Here’s Why Metaplanet Could Become the Goldman Sachs of Bitcoin Treasury Finance.

Two events happened on consecutive days in June 2026 that I believe will be remembered as the inflection point for Bitcoin-native finance in Japan.

YouTube Video Presentation HERE

On June 11, Japan’s House of Representatives passed an amendment to the Financial Instruments and Exchange Act — the FIEA — formally reclassifying Bitcoin and over 100 other crypto assets as financial instruments under securities law. The same regulatory category as stocks and bonds.

On June 12, Metaplanet announced it had agreed to acquire 100% of Siiibo Securities for ¥2.1 billion, obtaining the Type I Financial Instruments Business license that gives it the legal right to originate and distribute Bitcoin yield products directly to Japanese households.

One day apart. Arguably the most consequential 48 hours in Japan’s Bitcoin regulatory history.

In this article, I want to do two things. First, give you a complete picture of what the FIEA is, why it matters, and what this amendment changes for Bitcoin treasury companies like Metaplanet. Second, make the analytical case for something Benchmark Equity Research raised in their June 15 research note: that Metaplanet Securities is positioning itself to become the Goldman Sachs of Bitcoin treasury bond issuance in Japan — not just issuing for itself, but underwriting for the entire ecosystem.

That is a bold claim. I want to examine it carefully, with honesty about both the opportunity and the risks.

What Is the FIEA? A Plain-Language Primer

Before we can understand why the amendment matters, we need to understand what the FIEA is and what it governs.

The Financial Instruments and Exchange Act — 金融商品取引法 in Japanese — is Japan’s primary securities law. Think of it as Japan’s equivalent of the US Securities Exchange Act. It governs who can issue financial products, who can distribute them, how they must be disclosed, and how the market must be conducted.

Any company that wants to originate or distribute financial products in Japan — stocks, bonds, derivatives, investment funds — must be registered under the FIEA as a Financial Instruments Business Operator. A Type I registration, which Metaplanet now controls through the Siiibo acquisition, is the most comprehensive license available. It covers equity, fixed income, derivatives, and structured products.

The FSA — Japan’s Financial Services Agency — enforces the FIEA and sets the secondary rules and disclosure standards beneath it. When Japanese institutional investors write their investment mandates, they use FIEA-defined categories to describe what they can and cannot hold. The FIEA is not just a compliance checkbox. It is the legal architecture that determines what products can exist, who can sell them, who can buy them, and what happens when things go wrong.

Why Bitcoin Was Outside the FIEA — And Why That Mattered

Here is the critical background that most retail investors don’t appreciate.

Until this amendment, Bitcoin was not a financial instrument under Japanese law. It was a payment instrument governed by the Payment Services Act — legislation introduced in 2017 in the aftermath of the catastrophic Mt. Gox collapse of 2014.

Think of the Payment Services Act as the regulatory framework you would build if you wanted to govern a very complicated kind of prepaid card. That’s essentially what it treated Bitcoin as. A digital tool for transferring value. Not an investment product. Not a security. Not a financial instrument.

This had a specific, concrete consequence for the BitBond thesis I explored in my previous article. A bond backed by Bitcoin collateral sits at the intersection of two laws — the FIEA (which governs the bond) and the PSA (which governed the Bitcoin). There was no unified legal framework that told a regulator, an institutional investor, or a bond trustee how to assess Bitcoin as financial collateral under securities law.

The disclosure standards didn’t exist. The collateral treatment was legally undefined. That ambiguity made institutional mandates difficult to write, structured products hard to issue, and large-scale retail distribution of BTC-backed bonds essentially impossible in practice.

The FIEA amendment resolves all of this at the foundational level.

Previous Presentation about BitBonds HERE

The Decade-Long Regulatory Journey

Japan’s path to this moment was not sudden. It was a decade of methodical, sometimes frustrating progress — responding to market events and building regulatory infrastructure piece by piece.

I find this timeline genuinely important for understanding how Japan operates. Japan does not regulate by fiat. It builds consensus, issues working group recommendations, runs public consultation processes, and advances legislation through proper Diet deliberation. This process looks slow from the outside. But what it produces is durable, well-socialized regulation with broad institutional buy-in.

The FIEA amendment did not come out of nowhere. It is the culmination of years of FSA working groups, Financial System Council reports, and market consultations. The fact that no major opposition emerged in the Lower House debate reflects how thoroughly the groundwork was laid.

What the Amendment Actually Changes

Let me be specific about what the FIEA amendment does, because the details matter enormously for the BitBond and broader Bitcoin financial product thesis.

