Liquidity in the crypto market is increasingly concentrated within a handful of massive trading platforms, creating a market structure that global central bank researchers warn is evolving into a highly indebted “shadow crypto-financial system.”
Facts from CryptoQuant shows that Binance, the world’s largest crypto exchange, cleared more than $1 trillion in trading volume during the first 112 days of 2026.
This is significantly higher than the total of competing platforms such as MEXC, which was approximately $284.9 billion; Bybit at $242.3 billion; Crypto.com at $219.9 billion; Coinbase at $209.3 billion; and OKX for $195.2 billion.
The gap provides a market anchor for a new Financial Stability Institute paper published by the Bank for International Settlements, which said major crypto platforms have expanded beyond trading and custody into yield products, lending, derivatives, staking and token-related services.
The article described many of these trading platforms as “multifunctional cryptoasset intermediaries” (MCIs) because they now combine roles that in the traditional financial world are typically divided between banks, brokers, exchanges and custodians.
As a result, BIS has raised concerns that the crypto trading platforms that attract the greatest liquidity are also becoming the places where users store assets, post collateral, take leverage and pursue returns.
That has turned the current currency concentration into a broader question for regulators: whether platforms built for crypto trading have become financial intermediaries before rules around customer assets, leverage and liquidity risk have caught up.
Liquidity is concentrated where risk increases
Crypto’s trading base is not evenly spread across hundreds of platforms, despite years of exchange failures, enforcement actions and market declines.
According to the BIS paper, there were approximately 200 to 250 active centralized spot exchanges in 2025, but trading remained dominated by a small group of large platforms.
BIS pointed out that Binance accounted for about 39% of global centralized spot volume, while the top 10 exchanges handled about 90% of global trading activity.
The BIS article states that the largest MCIs often operate through subsidiaries or licensed entities in more than 100 jurisdictions. It also cited estimates that the top five MCIs collectively serve approximately 200 million to 230 million unique users, of which 20 million to 34 million use staking or earning products.
That means the biggest crypto exchanges are no longer just places where buyers meet sellers. They become balance sheet hubs for a market that still lacks many of the regulatory protections built into the traditional financial sector.
This structure gives the largest venues power beyond simple market share, as their order books influence pricing and their derivatives determine leverage.
At the same time, their custody systems hold the assets that clients use to move spot, margin, staking and yield products.
Binance’s volume of $1.09 trillion at the start of the year demonstrates the power of that network effect. Traders continue to cluster where liquidity is greatest and execution is most reliable.
Under normal circumstances, that concentration can reduce friction. During stress, a handful of locations can be central to how losses move through the system.
Stock exchanges become financial supermarkets
The business model that made major exchanges commercially powerful is the same model that is now under scrutiny.
A major crypto platform can offer spot trading, perpetual futures, custody, staking, lending, secured lending, portfolio services and yield products under one roof. Some also operate connected token ecosystems or infrastructure linked to their broader platforms.
In the traditional financial sector, these services are usually distributed among institutions with different capital, liquidity, disclosure and conduct rules. Banks, brokers, exchanges, clearinghouses and custodians all sit within specific regulatory lines.
Crypto is moving towards a more integrated model. A user can deposit assets, trade spot tokens, borrow against collateral, open leveraged derivatives positions, and allocate inactive balances to yield products without leaving the platform.
That model keeps the capital within the location. However, it also makes it more difficult for users and regulators to separate trading risks from credit, custody and liquidity risks.
The BIS article states that MCIs that accept customer assets through investment schemes and use them for lending, market making or other activities face risks similar to those of financial intermediaries. These include credit risk, maturity risk and liquidity risk.
The difference is that many crypto platforms do not meet the same prudential requirements as banks or regulated broker-dealers. They may not be subject to comparable capital buffers, liquidity rules, deposit protection, stress tests or resolution frameworks.
The return converts balances into credit exposure
The clearest example is the growth of earn-and-yield products.
These products are often marketed as a way for users to earn passive returns on inactive crypto assets.
However, the economic reality may be much less simple. Depending on the terms, customers can give the platform control over their assets, allowing these funds to be used for staking, lending, market making, margin financing or other activities.
The BIS article states that some arrangements may give customers an unsecured claim against the intermediary rather than a protected right to specific assets. In practice, the user can treat the product as a savings account, while the legal exposure is akin to a loan to the platform.
That distinction becomes crucial in a crisis.
A bank depositor is typically protected by a framework built around capital requirements, liquidity management, deposit insurance and, in extreme cases, access to central bank liquidity.
A crypto exchange customer using a yield product may not have any of these protections. If the platform cannot process the withdrawals or suffers trading losses, the customer may become an unsecured creditor.
The BIS cited the bankruptcy of Celsius Network and FTX as examples of how these weaknesses can surface.
Celsius offered yield products that relied on lending, leverage and liquidity transformation. When market conditions changed and customers wanted to withdraw funds, the platform failed.
On the other hand, FTX exposed another version of the same structural problem, where client assets, associated trading activities and group-level risks became intertwined.
These examples remain important because today’s largest exchanges are larger, more global, and more embedded in the crypto market infrastructure than many failed companies in 2022.
Leverage can transfer stress quickly
The BIS warning also extends beyond customer protection and concerns the market structure.
Crypto derivatives markets are constantly evolving, use automated liquidation engines, and often rely on collateral whose value can drop sharply within minutes. When leverage is concentrated in the same locations that dominate spot liquidity, price shocks can become liquidation events before human traders have time to react.
The BIS cited the October 2025 flash crash as an example of how quickly the system can move. The event caused approximately $19 billion in forced liquidations in the crypto derivatives markets and affected more than 1.6 million traders.
The crash showed how closely linked leverage, collateral, automated risk engines and location concentration have become. Notably, some market observers blamed the October 10 incident on Binance’s practices.
This is because a sharp macro move has hit spot prices, leading to a price drop that has weakened collateral. Subsequently, this weaker collateral led to margin calls, forcing liquidations and amplifying the downward price movement.
That loop is not unique to crypto, but the structure of emerging markets could accelerate it.
Major exchanges are at the heart of that process, because they house the liquidity, collateral accounts and derivatives positions through which the deleveraging takes place. A brief outage, price difference or liquidity shortage on a dominant platform can affect more people than just that platform’s own users. It can affect market prices across the industry.
Regulators are confronted with a business model that has outgrown the stock exchange label
Against this backdrop, the policy challenge is that the largest crypto platforms do not fit neatly into existing categories.
One company can act as an exchange, custodian, broker, lender, staking provider, derivatives platform and wallet infrastructure provider all at the same time. Each activity may fall under a different supervisor, or be completely outside of clear supervision, depending on the jurisdiction.
As a result, the BIS document called for prudential requirements for MCIs engaged in financial intermediation. This could include capital and liquidity buffers, stricter governance standards, stress tests, risk management rules and clearer separation of customer assets.
It also suggested that regulators may need both entity-based and activity-based rules. Entity-based rules would look at the health and structure of the platform as a whole. Activity-based rules would apply to specific services such as lending, custody, staking, derivatives or yield products.
That approach would mark a shift from treating large crypto companies primarily as trading platforms to aligning them more closely with their surrounding financial conglomerates.
This would now raise questions about how they manage balance sheet risk, protect customer assets, deal with liquidity stress and how to manage bankruptcy.
Meanwhile, this issue is becoming more urgent as traditional financial ties to crypto deepen through exchange-traded products, institutional custody, stablecoin reserves and brokerage integrations.
The BIS article warned that as MCIs become more connected to traditional finance, disruptions to major platforms could have consequences beyond the crypto ecosystem.