SKN | Why Wall Street Is Choosing Private Blockchains Over Public Ledgers

Key Points:

• Banks favor private blockchains over public ones due to privacy concerns.

• Open ledgers expose trading strategies and increase market risk.

• Tokenization is still growing, but likely on permissioned systems.

Transparency vs Institutional Reality

Don Wilson, founder of DRW, argues that public blockchains fundamentally clash with how financial institutions operate.

Unlike retail users, large asset managers cannot afford to have every transaction visible. Publishing trades on open ledgers could expose strategies, move markets prematurely and undermine fiduciary responsibility to clients.

Why Public Blockchains Fall Short

Public networks like Ethereum are built on transparency, where all transactions are visible. While this is a strength in decentralized systems, it becomes a liability for institutions handling large trades.

If a major investor begins selling a position, other market participants could detect the pattern and react, driving prices against them. This creates inefficiencies and increases execution costs.

Risk of Front-Running and Market Impact

Another major concern is front-running—the ability for others to anticipate and act on pending transactions. In highly transparent systems, this risk is amplified, making them unsuitable for traditional financial markets that rely on controlled execution environments.

Wilson emphasized that these structural issues, rather than the technology itself, are the main barrier to institutional adoption of public blockchains.

Rise of Private and Permissioned Networks

Instead of public chains, banks are increasingly building or adopting private, permissioned blockchain systems. These networks restrict access, allowing only authorized participants to view and validate transactions.

For example, JPMorgan Chase has developed its own blockchain infrastructure tailored to institutional needs, focusing on privacy, compliance and control over data.

Tokenization Still Moving Forward

Despite skepticism toward open ledgers, institutions remain highly interested in tokenization—the process of bringing real-world assets like stocks and bonds onto blockchain systems.

However, Wilson expects this evolution to occur on private networks that better align with existing financial market structures, rather than fully transparent public chains.

A Different Future for Blockchain in Finance

The takeaway is clear: Wall Street is not rejecting blockchain—it is reshaping it.

As adoption grows, the industry is likely to favor hybrid or private systems that balance innovation with the core requirements of institutional finance: privacy, efficiency and risk management.