S3 Connects to Bruce Markets' U.S. Equities Data Feed, Strengthening Overnight Execution Analytics

Adding Bruce ATS market data feed broadens S3 clients' comprehensive view of overnight prices of U.S. equities

CHICAGO, Oct. 14, 2026 /PRNewswire/ -- Bruce Markets, which operates the overnight U.S. equities trading venue Bruce ATS, today announced that S3, the industry-leading provider of compliance and trade analytics software, has connected to Bruce ATS' market data feed. The data integration provides S3's clients with an even more comprehensive view of overnight prices of U.S. equities and liquidity, helping them stay ahead of evolving market practices and prepare for potential regulatory expectations around off-hours trading.

"Bruce ATS now represents more than one-fifth of reported overnight notional across the three leading ATSs, making visibility into our market increasingly important to evaluating execution quality," said Jason Wallach, CEO of Bruce Markets. "Competition and choice work best when participants can see where liquidity is available, and S3's addition of our market data allows its clients to make more informed comparisons as the overnight market continues to grow."

The integration follows Bruce Markets' recently announced plans to launch the first continuous weekend U.S. equities trading session (subject to regulatory review) amid increasing demand for global 24/7 access to U.S. equities. According to the Bruce Q2 Overnight Market Review, activity across the three leading overnight ATSs reached 11.14 billion shares and $391.2 billion in notional value in Q2 2026, up 34% and 59% from Q1, respectively.

Bruce ATS outpaced that growth, with executed volume increasing 144% to 1.16 billion shares and executed notional rising 105% to $49.03 billion. Bruce's share of reported overnight notional across those venues has increased from 9.7% in Q1 2026 to over 20% in Q4 to date.

"As overnight trading continues to expand, S3's clients expect a comprehensive and accurate view of their trading performance across the full trading day," said Mark Davies, Co-Founder and CEO of S3. "Adding Bruce ATS data gives them greater visibility and a more complete picture of execution quality."

As U.S. equities move toward always-on markets, a competitive, multi-venue ecosystem gives brokers, traders and liquidity providers multiple pathways to see and reach liquidity across changing market conditions. S3's integration with Bruce ATS gives clients the visibility they need to evaluate execution quality as trading hours continue to expand.

About Bruce Markets

Bruce Markets operates Bruce ATS™, a U.S. equities alternative trading system enabling overnight trading from 8:00 PM to 4:00 AM ET. Underpinned by exchange-grade technology and market rules, led by industry veterans and backed by leading firms from across the trading ecosystem, Bruce provides a high-performance, resilient venue that bridges the U.S. after-hours and pre-market sessions. By providing a credible source of after-hours liquidity for brokers and investors, and leading the evolution of always-available markets, Bruce brings needed competition to the ecosystem and is redefining after-hours trading worldwide. To learn more, visit www.brucemarkets.com.

About S3

S3 is a full-service compliance and trade analytics software company that serves many of the world's largest financial institutions and exchanges. S3's sleek, easy-to-use platform features trade analysis tools such as Global Best Ex & TCA for Options and Equities, as well as regulatory reporting tools for Trade Surveillance, SEC Rules 605 and 606 reporting, and Consolidated Audit Trail (CAT) reporting.

Media Contacts

Forefront Communications for Bruce Markets
[email protected]

S3
Sarah Phillips
[email protected]

SOURCE Bruce Markets