Release notes

Fix Server


26.7.105

16 Jul 2026

What's new

  • We have added a new SetAccountId configuration API command that updates a session's account ID at runtime without disconnecting the session.

26.7.104

10 Jul 2026

What's new

  • More transparent markup reporting — Taker markup is now reported as a detailed breakdown rather than a single combined figure. You can now see exactly how each markup was built up — including the price band, bid/ask side, and the minimum and maximum spread components — in your trade records and reporting. This gives you clearer visibility into how pricing is applied to every fill.

Misc

  • More reliable trade reporting — We've improved how cancelled, expired, and rejected orders are cleaned up, eliminating occasional spurious warnings and making trade record reporting more consistent.
  • We have improved how the FIX server handles the account/order/group tag on order entry: an overly long account or group value is now trimmed to fit rather than causing the whole order to be rejected, so affected orders are accepted and the related error is no longer written to the logs.

26.7.101

02 Jul 2026

What's new

  • We have introduced support for string-based trading account identifiers. Order flow now carries an alphanumeric account, order id, and group end-to-end (from the client FIX session all the way to the liquidity provider), instead of being limited to numeric logins, and brokers can now set hedging multipliers per string account.

26.6.98

12 Jun 2026

Misc

  • Internal release, no new functionality

26.6.95

03 Jun 2026

Misc

    •  We have fixed an issue where a session-level MarketDataThrottling parameter on a quote session was applied as a single shared budget across every subscribed symbol. Each symbol now gets its own independent throttling budget derived from the session-level default

26.5.94

30 May 2026

What's new

  • We have added possibility to pass group names to Liquidity providers

26.5.92

22 May 2026

Misc

  • Log files have daily rotation

26.5.90

14 May 2026

Bug fixes

  • We have fixed an issue where changing a FIX session symbol's market data pool via the Configuration would silently stop market data flowing to the connected client.

26.5.89

12 May 2026

Misc

  • We have improved how the FixServer recovers from corrupt persistent delivery files.

26.5.86

05 May 2026

Misc

  • We have increased the maximum supported length of the FIX taker client_group name from 31 to 63 characters, so longer group names are no longer silently truncated and per-group markup overrides are applied correctly on every fill.

26.4.84

30 Apr 2026

What's new

  • We have added possibility to set markups and Min/Max spread per group (group information arrives in configurable tags)

26.4.83

24 Apr 2026

Bug fixes

  • We have fixed a potential stale price issue when Matching Engine gets disconnected