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Preparing for TXSE: What Broker-Dealers Need to Know

Devon Edwards
August 2026
8 min read

The Texas Stock Exchange (TXSE) announced a launch window of July 2 to 17, 2026, the first new national stock exchange in the United States in over a decade. Based in Dallas, TXSE represents a significant shift in American capital markets. That window has now passed, which changes the deadline and nothing else: a broker-dealer that is not connected yet has exactly the same preparation ahead of it.

Why TXSE Matters

TXSE is not another alternative trading system. It is a registered national securities exchange that will compete directly with NYSE and NASDAQ, backed by institutional investors and headquartered in Dallas.

For broker-dealers, TXSE offers several compelling advantages: lower listing fees, a business-friendly regulatory environment, and proximity to the rapidly growing Texas financial ecosystem. With major corporations relocating to Texas and the state's economy continuing to expand, TXSE is positioned to capture significant market share.

Connectivity Requirements

TXSE will support FIX 5.0 protocol for order entry and execution. If your firm is still running legacy FIX 4.2 or 4.4 infrastructure, you'll need to upgrade. The good news is that FIX 5.0 offers significant improvements in message handling, session management, and security.

Key connectivity considerations include:

  • •Protocol Support: FIX 5.0 SP2 with custom extensions for TXSE-specific functionality
  • •Network Options: Direct connectivity via co-location in Dallas, or through certified connectivity providers
  • •Latency Targets: Confirm the venue's published acknowledgment targets before you design to a number
  • •Redundancy: Dual-path connectivity requirements for production environments

Certification Process

Exchange certification for a new venue generally runs in phases. Expect something along these lines, and confirm the specifics against TXSE's own published materials rather than this page:

  1. 1.Technical Certification: Validate FIX connectivity, message formatting, and session management
  1. 2.Functional Testing: Order entry, execution, cancellation, and modification workflows
  1. 3.Risk Controls: Pre-trade risk checks, position limits, and circuit breakers
  1. 4.Production Readiness: Full end-to-end testing in production-like environment

Timeline and Next Steps

A workable sequence for a broker-dealer, counted forward from wherever you are standing rather than backwards from a date that has already gone by. Two to three quarters is a realistic span for a firm starting cold:

  • •Phase 1: Assess current infrastructure and identify gaps
  • •Phase 2: Begin the FIX 5.0 upgrade if needed; engage connectivity providers
  • •Phase 3: Technical certification and functional testing
  • •Phase 4: Production readiness testing and staff training
  • •Phase 5: Final preparations and go-live planning
  • •Cutover: Your own date, agreed with the venue

How Kilobytez Can Help

Kilobytez is a software firm in Prosper, TX, about forty minutes from where TXSE is headquartered. We have no relationship with the exchange, no certification against it, and no TXSE engagements yet. What we have is hands-on hedge fund platform experience and the willingness to read a specification properly before quoting on it.

The preparation work we offer is infrastructure assessment, FIX 5.0 migration planning, certification test harnesses, and launch runbooks. If your requirement is a vendor who has already carried a firm through an exchange certification, that is not us, and we would rather say so here than on the third call.

Topics

  • TXSE
  • Texas Stock Exchange
  • FIX 5.0
  • broker-dealer
  • exchange connectivity
  • certification

Certification Process

Illustrative · confirm against TXSE’s published materials
  1. 1Technical CertificationValidate FIX connectivity, message formatting, and session management
  2. 2Functional TestingOrder entry, execution, cancellation, and modification workflows
  3. 3Risk ControlsPre-trade risk checks, position limits, and circuit breakers
  4. 4Production ReadinessFull end-to-end testing in production-like environment

Timeline and Next Steps

Fills as you scroll
  1. July 2 to 17, 2026

    The launch window TXSE announced

    That window has now passed, which changes the deadline and nothing else.
  2. Phase 1

    Assess current infrastructure and identify gaps

  3. Phase 2

    Begin the FIX 5.0 upgrade if needed; engage connectivity providers

  4. Phase 3

    Technical certification and functional testing

  5. Phase 4

    Production readiness testing and staff training

  6. Phase 5

    Final preparations and go-live planning

  7. Cutover

    Your own date, agreed with the venue

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