Coincheck Group N.V. (CNCK) posts 2025 monthly trading metrics update

Rhea-AI Filing Summary

Coincheck Group N.V. filed a Form 6-K providing preliminary monthly operating data for its Japan-based crypto platform Coincheck for January through December 2025. The disclosure lists exchange trading volume and marketplace trading volume in million yen, customer assets in million yen, and the number of verified accounts at each month-end. For example, exchange trading volume was 595,094 million yen in January 2025 and 332,520 million yen in December 2025, while customer assets moved from 1,285,614 million yen in January to 948,533 million yen in December. Verified accounts increased from 2,258,295 at the end of January 2025 to 2,475,345 at the end of December 2025. The company emphasizes that these monthly figures are preliminary, unaudited, subject to update, and not intended to be extrapolated for future periods.

NO 

UNITED STATES

SECURITIES AND EXCHANGE COMMISSION

WASHINGTON, DC 20549

FORM 6-K

REPORT OF FOREIGN PRIVATE ISSUER

PURSUANT TO RULE 13a-16 OR 15d-16 UNDER

THE SECURITIES EXCHANGE ACT OF 1934

For the month of January 2026

Commission File Number: 001-42438

COINCHECK GROUP N.V.

(Translation of registrant’s name into English)

Nieuwezijds Voorburgwal 162

1012 SJ Amsterdam

The Netherlands

(Address of principal executive offices)

Indicate by check mark whether the registrant files or will file annual reports under cover of Form 20-F or Form 40-F: 

Form 20-F ☒     Form 40-F ☐

Coincheck Group N.V. (“Coincheck Group”) is providing the below update for Coincheck, Inc. (“Coincheck”). This information will also be posted at https://coincheck.com. Coincheck Group (“CNCK” and “CNCKW”) is a public limited liability company and the holding company for Coincheck. Coincheck operates one of the largest multi-cryptocurrency marketplaces and crypto asset exchanges in Japan and is regulated by the Japan Financial Services Agency. Coincheck provides Marketplace and Exchange platforms on which diverse cryptocurrencies, including Bitcoin and Ethereum, are held and exchanged as well as other retail-focused crypto services.

Coincheck Group uses its website (https://www.coincheckgroup.com/) to distribute company information and makes available free of charge a variety of information for investors, including its filings with the Securities and Exchange Commission (“SEC”), as soon as reasonably practicable after electronically filing that material with, or furnishing it to, the SEC. The information that Coincheck Group posts on its website may be deemed material. Accordingly, investors should monitor Coincheck Group’s website, in addition to following its press releases, filings with the SEC, and public conference calls and webcasts. In addition, investors may opt in to automatically receive email alerts and other information about Coincheck Group when enrolling their email address by visiting the “Email Alerts” section of the Coincheck Group website. Coincheck Group does not incorporate the information contained on, or accessible through, Coincheck Group’s website, Coincheck’s website or related social media channels into this Report on Form 6-K.

Monthly Disclosure

Coincheck, Inc. is reporting the following preliminary monthly disclosure information for the past twelve months. The preliminary numbers in the tables below are based on currently available information. These preliminary estimates have not been audited by any independent registered public accountants, are subject to update and should not be extrapolated for future periods. 

			Jan. 2025						Feb. 2025						Mar. 2025						Apr. 2025						May. 2025						Jun. 2025
Exchange Trading Volume (Million yen)			595,094						410,135						454,277						366,050						375,676						310,449
Marketplace Trading Volume (Million yen)			46,700						25,629						19,637						21,672						21,333						18,525
Customer Assets (Million yen)			1,285,614						873,795						859,623						886,884						989,365						1,000,300
Number of Verified Accounts			2,258,295						2,278,320						2,291,103						2,302,376						2,325,978						2,351,223