1. Bitcoin Becomes a Financial Instrument

This is the foundational change. Bitcoin, Ethereum, XRP, and over 100 other crypto assets listed on registered Japanese exchanges are now legally classified as financial instruments — the same category as stocks and bonds.

For BitBonds specifically: Bitcoin as a financial instrument means it can now serve as formal securities-law collateral for a bond issuance. The legal gap that made BTC-backed bond disclosure structurally undefined no longer exists. A bond prospectus can now describe Bitcoin collateral using the same legal language that describes mortgage collateral in a covered bond.

For Metaplanet, this is actually a competitive advantage, not a burden. Metaplanet already discloses its Bitcoin holdings in near-real time and publishes quarterly results with detailed BTC metrics. It is structurally ahead of where the regulation requires new entrants to be. Smaller competitors entering the BTC-backed product space will face compliance costs that Metaplanet has already absorbed.

2. Mandatory Disclosure Framework

Under the FIEA, issuers now face mandatory annual disclosure requirements covering the nature of the asset, supply parameters, risk factors, and business finances — the same disclosure regime that Japanese equity issuers operate under.

This matters for institutional capital allocation. Many institutional mandates explicitly require defined disclosure standards before a product can be included in a portfolio. The new framework provides exactly that, unlocking pools of institutional capital that were previously precluded from BTC-backed products by mandate restrictions.

3. Insider Trading Prohibition

Under the PSA, Bitcoin markets had no insider trading rules. The FIEA amendment closes that gap — bringing crypto markets under the same market conduct standards as listed securities. Many institutional mandates explicitly prohibit investing in asset classes with inadequate market conduct enforcement. The insider trading prohibition removes a barrier that had kept certain institutional pools of capital out of Bitcoin-linked products entirely.

4. Capital Gains Tax Reform: 55% to 20%

This is perhaps the most commercially significant change, arriving in 2028. Currently, Bitcoin gains in Japan are taxed as ordinary income under a progressive rate structure reaching 55% — one of the highest effective crypto tax rates among developed economies.

At 20% flat, with a three-year loss carry-forward mechanism, the after-tax return profile of Bitcoin-linked fixed income becomes directly comparable to equities. The pool of investors for whom these products are commercially rational expands dramatically. A Japanese high-income investor who previously faced 55% tax on gains from a BTC-backed bond now faces 20%. That changes the entire economics of the product.

5. Crypto ETF Pathway

The FIEA classification opens the legal route for spot Bitcoin ETFs in Japan — a product not previously available. The Japan Exchange Group is reported to be preparing crypto-linked ETFs, potentially available as early as 2027. This matters for the Metaplanet thesis indirectly: spot Bitcoin ETFs will drive mainstream retail awareness and acceptance of Bitcoin as an investable asset class, expanding the addressable market for all Bitcoin-linked financial products.

The Current Legislative Status

I want to be precise here, because some commentators conflate what has happened with what is still pending.

• ✅  Cabinet approved: April 10, 2026

• ✅  Lower House (House of Representatives) passed: June 11, 2026

• ⏳  Upper House (House of Councilors): Pending ratification

• ⏳  Full FIEA implementation: FY2027 (April 2027 – March 2028)

• ⏳  Tax reform (20% flat rate): 2028

The Upper House passage is widely expected but not guaranteed. In the event of significant political disruption or election timing, the bill could be delayed. This represents a real, if low-probability, risk to the BitBond timeline. For analytical purposes, I treat FY2027 implementation as the base case.

How the FIEA Amendment Connects to Metaplanet’s Strategy

Now let me connect the regulatory framework to Project NOVA — because the sequencing here is not coincidental.

Metaplanet’s management team, drawn from global investment banks and major domestic financial institutions, understood years ago that the critical bottleneck for Bitcoin-native financial products in Japan was not capital, not investor demand, and not product design. It was the regulatory framework.

Their response was to build the infrastructure in the window before the framework arrived — so that when the law changed, Metaplanet would be the only entity in Japan with the Bitcoin treasury, the securities distribution license, the asset management capability, the institutional relationships, and the operational track record to immediately scale product issuance.

Each piece was built in deliberate sequence. The Bitcoin treasury came first because it is the foundation of everything. The income generation business came second because it proves the model. The preferred shares came third as the first product issuance. The infrastructure subsidiaries came last — because they only become truly powerful when the FIEA regulatory framework is in place.

That framework is now, for the first time, arriving.

The Goldman Sachs Analogy: What It Means and Why It’s Apt

Let me now address the claim that Benchmark’s Mark Palmer raised in his June 15 research note — that Metaplanet is “positioned to issue the first BitBonds, capture a slice of $7tn in idle Japanese household cash, and underwrite the bitcoin treasuries of others.”

That last phrase — “underwrite the bitcoin treasuries of others” — is where the Goldman Sachs comparison becomes analytically interesting. Because it describes a fundamentally different business model from what most analysts are currently pricing.

What Underwriting Actually Means

Let’s start from first principles before connecting it to Metaplanet.

When a company wants to raise money by issuing a bond, it faces a practical problem. It needs to find hundreds or thousands of investors willing to buy that bond — simultaneously, at the right price, on the right terms. Most companies have no idea how to do that. They don’t have the investor relationships, the pricing expertise, or the distribution network.

So they hire an investment bank to underwrite the deal.

The investment bank does several things:

• Structures the instrument — decides the coupon rate, maturity, collateral terms, covenants

• Prices the deal — determines what yield the market will accept

• Builds the investor book — contacts institutional investors, gauges demand, allocates bonds

• Distributes the product — places the bonds with buyers through its network

• Guarantees the issuance — in a firm underwriting, the bank buys the entire bond itself and resells it, taking placement risk off the issuer

The issuing company pays the bank origination fees, structuring fees, and distribution commissions. The bank earns those fees across every deal it underwrites — not just its own financing needs.

Think of it like a builder who constructs their own house and builds houses for everyone else in the neighborhood. The fees from building others’ houses become an entirely separate revenue stream, independent of the value of the builder’s own property.

What Goldman Sachs Actually Built

Goldman Sachs did not become Goldman Sachs by being the largest corporation in America.

It became Goldman Sachs by being the firm that every other corporation called when it needed to raise capital. Goldman structured the deal, built the investor book, placed the bonds or shares with its institutional clients, and collected fees — on thousands of transactions, across hundreds of industries, over decades.

The Goldman business model has three structural advantages that compound over time:

• The flywheel effect. More deals → more investor relationships → more deal flow → deeper expertise → better pricing → more deals. Each transaction makes the next one easier and more profitable.

• The information advantage. Because Goldman sees deal flow across the entire economy, it develops an unmatched picture of where capital is flowing, what investors want, and how to price risk. That information advantage becomes a durable competitive moat.

• Fee revenue independent of its own balance sheet. Goldman earns fees whether the bonds it underwrites go up or down in value after issuance. The revenue is structural, not directional.

Now apply that framework to what Metaplanet Securities could become.

What “Underwriting the Whole Ecosystem” Means in Practice

Today, most analysts look at Metaplanet Securities and see a captive distribution arm — a platform Metaplanet uses to distribute its own BitBonds to Japanese retail and institutional investors. That is valuable, but it is a relatively contained opportunity.

The Goldman Sachs thesis is something fundamentally larger. It says Metaplanet Securities becomes the underwriting infrastructure for every Bitcoin treasury company in Japan that wants to issue BTC-backed financial products.

Let me make that concrete with a worked example.

A Worked Example: Company X Wants to Issue a BitBond

Imagine it is 2028. The FIEA amendment is fully in effect. Bitcoin is a regulated financial instrument. The 20% tax rate is live. Spot Bitcoin ETFs are trading on the TSE.

A mid-sized Japanese technology company — let’s call it Company X — has accumulated 500 BTC on its balance sheet as a treasury reserve. Its CFO wants to issue a ¥5 billion BTC-backed bond to raise capital for expansion, using the Bitcoin as collateral.

Company X faces an immediate problem. It has never issued a BTC-backed bond before. It doesn’t know:

• How to structure the collateral terms and LTV ratio

• What coupon rate the market will accept for a BTC-backed instrument

• Which investors to approach — institutional fixed income desks, retail through brokerages, or both

• How to draft the FIEA-compliant prospectus covering Bitcoin collateral disclosure

• How to custody and monitor the collateral through the life of the bond

Company X calls Metaplanet Securities.

Metaplanet Securities has already done all of this — for its own account, multiple times, across multiple product structures. It has the FIEA licence, the structuring expertise, the investor relationships, the retail distribution network through the Siiibo platform, and the Bitcoin collateral management infrastructure.

It structures the deal, prices it, builds the investor book, places the bonds with investors, and earns:

• A 1% origination fee on ¥5 billion = ¥50 million at signing

• A 0.3% annual administration fee on ¥5 billion outstanding = ¥15 million per year, recurring

Company X gets its capital. Metaplanet Securities earns fees. And crucially — Metaplanet’s own Bitcoin treasury is not involved at all. This is pure platform revenue, earned from the ecosystem, independent of Metaplanet’s own balance sheet.

