During a recent government meeting, experts voiced significant concerns regarding the Securities and Exchange Commission's (SEC) proposed market structure changes, emphasizing the need for careful analysis before implementation. The SEC's interconnected proposals, which lack a comprehensive evaluation of their cumulative effects, could drastically alter market dynamics and potentially render some regulations unnecessary.

One of the key proposals discussed was the modification of tick sizes under Regulation NMS. While there is industry support for a limited adjustment to a half-penny tick size for certain stocks, stakeholders urged the SEC to adopt a data-driven, incremental approach. This would allow for thorough analysis of the changes' effectiveness before further adjustments are made.

Conversely, the SEC's order competition proposal raised alarms due to its potential to introduce operational complexities and risks to market stability. Critics highlighted that the mandated auctions could negatively impact liquidity and execution quality, labeling the proposal as an untested solution to an unproven issue.

Additionally, the SEC's best execution proposal aims to establish a commission-level standard for broker-dealers. However, experts noted that much of this proposal overlaps with existing obligations and may not address any actual problems effectively. They argued that enhancing oversight of self-regulatory organizations and enforcing current rules would be a more prudent approach.

The meeting underscored the importance of prioritizing the interests of asset owners and issuers in policy discussions, as they often lack representation compared to intermediaries. Experts cautioned that any major reforms should be justified by clear evidence of harm to market end users, warning that hasty regulatory changes could lead to unintended negative consequences.

As the SEC considers these proposals, stakeholders are advocating for a thoughtful and empirical approach to ensure the health and efficiency of U.S. capital markets.