			Jul. 2025						Aug. 2025						Sep. 2025						Oct. 2025						Nov. 2025						Dec. 2025
Exchange Trading Volume (Million yen)			387,980						318,293						243,193						461,239						415,585						332,520
Marketplace Trading Volume (Million yen)			39,165						29,146						26,358						35,996						29,023						22,651
Customer Assets (Million yen)			1,239,868						1,159,863						1,189,219						1,177,426						1,005,469						948,533
Number of Verified Accounts			2,378,672						2,400,859						2,421,080						2,442,923						2,460,621						2,475,345

Notes 

●Exchange Trading Volume for a specific period is the total value, based on the underlying asset, of all transactions completed through Coincheck’s exchange platform. Coincheck’s exchange platform facilitates buy and sell transactions directly between two parties (a buyer and a seller) for which, generally, Coincheck charges no fee. Coincheck sometimes is a buyer on the exchange platform to help support transaction activity on the marketplace platform.

●Marketplace Trading Volume for a specific period is the total value, based on the underlying asset, of all transactions completed through Coincheck’s marketplace platform business. Historically, Coincheck’s total revenue has been derived primarily from transactions on Coincheck’s marketplace platform business. For additional details, please see Coincheck Group N.V.’s filings with the U.S. Securities and Exchange Commission.

●Customer Assets and Number of Verified Accounts correspond to figures as of the end of each month. Verified Accounts are all accounts that have been opened after the account owner completes all application procedures (including “know your customer” or “KYC”), after subtracting therefrom the total number of closed accounts.

●Customer Assets are cryptocurrencies held for customers + fiat currency deposited by customers. Customer Assets do not include non-fungible tokens (NFTs).

●Prior monthly numbers, which are generally preliminary at the time of initial publication, may have been updated by immaterial amounts.

SIGNATURES

Pursuant to the requirements of the Securities Exchange Act of 1934, the registrant has duly caused this report to be signed on its behalf by the undersigned, thereunto duly authorized.

			COINCHECK GROUP N.V.
Date: January 06, 2026			By:			/s/ Gary A. Simanson
						Name:			Gary A. Simanson
						Title:			Chief Executive Officer and President

FAQ

What does Coincheck Group N.V. (CNCK) disclose in this Form 6-K?

The company provides preliminary monthly data for January–December 2025 for its Coincheck platform, including exchange trading volume, marketplace trading volume, customer assets and the number of verified accounts.

How large were Coinchecks trading volumes in 2025?

The disclosure includes monthly exchange trading volume, such as 595,094 million yen in January 2025 and 332,520 million yen in December 2025, and marketplace trading volume, such as 46,700 million yen in January 2025 and 22,651 million yen in December 2025.

What customer asset levels does Coincheck report for 2025?

Coincheck reports monthly-end customer assets, defined as cryptocurrencies held for customers plus fiat currency deposits, such as 1,285,614 million yen at the end of January 2025 and 948,533 million yen at the end of December 2025.

How did Coinchecks verified account count change during 2025?

The number of verified accounts, which are fully KYC-completed and open accounts net of closures, rose from 2,258,295 at the end of January 2025 to 2,475,345 at the end of December 2025.

Are the 2025 monthly figures for Coincheck audited or final?

No. The company states these monthly numbers are preliminary, based on currently available information, unaudited, and subject to update, and they should not be extrapolated for future periods.

Where can investors access Coincheck Group N.V.s disclosures and updates?

Coincheck Group posts company information and SEC filings on its website at https://www.coincheckgroup.com/, and Coincheck-specific updates are posted at https://coincheck.com. Investors can also enroll for email alerts via the Coincheck Group website.

How is Coincheck regulated and what services does it provide?

Coincheck operates one of the largest multi-cryptocurrency marketplaces and crypto asset exchanges in Japan and is regulated by the Japan Financial Services Agency. It offers marketplace and exchange platforms for diverse cryptocurrencies, including Bitcoin and Ethereum, along with other retail-focused crypto services.