diff --git a/packages/perps-controller/CHANGELOG.md b/packages/perps-controller/CHANGELOG.md
index aa75828e2e..2e7dbf0a5a 100644
--- a/packages/perps-controller/CHANGELOG.md
+++ b/packages/perps-controller/CHANGELOG.md
@@ -9,6 +9,8 @@ and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0
 
 ### Added
 
+- **BREAKING:** Add `positionsSideFilter`, `positionsSortField`, and `positionsSortDirection` to the flat `ProLayoutPreferences` object (defaults `'all'`, `'positionValue'`, `'desc'`) so Pro Positions/Orders panel sort and side-filter preferences persist across markets and app restarts via the existing `getProLayoutPreferences()` / `setProLayoutPreferences(patch)` API; export `ProPositionsSideFilter`, `ProPositionsSortField`, and `ProPositionsSortDirection` ([#9838](https://github.com/MetaMask/core/pull/9838))
+  - Consumers that construct a full `ProLayoutPreferences` object (instead of using `DEFAULT_PRO_LAYOUT_PREFERENCES`, the getter, or the patch setter) must include the new fields. Persisted state that predates them remains valid at runtime because the getter/selector merge over defaults.
 - **BREAKING:** Add strategy placement order types to `OrderType`: `twap`, `scale`, and `chase`, placeable through `placeOrder` alongside the existing `market`, `limit`, and trigger types ([#9832](https://github.com/MetaMask/core/pull/9832))
   - `OrderType` is a wider union again, so — exactly as for the trigger types added in 11.0.0 — any consumer signature that narrows it back to a smaller set no longer accepts a value typed `OrderType`. Such signatures must widen to `OrderType` or narrow explicitly at the call site.
   - A strategy placement expands one request into an execution schedule rather than a single resting order, so `OrderResult.orderId` carries a _handle_ — a venue TWAP id, or a client-generated group/session id — rather than an exchange order id. Its documentation says so; the individual exchange ids are in `childOrderIds`.
diff --git a/packages/perps-controller/src/PerpsController.ts b/packages/perps-controller/src/PerpsController.ts
index aa3492a67b..243d6d921e 100644
--- a/packages/perps-controller/src/PerpsController.ts
+++ b/packages/perps-controller/src/PerpsController.ts
@@ -250,7 +250,12 @@ export {
   DEFAULT_PERPS_MODE,
   DEFAULT_PRO_LAYOUT_PREFERENCES,
 } from './constants/perpsConfig.js';
-export type { ProLayoutPreferences } from './constants/perpsConfig.js';
+export type {
+  ProLayoutPreferences,
+  ProPositionsSideFilter,
+  ProPositionsSortDirection,
+  ProPositionsSortField,
+} from './constants/perpsConfig.js';
 
 /**
  * State shape for PerpsController
diff --git a/packages/perps-controller/src/constants/perpsConfig.ts b/packages/perps-controller/src/constants/perpsConfig.ts
index 1b2f713139..8ea127d834 100644
--- a/packages/perps-controller/src/constants/perpsConfig.ts
+++ b/packages/perps-controller/src/constants/perpsConfig.ts
@@ -486,19 +486,44 @@ export enum PerpsMode {
   Pro = 'pro',
 }
 
+/**
+ * Side filter for the Pro Positions/Orders panel (long/short/all).
+ *
+ * Shared across markets via `proLayoutPreferences.positionsSideFilter`.
+ */
+export type ProPositionsSideFilter = 'all' | 'long' | 'short';
+
+/**
+ * Sort fields available on the Pro Positions list.
+ */
+export type ProPositionsSortField =
+  | 'positionValue'
+  | 'unrealizedPnl'
+  | 'fundingRate';
+
+/**
+ * Sort direction for the Pro Positions list.
+ */
+export type ProPositionsSortDirection = 'asc' | 'desc';
+
 /**
  * Pro-mode layout preferences (network-independent).
  *
  * Flat object that persists across markets (unlike the per-market
  * `tradeConfigurations`). `chartExpanded` and the `*Position` fields are
- * reserved for future container-position UI and are kept here now so no
- * state-shape migration is needed when that UI ships.
+ * reserved for future container-position UI. `positionsSideFilter` /
+ * `positionsSortField` / `positionsSortDirection` back the Positions/Orders
+ * panel sort and side filter so they survive market navigation and app
+ * restarts.
  */
 export type ProLayoutPreferences = {
   orderBookExpanded: boolean;
   chartExpanded: boolean;
   orderBookPosition: 'left' | 'right';
   orderFormPosition: 'left' | 'right';
+  positionsSideFilter: ProPositionsSideFilter;
+  positionsSortField: ProPositionsSortField;
+  positionsSortDirection: ProPositionsSortDirection;
 };
 
 /**
@@ -513,6 +538,9 @@ export const DEFAULT_PRO_LAYOUT_PREFERENCES: ProLayoutPreferences = {
   chartExpanded: false,
   orderBookPosition: 'left',
   orderFormPosition: 'right',
+  positionsSideFilter: 'all',
+  positionsSortField: 'positionValue',
+  positionsSortDirection: 'desc',
 };
 
