Interactive Brokers has documented four changes in its IBKR Desktop version 4.0 release notes, last updated on 21 October: more flexible position closing, executions displayed on charts, font sizing and an operating-system-linked colour theme. The most consequential trading change is the ability to prepare closing orders across selected positions from one screen.[1]
Version 4.0 controls
| Feature | Documented choices or behaviour |
|---|---|
| Close amount | 100%, 50%, 25% or customSource 1 |
| Position selection | All or specified instrument types; long/short filters; individual positionsSource 1 |
| Order workflow | Set further order parameters, review the confirmation and select Proceed to submitSource 1 |
| Executions on charts | Display trades for the instrument in the Quote panel chartSource 1 |
| Font sizing | Small, Medium, Large or Extra Large in Display settingsSource 1 |
| Colour theme | System option follows the operating system’s light/dark settingSource 1 |
After submission, a status window reports the closing orders. The tool creates orders; the percentage selected is not a guarantee that every order will fill, at one price or simultaneously. Users still choose the relevant account and order parameters before the confirmation step.[1]
IBKR’s download page separates production and beta channels and describes the beta as a pre-release build that updates when a new version is available at login. The version 4.0 note itself does not identify a universal production rollout date. Customers therefore need to distinguish the documented feature set from the build and channel actually installed.[2][1]
Sources & further reading
- IBKR Desktop Version 4.0 release notes Interactive Brokers · 21 Oct 2026 · Accessed 26 Oct 2026
- IBKR Desktop download: production and beta software channels Interactive Brokers · Accessed 26 Oct 2026