Bruce ATS Hits 20% Overnight Share as S3 Adds Its Data Feed
Chicago – October 14, 2026 -- Bruce ATS has raised its share of reported overnight U.S. equities notional across the three leading alternative trading systems from 9.7% in Q1 2026 to over 20% in Q4 to date, and compliance and trade analytics provider S3 has now connected to its market data feed.
Bruce Markets, which operates the overnight venue, said the integration gives S3 clients a more comprehensive view of overnight U.S. equity prices and liquidity. Bruce Markets also said the feed helps clients prepare for potential regulatory expectations around off-hours trading.
Bruce ATS volume grew 144% in Q2 2026, outpacing the overnight market
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. That was up 34% and 59% from Q1, respectively.