  KEY INSIGHT

Metaplanet Securities is not just building a platform to sell Metaplanet’s own Bitcoin bonds. It is building the infrastructure that every Bitcoin treasury company in Japan will eventually need to issue their own Bitcoin-backed financial products. Every fee earned gets recycled into more Bitcoin — raising BTC per share without diluting shareholders. That is the compounding loop no one is currently pricing.

Now Multiply That Across the Ecosystem

Here is where the compounding logic becomes powerful.

Japan currently has Metaplanet as essentially the only significant listed Bitcoin treasury company. But that will not be the case in five years. As the FIEA framework takes effect, as the tax rate drops, as ETFs launch and institutional adoption deepens, the number of Japanese companies holding Bitcoin on their balance sheets will grow.

Each of those companies is a potential issuer of BTC-backed financial products. Each issuance is a potential Metaplanet Securities mandate.

Metaplanet Ventures — the venture investment arm — is already seeding this ecosystem. It has invested in JPYC, Japan’s leading yen stablecoin. It is specifically mandated to invest in Bitcoin financial infrastructure companies across lending, custody, payments, and settlement. Many of those portfolio companies will eventually want to issue their own BTC-backed instruments.

Who will they call to underwrite those instruments? The firm that invested in them, understands their Bitcoin treasury structure, has the regulatory licence, and already has the investor distribution network.

That is the flywheel. Metaplanet Ventures seeds the ecosystem. The ecosystem grows. Metaplanet Securities underwrites the ecosystem’s capital market needs. The fees compound. More fees buy more Bitcoin. More Bitcoin raises BTC per share. The loop tightens.

Three Distinct Revenue Layers — and What They Mean for BTC Per Share

To make this analytically clear, the “underwriting the ecosystem” thesis creates three distinct and additive revenue streams on top of the existing business.

Layer 1 existed from day one. Layer 2 is what Siiibo enables. Layer 3 is the Goldman Sachs thesis — and it is the one that is not yet in any analyst’s model.

Metaplanet’s Bitcoin income generation business already demonstrates the power of the operating revenue model:

This existing engine generates operating cash flow that compounds BTC per share — every yen of operating profit converted into Bitcoin raises BTC per share without any dilution of the equity base. That is the Stack → Flow → Reinvest → Grow loop at the core of Project NOVA.

Now add the Metaplanet Securities third-party underwriting revenue on top. The numbers below are purely illustrative:

At ¥300 billion in third-party underwriting, Metaplanet Securities fee revenue alone would approach the scale of the entire existing Bitcoin income generation business. At ¥1 trillion — still less than 0.1% of Japan’s ¥1,190 trillion savings pool — it exceeds it.

And every yen of that fee revenue, recycled into Bitcoin purchases, raises BTC per share without issuing a single new share.

Why This Is Structurally Different From Just Holding Bitcoin

This is the conceptual shift I want to leave you with.

A pure Bitcoin treasury company’s value is essentially a function of one variable: the Bitcoin price. When Bitcoin goes up, NAV goes up. When Bitcoin goes down, NAV goes down. The investment thesis is directional.

The Goldman Sachs model transforms part of that directional exposure into fee-based operating revenue that is structurally less dependent on Bitcoin’s price at any given moment. Underwriting fees are earned at issuance and annually thereafter. They flow whether Bitcoin is at $100,000 or $60,000. They compound with deal volume, not just with price.

The company that can do this at scale is not just a Bitcoin treasury company. It is a Bitcoin-native investment bank with a Bitcoin treasury attached. That is a fundamentally different valuation proposition — and it is why the mNAV premium investors might rationally pay for that business is considerably higher than for a passive BTC holder.

The Team Behind the Vision

One thing I find analytically underappreciated about Metaplanet’s position is the quality of the team assembled to execute this.

Metaplanet describes its management as “led by alumni of global investment banks and major domestic financial institutions, with integrated expertise across equity, derivatives, structured products, balance-sheet management, and asset management.” The governance structure includes audit professionals from Deloitte Tohmatsu on the board and audit committee, with independent directors holding a majority on each committee.

This is not a startup with a bold vision and no execution capability. This is a team that knows how investment banks work — because many of them built careers inside them. They understand counterparty relationships, structured product design, distribution economics, and regulatory compliance not as abstract concepts but as professional practice.

