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§05
Network
NETWORK
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§06
History
78 EVENTS
Masaru Matatani established Kousei Securities Co., Ltd. in Osaka Kitahama
Established: April 1961 (Showa 36)
Founded in April 1961 (Showa 36) in Osaka Kitahama
(S36.10) Original headquarters building at founding
Original headquarters building at the time of founding (S36.10)
(S41.7) Headquarters building after relocation
Headquarters building after relocation (S41.7)
Obtained securities license (Type 1, 2, 4) under the licensing system
Obtained securities licenses (Nos. 1, 2, 4) under the licensing system in 1968 (Showa 43)
Osaka Stock Exchange Full Membership
Showa 46: Osaka Stock Exchange Full Membership
(S46.10) Acquired membership of Osaka Stock Exchange
Acquired membership at Osaka Securities Exchange (S46.10)
Absorbed and merged with Kooko Securities Co., Ltd.
Merged with Koukyo Securities Co., Ltd. in 1973 (Showa 48)
Securities Business License (No. 3) Obtained
Showa 52: Securities Business License (No. 3) Obtained
(S52.2) Relocated headquarters to Oobayashi Building
Relocated headquarters to the Saburobashi Building
Approval of public bond agency business
1958: Approval of public bond agency business
Tokyo Stock Exchange Full Membership
Approval of stock transaction agency business
1963: Joined the Tokyo Stock Exchange as a full member; approval of stock transaction agency business
(S56.10) Acquired membership of Tokyo Stock Exchange
1966: Acquired membership rights at the Tokyo Stock Exchange
Approval of agency business for investment trusts and cumulative investment
Approval of money lending business
1968: Approval of investment trust and cumulative investment agency business; approval of loan business
1970: Promoted to a comprehensive securities company
Promoted to comprehensive securities company
Showa 60 October Comprehensive Securities
Started handling Bank of Japan current deposits
1972: Began handling Bank of Japan current deposits
Commenced handling of government bond principal and interest payments
1973: Started handling national bond principal and interest payments; Osaka Stock Exchange listed special designated securities in the second division
Listed on the new second section of Osaka Stock Exchange (17th listing as a securities company)
May 1973: Osaka Stock Exchange new second division listing (17th listing as a securities firm)
Heisei 2: Osaka Stock Exchange First Section Listing
Osaka Stock Exchange First Section Promotion
Heisei 2 September Osaka Stock Exchange First Section Promotion
Heisei 3: Tokyo Stock Exchange First Section Listing
Tokyo Stock Exchange First Section Listing
Heisei 3 February Tokyo Stock Exchange First Section Listing
Integrated Nagoya branch into headquarters, becoming two domestic offices
Transitioned to registration system, registered as a securities business
Securities Investor Protection Fund (now Japan Investor Protection Fund) Membership
1998: Merged Nagoya branch into headquarters, becoming two domestic offices; transitioned to a registered system for securities registration; joined the Securities Investor Protection Fund (now Japan Investor Protection Fund)
Moved Tokyo office to new headquarters (Nihonbashi Kabutocho)
1999: Moved Tokyo office to a new building (Nipponbashi Kabutocho)
(H11.10) Tokyo Branch New Building: (Japan Bridge Kabutocho, Chuo-ku, Tokyo)
H11.10 Tokyo Branch New Building
Founder Suguro Shun President Resignation
President Daisuke Mattsukawa Appointment
Masaru Matatani appointed Chairman of Osaka Securities Exchange
2000: Founder Goichi Satake resigned as president; Daisuke Satake became president; Goichi Satake became chairman of Osaka Stock Exchange; (the following year, with the corporatization of Osaka Stock Exchange, he became the first president)
Moved headquarters to new building (Osaka Kitahama)
2001: Relocated headquarters to a new building (Osaka Kitahama)
(H13.5) Main Office New Building: (Kitahama, Chuo-ku, Osaka)
H13.5 Headquarters New Building
Registered as a Type 1 securities business under the Securities and Exchange Act
2007: Registered as a Type 1 securities business under the Financial Instruments and Exchange Act
Second Class Financial Instruments Business (Exchange FX Trading) Registration
Heisei 21: Registration of Type 2 Financial Instruments Business (Exchange FX Trading)
Launched internet trading for all products on the Tokyo Stock Exchange Derivatives
2011: Started internet trading for all derivatives listed on the Tokyo Stock Exchange
Launched internet trading for all products on the Osaka Exchange Derivatives
Started a service business providing core securities systems on a cloud-based platform
2014: Started internet trading for all derivatives listed on the Osaka Exchange
2014: Began a service business providing our core securities system on a cloud-based environment
Commenced handling of foreign private placement funds through partnership with independent financial planners
Implemented a 1:10 reverse split of common shares, changing the unit share from 1,000 to 100
Started internet trading of listed shares on the Tokyo Stock Exchange
2017: Started handling foreign private placement funds through a partnership with an independent financial planner
2017: Consolidated ordinary shares at a ratio of 1:10 and changed the unit share size from 1,000 to 100 shares
2017: Started internet trading of listed shares on the Tokyo Stock Exchange
Commenced handling of listed futures on the Osaka Exchange
Reiwa 2: Started handling futures of listed products on Osaka Exchange
§07
News
22 ARTICLES
Notice of Credit Transaction Interest Rate Change
From the settlement on November 2, 2026 (delivery on November 5), the credit transaction interest rates will change. The buyer's interest rate for institutional credit will be 2.74%, and for general credit 3.24%, both an increase of 0.1% from the current rates. The seller's interest rate (institutional credit) remains at 0%, and the lending fee (institutional credit) remains at 1.15%. The new rates will apply to existing positions for the holding period after the change date.
Margin trading interest rates and stock lending fees will change for trades agreed from October 1, 2026. The new rates will also apply to existing open positions.
Kosei Securities IPO Information: AudioStock
Kosei Securities is providing information about the planned Growth Market IPO of AudioStock. The indicative price range is ¥1,020–¥1,060, the application period is September 9–14, 2026, and the listing date is September 16, 2026.
Kosei Securities to Hold Seminar at Tokyo Office on September 26
Kosei Securities will hold a follow-up seminar at its Tokyo office on September 26, 2026. The same program will be offered twice, in the morning and afternoon. Participation is free.
Margin trading interest rates and stock lending fees will change for trades agreed from September 1, 2026. The new rates will also apply to existing open positions.
Kosei Securities Announces Support for Kumamoto Earthquake Victims
Kosei Securities will provide special assistance to residents of municipalities covered by the Disaster Relief Act following the 2026 Kumamoto earthquake. Support includes withdrawals when a registered seal has been lost and expedited payment of proceeds from securities sales or cancellations. A help desk is also available.
Kosei Securities Publishes Past News List
Kosei Securities publishes past news and notices, providing information such as changes in margin trading interest rates and financial results.
Audit Report on Segregated Management of Customer Assets
Kosei Securities has undergone a legal compliance audit of segregated management by Limited Liability Azusa Audit Corporation based on the Financial Instruments and Exchange Act and self-regulatory rules, and reported the results.
Mitsuyo Securities Changes Margin Trading Interest Rates from July 2026
Announced that from the transactions settled on July 1, 2026, the interest rates for margin trading and stock lending fees will be increased.
Notice of Passkey Authentication Implementation for Kōsei Club
Kōsei Securities will make passkey authentication mandatory for logging into Kōsei Club from August 31, 2026, to prevent unauthorized access and enhance security.
§08
Public records
GOV
National Tax Agency basic information6120001077409
Source: National Tax Agency Corporate Number Publication Site, basic three items
Trade name
光世証券株式会社
Trade name (kana)
コウセイショウケン
Name in English
Corporation type
301
Address
〒541-0041 大阪府大阪市中央区北浜２丁目１番１０号
Postal code
5410041
Prefecture code
27
City code
128
Address outside Japan
Prefecture in English
City in English
Address outside Japan in English
Corporate number assignment date
2015-10-05
Update date
2018-07-25
Change date
2015-10-05
Registry closure date
Reason for registry closure
Successor corporate number
Details of the change
Latest record
1
Excluded from search
0
Processing type
01
Correction type
1
Trade name image ID
Address image ID
Sequence number
4254370
METI gBizINFO6120001077409
Source: gBizINFO (Ministry of Economy, Trade and Industry)