 /**
diff --git a/packages/perps-controller/src/index.ts b/packages/perps-controller/src/index.ts
index 4e1b7bf80e..d19405776e 100644
--- a/packages/perps-controller/src/index.ts
+++ b/packages/perps-controller/src/index.ts
@@ -44,6 +44,9 @@ export type {
   PerpsControllerActions,
   PerpsControllerEvents,
   ProLayoutPreferences,
+  ProPositionsSideFilter,
+  ProPositionsSortDirection,
+  ProPositionsSortField,
 } from './PerpsController.js';
 export type {
   PerpsControllerCalculateFeesAction,
diff --git a/packages/perps-controller/tests/src/PerpsController.configuration.test.ts b/packages/perps-controller/tests/src/PerpsController.configuration.test.ts
index ecdfd09ad7..d5de543eb8 100644
--- a/packages/perps-controller/tests/src/PerpsController.configuration.test.ts
+++ b/packages/perps-controller/tests/src/PerpsController.configuration.test.ts
@@ -694,12 +694,15 @@ describe('PerpsController', () => {
   });
 
   describe('pro layout preferences', () => {
-    it('defaults to collapsed order book, collapsed chart, and reserved positions', () => {
+    it('defaults to collapsed order book, collapsed chart, reserved positions, and positions sort/filter defaults', () => {
       expect(controller.getProLayoutPreferences()).toEqual({
         orderBookExpanded: false,
         chartExpanded: false,
         orderBookPosition: 'left',
         orderFormPosition: 'right',
+        positionsSideFilter: 'all',
+        positionsSortField: 'positionValue',
+        positionsSortDirection: 'desc',
       });
     });
 
@@ -711,6 +714,9 @@ describe('PerpsController', () => {
         chartExpanded: false,
         orderBookPosition: 'left',
         orderFormPosition: 'right',
+        positionsSideFilter: 'all',
+        positionsSortField: 'positionValue',
+        positionsSortDirection: 'desc',
       });
     });
 
@@ -718,12 +724,40 @@ describe('PerpsController', () => {
       controller.setProLayoutPreferences({ orderBookExpanded: true });
       controller.setProLayoutPreferences({ orderBookPosition: 'right' });
       controller.setProLayoutPreferences({ orderFormPosition: 'left' });
+      controller.setProLayoutPreferences({ positionsSideFilter: 'long' });
+      controller.setProLayoutPreferences({
+        positionsSortField: 'unrealizedPnl',
+        positionsSortDirection: 'asc',
+      });
 
       expect(controller.getProLayoutPreferences()).toEqual({
         orderBookExpanded: true,
         chartExpanded: false,
         orderBookPosition: 'right',
         orderFormPosition: 'left',
+        positionsSideFilter: 'long',
+        positionsSortField: 'unrealizedPnl',
+        positionsSortDirection: 'asc',
+      });
+    });
+
+    it('updates sort field without clobbering sort direction', () => {
+      controller.setProLayoutPreferences({
+        positionsSortField: 'fundingRate',
+        positionsSortDirection: 'asc',
+      });
+      controller.setProLayoutPreferences({
+        positionsSortField: 'unrealizedPnl',
+      });
+
+      expect(controller.getProLayoutPreferences()).toEqual({
+        orderBookExpanded: false,
+        chartExpanded: false,
+        orderBookPosition: 'left',
+        orderFormPosition: 'right',
+        positionsSideFilter: 'all',
+        positionsSortField: 'unrealizedPnl',
+        positionsSortDirection: 'asc',
       });
     });
 
@@ -746,6 +780,9 @@ describe('PerpsController', () => {
         chartExpanded: false,
         orderBookPosition: 'left',
         orderFormPosition: 'right',
+        positionsSideFilter: 'all',
+        positionsSortField: 'positionValue',
+        positionsSortDirection: 'desc',
       });
     });
   });
diff --git a/packages/perps-controller/tests/src/selectors.test.ts b/packages/perps-controller/tests/src/selectors.test.ts
index 220fede9c5..01983cd655 100644
--- a/packages/perps-controller/tests/src/selectors.test.ts
+++ b/packages/perps-controller/tests/src/selectors.test.ts
@@ -636,6 +636,9 @@ describe('PerpsController selectors', () => {
       chartExpanded: false,
       orderBookPosition: 'left',
       orderFormPosition: 'right',
+      positionsSideFilter: 'all',
+      positionsSortField: 'positionValue',
+      positionsSortDirection: 'desc',
     };
 
     it('returns the pro-mode layout preferences', () => {
@@ -644,6 +647,9 @@ describe('PerpsController selectors', () => {
         chartExpanded: true,
         orderBookPosition: 'right' as const,
         orderFormPosition: 'left' as const,
+        positionsSideFilter: 'long' as const,
+        positionsSortField: 'unrealizedPnl' as const,
+        positionsSortDirection: 'asc' as const,
       };
       const state = {
         proLayoutPreferences,