Release notes

Releases summary

What's new

• Centroid FIX connector — Added the CENTROID-FIX-QUOTES and CENTROID-FIX-TRADES liquidity connector types. Centroid sessions authenticate with a new Username session parameter, sent in FIX tag 553 alongside the password, and trade sessions require an Account session parameter, which is sent in FIX tag 1 on every order.
• Holidays WebSocket channel (admin) — Added a holidays channel to the admin WebSocket API that streams holiday additions, updates and deletions in real time, with an optional snapshot on subscribe.
• Closed volume on trades — Trade records now carry cq, the volume the trade closed against the position it acted on and the volume its profit was realized on. It is returned by Trade History and streamed on the trade channels of both the public and the admin API. Trades executed before this release report cq as 0. The pp field is now documented as the average open price the trade's profit was measured from.
• Symbol exchange type is immutable (admin) — A symbol update that switches between OTC and exchange-traded margin calculation modes is now rejected. Within the same classification the margin calculation mode can still be changed freely.

Bug fixes

• The profit conversion rate on a trade record now matches the rate the trade's profit was converted at; the two could differ when a group's currency conversion was reconfigured between a position being opened and a later fill on it.
• An exchange symbol now keeps a single net position on accounts whose group is configured for hedging, since exchange trading is netting-only.
• The admin symbol listing now follows a symbol that is moved to a different path: the symbol is listed under its new path, and it disappears from a group whose symbol masks no longer match it.
• Realized P&L excludes commissions and fees — Realized P&L is now the price result of closed volume — profit plus swaps — on every account, regardless of the commission charge mode. Instant commissions and fees previously entered the realized figure while Daily and Monthly ones did not; they continue to move the balance and to accumulate in the commission and fee totals.

Misc

• A reversal trade now reports the average open price of the position it closed as the position price, instead of repeating the execution price.
• Admin position creation no longer debits commission and fee from the account balance; those charges are recorded when the original position closes.
• Admin WebSocket subscriptions now always answer with a snapshot message, empty where the subscriber has no matching entities, instead of sending no snapshot at all.
• Logging — Admin cash and asset transfer requests now record the originating account, the source and forwarded IP addresses, and the client application name and version. Rejected symbol add and update requests now log the reason for the rejection. 
• Documentation — The liquidity connector guide now documents symbol mask evaluation order, how ConnectorSymbolName and MarketDepth are resolved against entry filters, and the 31-character limit on the substituted Account value.

---

What's new

• We have added a 'Margin Calls' dashboard widget with live updates, as well as a 'View Positions' option in the context menu that opens the Account Overview on the 'Positions' tab.

  

• The Symbol Mask feature in Groups->Commissions, Groups->Symbols and Holidays now offers live search results: plain text lists of matching symbols and a mask preview showing exactly what will be selected. Masks that pin a full symbol path now match correctly, rather than applying the wrong symbol profile to order-form limits.

  

Bug fixes

• Cash Transfers in Admin Portal now record the time they are submitted instead of date when users open the form and start the transfer flow.

---

What's new

• We have added support for Last Look on the MT5 Gateway ExecutionDelay parameter. Brokers can now configure a per-rule price-movement gate (asymmetric or symmetric) that rejects B-book client market orders if the raw mid-price moves beyond a configured pip threshold during the delay window. Optional volume exemption and degraded-tick-rate extended delay are also supported. The new fields are available in the Dynamic Profiles UI and in Excel import/export for MT5 gateways only; MT4 bridges continue to work unchanged.

---

Bug fixes

• We have fixed an issue where floating leverage symbol groups were ignored on servers whose configuration defines symbol groups but no floating leverage rules, and were dropped from the configuration file on the next rule change.

Misc

• Minor stability improvement

---

Misc

• small logging changes 

---

What's new

• We have greatly improved processing performance and reduced memory consumption

---

Misc

• We have improved the Trade Blotter report by splitting the "A-Book Quantity" column into two distinct columns: A-Book Quantity (Attempted) — the hedge size requested to the LP, and A-Book Quantity (Filled) — the actual volume filled by the LP. This makes it easy to identify rejected hedges where the attempted size is non-zero but the filled size is zero.

---

What's new

• We have added the MT5 Deal ID / MT4 Order ID to the FIX drop copy TradeCaptureReport on the Tapaas session, so clients can reconcile drop copy trades against their MT bridge feed.

Bug fixes

• We have fixed an issue where trade volumes on the FIX drop-copy feed were rounded down to whole lots. Fractional-lot trades (e.g. 0.1 lots) now report their correct volume in tag 32 (LastQty) instead of 0.

---

Misc

• We have improved liquidity-provider resilience: when a PrimeXM/PXM feed sends a quote update or withdrawal for a price we are not currently holding, the affected instrument is now re-synced on its own instead of dropping and reconnecting the entire liquidity-provider session. This removes the continuous reconnect loop seen with the PXM feed and keeps all other instruments streaming uninterrupted.

---

Bug fixes

• We have improved MT gateway resilience so that a symbol's price stream to MT5 recovers automatically after the gateway briefly loses and re-establishes its matching-engine connection, instead of staying stuck until a gateway restart.

---

Bug fixes

• We have resolved the spurious error messages reported by the MT5 External Order Listener plugin when it runs on a History (non-main) server after an upgrade, and hardened plugin startup to prevent a crash seen in certain builds.

---

What's new

• We have added the ability to send a client's account group name in the Account field (tag 1) of orders forwarded to a liquidity provider. LPs that expect a string identifier now receive it directly, with a single configuration parameter and no duplicate tag

---

Misc

• We have introduced Prometheus thread metrics for  MT5Coverage,plugin. Component now collects per-thread latency histograms, memory usage gauges, and a component-level last_update timestamp, exposing them via the heartbeat response to the Configuration API every 5 seconds.

---

What's new

• We have added an opt-in performance diagnostics parameter to the MT5 DataWarehouse plugin that logs per-hook latency on demand, helping diagnose throughput issues without impacting normal operation when disabled.

---

Misc

• Saving artifacts to help with crash investigations