About a-team Marketing Services
The knowledge platform for the financial technology industry

A-Team Insight Blogs

TMX Group Expands to US with Launch of AlphaX Alternative Trading System

Subscribe to our newsletter

TMX Group has announced the launch of AlphaX US, a new Alternative Trading System (ATS) venue designed to enhance execution quality for US-listed securities. This marks the first international expansion for TMX Group’s Markets division beyond Canada.

AlphaX US will exclusively trade securities governed by Reg NMS, including common stocks, exchange-traded funds, and American depository receipts. Access to the platform will be limited to FINRA-registered broker-dealers.

Heidi Fischer, President, TSX AlphaX US, explains to TradingTech Insight the background behind the launch of the new venue: “TMX Group’s expertise in Canada has always centred around improving markets and enhancing execution quality, and that focus was integral to our approach in launching AlphaX US,” she says. “While the U.S. ATS landscape has many diverse types of venues, there is a smaller but growing segment of newer, standalone ATS platforms dedicated to execution quality and innovation. This segment has expanded significantly in recent years, and TMX Group sees it as a growth area that will continue to evolve. With AlphaX US, the goal is not simply to serve as an addition but to complement this space by introducing a unique venue with its own innovations, appealing to both our sell-side participants and their buy-side clients.”

Positioned as a high-performance trading venue, AlphaX US combines innovative functionality with ease of use, offering customisable options, seamless implementation, and advanced analytics to the broker-dealer community. The system is designed to support execution performance with features tailored to market participants’ needs.

“When designing AlphaX US, we focused on two key goals: enhancing execution quality and fostering seamless partnerships with participants,” says Fischer. “We wanted to create a platform that’s easy to implement, requiring minimal infrastructure changes, while also offering customisation options for sell-side participants.”

She continues: “AlphaX US is a periodic auction venue with frequent auctions that closely mimic continuous trading. What sets us apart is the integration of counterparty selection and segmentation within the auction model. Additionally, we’ve innovated on execution pricing. Instead of settling matches at a single price or the NBBO midpoint, we price at the midpoint of the buyer’s and seller’s prices. This approach provides greater price improvement opportunities and maximises execution for all possible shares within an event.

Fischer explains that the AlphaX Hub, a GUI allowing participants to set up parameter trees for routing preferences, has been introduced to streamline order management. “This reduces the need for frequent order cancellations and re-entries,” she says. “Participants can also configure interactions akin to private or hosted rooms but within our main venue. Our methodology prioritises price/time and ensures trades are executed at the best price, blending private interactions with broader market dynamics for optimal outcomes.”

Trading on AlphaX US will align with US equity market hours and holiday schedules, with order entry available 60 minutes prior to market open and continuing throughout the trading day.

Subscribe to our newsletter

Related content

WEBINAR

Recorded Webinar: Navigating the Build vs Buy Dilemma: Cloud Strategies for Accelerating Quantitative Research

For many quantitative trading firms and asset managers, building a self-provisioned historical market data environment remains one of the most time-consuming and resource-intensive steps in establishing a new research capability. Sourcing data, normalising symbologies, handling corporate actions and maintaining infrastructure can take months and absorb significant budget before a single model is tested. At the...

BLOG

The Race to the Trading Everything App

By Jon Light, Senior Director of Product Management at Devexperts. A major shake-up in retail trading venues is underway due to the expansion of crypto exchanges, neobanks, and zero-commission brokers into each other’s traditional territories. As the lines between these businesses continue to blur and users gain more access to a variety of assets and...

EVENT

ExchangeTech Summit London

A-Team Group, organisers of the TradingTech Summits, are pleased to announce the inaugural ExchangeTech Summit London on May 14th 2026. This dedicated forum brings together operators of exchanges, alternative execution venues and digital asset platforms with the ecosystem of vendors driving the future of matching engines, surveillance and market access.

GUIDE

AI in Capital Markets Handbook 2026

AI adoption in capital markets has moved into a more disciplined phase. The priority is now controlled deployment: where AI can be used safely, where it can deliver measurable value, and how outputs can be governed, monitored and evidenced. The 2026 edition of the AI in Capital Markets Handbook examines how AI is being applied...