ministry of Internal Affairs and Communications is urging the carriers to start the service within this fiscal year. As the number of mobile users grows, the existing 090, 080 and 070 number ranges are running low. To prepare for number exhaustion, the ministry revised regulations in December 2024 to make the 060 prefix available.
KDDI Confirms Leak of 12.23 Million Email Addresses
KDDI announced on the 6th that it has confirmed the leak of approximately 12.23 million email addresses and about 7.62 million passwords due to unauthorized access to its email system for internet service providers. No secondary damage has been confirmed, and password changes for affected users are expected to be completed within a few days. The company had disclosed last month that up to 14.22 million records could have been compromised.
Circles, Greyskies, and HCLTech join TM Forum Catalyst Program to accelerate AI-led autonomous network operations
Circles, Greyskies, and HCLTech have joined the TM Forum Catalyst Program to co-develop an AI-powered multi-agent framework for autonomous network operations. The collaboration includes telecom operators Circles.Life, KDDI, Orange, and TELUS, and aims to unify customer experience, network operations, and business processes into a real-time operational ecosystem. The solution combines Circles' AI-native digital telco platform, Greyskies' AI-enabled intelligent network operations, and HCLTech's expertise in AI, automation, and TM Forum Open APIs. It is designed to accelerate end-to-end automation, enhance service assurance, and improve customer engagement while unlocking new monetization opportunities. The Catalyst projects will be showcased at TM Forum's DTW Ignite event in Copenhagen from June 23 to 25.
Artificial Intelligence › AI Applications & Copilots Technology
Artificial Intelligence › Agentic AI & Autonomous Workflows Technology
Circles.Life · Technology · Positive Circles.Life is a core participant contributing its AI-native digital telco platform to the Catalyst program.
Greyskies · Technology · Positive Greyskies' AI-enabled intelligent network operations is a core part of the co-developed AI-powered multi-agent framework for autonomous network operations.
HCLTech · Technology · Positive HCLTech is a core participant in co-developing the AI-powered multi-agent framework, showcasing its AI and automation expertise.
9433.JP · Technology · Positive KDDI is a participating operator in the Catalyst program, which may benefit from the AI-powered autonomous network framework.
TU · Technology · Positive TELUS is a participating operator in the Catalyst program, which may benefit from the AI-powered autonomous network framework.