New Media 'OPENBOOK' Challenging the Financial Information Gap to Launch on May 1, 2026
OPENBOOK Inc. is launching a new financial media platform, 'OPENBOOK,' on May 1, 2026. Under the motto 'Finance is not a black box,' it will provide investors with essential information and knowledge for better investment decisions, completely free of charge.
📋 Article Processing Timeline
- 📰 Published: May 1, 2026 at 19:59
- 🔍 Collected: May 1, 2026 at 11:31
- 🤖 AI Analyzed: May 1, 2026 at 20:12 (8h 41m after Collected)
OPENBOOK Inc. (Headquarters: Nakano-ku, Tokyo; President and CEO: Keiko Yamaguchi) will launch the financial media 'OPENBOOK' (https://openbookjp.com) on May 1, 2026. With the motto 'Finance is not a black box,' it will provide investors with essential information and knowledge to make better investment decisions, completely free of charge.
**■ Background of Service Launch**
While investment and asset building have become widespread and the demand for investment information has increased, a large volume of information is now available. This situation requires knowledge to select high-quality information.
Furthermore, due to the current structure of the asset management industry, there still exists what is known as 'information asymmetry,' where information is transmitted through multiple layers, and the information that ultimately reaches investors is limited. As a result, investors may not be able to access the information they truly want or may find it difficult to judge the facts.
OPENBOOK recognizes that, with the current improvement in investor literacy, a media platform that delivers essential information to investors is indispensable. It was established as a new platform for information dissemination, free from existing constraints, to directly confront 'information asymmetry.'
**■ Three Features of OPENBOOK**
**1. Industry Insider Perspective:** Explains 'why things are the way they are' based on many years of industry experience, rather than general theories. It delivers essential knowledge that cannot be obtained through self-taught methods or secondary information online.
**2. All Information is Free:** Aims to be an open platform where everyone can access information. To prevent the radicalization of investment information due to monetization, it generally does not offer paid content.
**3. Free from Constraints:** The company received no support from other companies during its establishment. It thoroughly manages conflicts of interest, prioritizing the interests of general investors.
**■ Comment from President and CEO, Keiko Yamaguchi**
'I have experienced the financial industry from various standpoints—banking, asset management, and online brokerage—over 15 years. Throughout this time, the consistent question I faced was, 'How can correct information be conveyed to investors?'
In the world of finance, much remains 'unknown.' Due to the multi-layered structure of information, a 'game of telephone' and information selection occur, resulting in limited information reaching investors, a situation still known as 'information asymmetry.'
To directly address this challenge, I believed an independent position, free from existing frameworks and relationships, was necessary, and thus decided to establish the company.
Our company will serve as a transparent conduit connecting upstream information with final investors, supporting investors in making more appropriate decisions and creating an environment where superior products are correctly chosen. Through this, we will contribute to the development of the entire financial ecosystem.'
**■ Service Overview**
Service Name: OPENBOOK
URL: https://openbookjp.com
YouTube Channel: https://www.youtube.com/@openbookjp
Service Start Date: May 1, 2026
Target Audience: Individuals interested in investment, those wishing to improve financial literacy
Fee: Free
**■ Company Profile**
President and CEO: Keiko Yamaguchi
After graduating from Kobe University, joined a major bank in 2011, engaged in retail sales, and then worked as an asset management specialist from 2016. Joined an online brokerage in 2021, serving as department head for investment trust business, among other roles. Having experienced the financial industry from various perspectives for 15 years—banking, asset management, online brokerage—she recognized challenges in information transmission and founded OPENBOOK in May 2026.
Company Name: OPENBOOK Inc.
Capital: 5,000,000 JPY
Business Activities: Planning, production, and operation of financial digital media; content production and marketing support; education, event, and seminar businesses.
**■ Contact for this matter**
OPENBOOK Inc. Keiko Yamaguchi
Inquiry Form: https://x.gd/5YMhn
Keywords:
**■ Background of Service Launch**
While investment and asset building have become widespread and the demand for investment information has increased, a large volume of information is now available. This situation requires knowledge to select high-quality information.
Furthermore, due to the current structure of the asset management industry, there still exists what is known as 'information asymmetry,' where information is transmitted through multiple layers, and the information that ultimately reaches investors is limited. As a result, investors may not be able to access the information they truly want or may find it difficult to judge the facts.
OPENBOOK recognizes that, with the current improvement in investor literacy, a media platform that delivers essential information to investors is indispensable. It was established as a new platform for information dissemination, free from existing constraints, to directly confront 'information asymmetry.'
**■ Three Features of OPENBOOK**
**1. Industry Insider Perspective:** Explains 'why things are the way they are' based on many years of industry experience, rather than general theories. It delivers essential knowledge that cannot be obtained through self-taught methods or secondary information online.
**2. All Information is Free:** Aims to be an open platform where everyone can access information. To prevent the radicalization of investment information due to monetization, it generally does not offer paid content.
**3. Free from Constraints:** The company received no support from other companies during its establishment. It thoroughly manages conflicts of interest, prioritizing the interests of general investors.
**■ Comment from President and CEO, Keiko Yamaguchi**
'I have experienced the financial industry from various standpoints—banking, asset management, and online brokerage—over 15 years. Throughout this time, the consistent question I faced was, 'How can correct information be conveyed to investors?'
In the world of finance, much remains 'unknown.' Due to the multi-layered structure of information, a 'game of telephone' and information selection occur, resulting in limited information reaching investors, a situation still known as 'information asymmetry.'
To directly address this challenge, I believed an independent position, free from existing frameworks and relationships, was necessary, and thus decided to establish the company.
Our company will serve as a transparent conduit connecting upstream information with final investors, supporting investors in making more appropriate decisions and creating an environment where superior products are correctly chosen. Through this, we will contribute to the development of the entire financial ecosystem.'
**■ Service Overview**
Service Name: OPENBOOK
URL: https://openbookjp.com
YouTube Channel: https://www.youtube.com/@openbookjp
Service Start Date: May 1, 2026
Target Audience: Individuals interested in investment, those wishing to improve financial literacy
Fee: Free
**■ Company Profile**
President and CEO: Keiko Yamaguchi
After graduating from Kobe University, joined a major bank in 2011, engaged in retail sales, and then worked as an asset management specialist from 2016. Joined an online brokerage in 2021, serving as department head for investment trust business, among other roles. Having experienced the financial industry from various perspectives for 15 years—banking, asset management, online brokerage—she recognized challenges in information transmission and founded OPENBOOK in May 2026.
Company Name: OPENBOOK Inc.
Capital: 5,000,000 JPY
Business Activities: Planning, production, and operation of financial digital media; content production and marketing support; education, event, and seminar businesses.
**■ Contact for this matter**
OPENBOOK Inc. Keiko Yamaguchi
Inquiry Form: https://x.gd/5YMhn
Keywords: