OneChronos logo

OneChronos

Contact Sales

US Equities - Conditional

Conditional FAQ

    How do I submit a conditional indication at OneChronos?

    What does an invitation to firm up look like?

    How do I submit a firm up order?

    What aspects of the firm up order must match that of the original conditional indication?

    Does hybrid status of a Nexus firm up order need to match the hybrid status of the original conditional Nexus order?

    How long is an invitation period?

    How many firm ups can be associated with an invitation?

    Can firm up responses be cancel replaced?

    What orders can trigger a conditional invitation?

    What orders can firm up orders match against?

    Can standard firm orders opt to not match against firm up orders?

    Can I target my conditional indication at a specific Nexus?

    Can a conditional indication be a Nexus hybrid order?

    How do I certify for the conditionals FIX spec?

Glossary

Conditional indication
An indication that the participant wants to interact with the order book on a conditional basis.
Conditional firm up invitation
An indication that the participant wants to interact with the order book on a conditional basis.
Firm up order
Regular orders that are the response to a conditional firm up invitations.
OneChronos logo

OneChronos

Asset Classes

US EquitiesEuropean EquitiesFX

Documentation

Getting StartedExpressive BiddingMarket StructureFIX SpecUser Manual

Company

AboutCareersPodcastNewsletter

Support

Contact Sales

Legal

Privacy PolicyTerms of UseCookie PolicyAcceptable Use PolicyBusiness Continuity PlanRegulatory Disclosures
Cookie Settings

OCX Group Inc. is an independent, venture backed company that uses cutting edge technological paradigms to enable the next generation of electronic trading through its separate subsidiary entities. Contact us at [email protected].

OneChronos ® Markets LLC is a wholly-owned broker-dealer that operates a U.S. equities ATS and is a subsidiary of OCX Group Inc. Member FINRA/SIPC: www.finra.org. Check the background of OneChronos Markets LLC on FINRA’s BrokerCheck. A copy of OneChronos Markets LLC’s ATS-N is available here.

OneChronos Markets FX LLC will operate a Spot FX Platform and is a subsidiary of OCX Group Inc.

Subject to regulatory approval, OneChronos Markets UK Limited will operate a Multilateral Trading Facility to trade UK and Swiss equities, and its wholly owned subsidiary OneChronos Markets NL B.V. will operate a Multilateral Trading Facility to trade European equities.

Copyright © 2025 OneChronos. All rights reserved.