That matters because the Goldman Sachs parallel is not just a business model analogy. It requires the kind of human capital that builds trusted institutional relationships over time. First-mover advantage in regulatory positioning is valuable. First-mover advantage in institutional relationships is often decisive — because those relationships are built slowly and lost quickly.

Key Risks — Being Honest About What Could Go Wrong

I believe the opportunity here is genuinely significant. But intellectual honesty requires addressing the risks clearly.

Upper House delay or reversal. The FIEA amendment has passed the Lower House but still requires Upper House ratification. While no significant opposition has emerged, political disruptions or election timing could delay or modify the bill. FY2027 implementation should be treated as a base case, not a certainty.

Execution complexity. Metaplanet is simultaneously managing a 40,177 BTC treasury, running an active options income business, integrating a newly acquired securities firm, building an asset management arm in the US, and sourcing venture investments through Metaplanet Ventures. This is a genuinely complex operational build. Organisations that try to do too many things simultaneously sometimes execute none of them well.

Competition from incumbents. SBI Securities, Nomura, Daiwa, and Rakuten Securities will not remain passive if Bitcoin-backed yield products prove commercially attractive. They have larger distribution networks, deeper retail customer bases, stronger domestic regulatory relationships, and greater balance sheet capacity. First-mover advantage buys time — it does not guarantee market leadership.

Bitcoin price dependency. The collateral base of the BitBond ecosystem is Bitcoin. A sustained Bitcoin bear market would compress collateral coverage ratios, reduce issuance capacity, and potentially trigger investor redemptions in BTC-linked products. Conservative loan-to-value discipline can mitigate this risk — but cannot eliminate it.

Investor education at scale. Distributing BTC-backed bonds to Japan’s retail investor base requires building financial literacy that does not yet exist at population scale. Explaining loan-to-value ratios, collateral coverage, and Bitcoin price risk to the same demographic that struggled with Uridashi currency risk is a genuine distribution challenge. It will take time and sustained educational effort.

What to Watch: The Signals That Matter

For investors following this thesis, I track three specific indicators as the key signals of progress.

1. Upper House passage of the FIEA amendment. This is the regulatory foundation. Until it passes, everything downstream remains contingent. Watch the parliamentary calendar for the summer 2026 session.

2. Metaplanet Securities’ first third-party underwriting mandate. The moment Metaplanet Securities underwrites a BitBond or BTC-backed instrument for a company other than Metaplanet, the platform business model is validated. That is the signal that the Goldman Sachs analogy has moved from thesis to evidence.

3. BTC Yield trajectory alongside Metaplanet Securities fee revenue. If platform fee revenue is being recycled into Bitcoin purchases, BTC per share should continue to rise even as the securities business scales. Watch both metrics together in quarterly results — BTC per share growth is the ultimate scorecard.

Final Thoughts

In my previous YouTube video on BitBonds, I argued that the concept represents one of the most structurally compelling financial innovations to emerge from the Bitcoin treasury model. The FIEA amendment and the Siiibo acquisition together move that concept from compelling to executable.

Japan has now made its policy decision. Bitcoin is a financial instrument. The disclosure framework is being built. The tax rate is coming down. The ETF pathway is open. And Metaplanet — almost uniquely among listed Japanese companies — spent the two years before this moment building every piece of infrastructure required to be the first entity to fully capitalise on it.

The Goldman Sachs comparison is instructive not because I think Metaplanet will become Goldman Sachs in scale or breadth, but because it captures the structural ambition. Goldman became powerful not by being the largest company in its economy, but by building the financial infrastructure that every company used to access capital. Metaplanet Securities, in the emerging Japanese Bitcoin treasury finance ecosystem, has the opportunity to occupy exactly that role.

Whether it executes — whether the team, the regulatory timing, the market conditions, and the competitive dynamics all align — is the question that cannot yet be answered. But the framework for it to happen has just, for the first time, been put in place.

For investors thinking in BTC per share terms, watch the Upper House. Watch the first third-party mandate. Watch the mNAV — because if the platform thesis gains market credibility, the premium investors are willing to pay above net asset value will be the first place that shows up.

The rules have changed. The question now is who writes the new playbook.

Thank you for reading this insight and I hope you found it helpful. Check the latest prices of Metaplanet quoted on different exchanges at the link below: Metaplanet Trading Hours

Disclaimer

This article reflects my personal research and opinions and is for informational purposes only. It is not financial advice. I may be wrong, and markets are inherently risky. Always do your own due diligence and consult a licensed financial advisor before making any investment decisions.