MIAX Futures Sets May 18 Trade-Date Launch for Financial Futures on Onyx

MIAX Futures said on May 6 that it will run a final mock trading session on May 9 ahead of the upcoming launch of financial futures on its Onyx trading platform on May 17 for the May 18 trade date. The exchange said firms can use the session to test order entry, cancel and replace flows, drop copy, market data, and retransmission services through its production network connections.

According to the alert, the initial products available for testing are TBQ, or Tini B100 Index Futures, TBX, or Tini B500 Index Futures, and BX, or B500 Index Futures. MIAX also laid out the test-day schedule, including pre-open connectivity, live order windows, extended trading sessions, and the regular session, giving participants a concrete checklist before the platform goes live.

This is a trading-infrastructure update rather than a headline macro story, but it is still meaningful. New futures venues and product launches matter when they add another route for index exposure, price competition, and execution choice. The more serious point is operational: firms need symbol, feed, and OCC test readiness before launch day.

Why it matters

For active traders and clearing participants, launch prep determines whether a new venue becomes usable from day one or sits on the sidelines because of connectivity gaps. If MIAX executes cleanly, the new contracts could add another futures access point for short-term index traders.

What to watch next

Watch whether the May 9 mock session surfaces technical issues and whether the May 18 trade-date rollout happens on schedule. The next signal is whether liquidity providers show up early enough to make the new contracts meaningfully tradable.