diff --git a/apps/api/src/app/order/create-order.dto.ts b/apps/api/src/app/order/create-order.dto.ts
index aecec842a..0023eab41 100644
--- a/apps/api/src/app/order/create-order.dto.ts
+++ b/apps/api/src/app/order/create-order.dto.ts
@@ -15,10 +15,33 @@ import {
   IsNumber,
   IsOptional,
   IsString,
-  Min
+  Min,
+  ValidationArguments,
+  ValidationOptions,
+  registerDecorator
 } from 'class-validator';
 import { isString } from 'lodash';
 
+function IsQuantityValid(validationOptions?: ValidationOptions) {
+  return function (object: Object, propertyName: string) {
+    registerDecorator({
+      name: 'isQuantityValid',
+      target: object.constructor,
+      propertyName: propertyName,
+      options: validationOptions,
+      validator: {
+        validate(value: any, args: ValidationArguments) {
+          const order = args.object as CreateOrderDto;
+          return order.type !== 'SPLIT' ? value >= 0 : true;
+        },
+        defaultMessage(args: ValidationArguments) {
+          return `Quantity must not be less than 0 unless the type is ${Type.SPLIT}`;
+        }
+      }
+    });
+  };
+}
+
 export class CreateOrderDto {
   @IsOptional()
   @IsString()
@@ -54,7 +77,7 @@ export class CreateOrderDto {
   fee: number;
 
   @IsNumber()
-  @Min(0)
+  @IsQuantityValid()
   quantity: number;
 
   @IsString()
diff --git a/apps/api/src/app/portfolio/calculator/twr/portfolio-calculator.ts b/apps/api/src/app/portfolio/calculator/twr/portfolio-calculator.ts
index 6ea93a670..441779289 100644
--- a/apps/api/src/app/portfolio/calculator/twr/portfolio-calculator.ts
+++ b/apps/api/src/app/portfolio/calculator/twr/portfolio-calculator.ts
@@ -792,9 +792,12 @@ export class PortfolioCalculator {
       if (oldAccumulatedSymbol) {
         let investment = oldAccumulatedSymbol.investment;
 
-        const newQuantity = quantity
-          .mul(factor)
-          .plus(oldAccumulatedSymbol.quantity);
+        const newQuantity =
+          type === 'SPLIT'
+            ? quantity.s === 1
+              ? oldAccumulatedSymbol.quantity.mul(quantity)
+              : oldAccumulatedSymbol.quantity.div(quantity.abs())
+            : quantity.mul(factor).plus(oldAccumulatedSymbol.quantity);
 
         if (type === 'BUY') {
           investment = oldAccumulatedSymbol.investment.plus(
diff --git a/apps/api/src/app/portfolio/portfolio.service.ts b/apps/api/src/app/portfolio/portfolio.service.ts
index 8384427c3..7a15d898c 100644
--- a/apps/api/src/app/portfolio/portfolio.service.ts
+++ b/apps/api/src/app/portfolio/portfolio.service.ts
@@ -724,7 +724,9 @@ export class PortfolioService {
       activities: orders.filter((order) => {
         tags = tags.concat(order.tags);
 
-        return ['BUY', 'DIVIDEND', 'ITEM', 'SELL'].includes(order.type);
+        return ['BUY', 'DIVIDEND', 'ITEM', 'SELL', 'SPLIT'].includes(
+          order.type
+        );
       }),
       currency: userCurrency,
       currentRateService: this.currentRateService,
diff --git a/apps/api/src/helper/portfolio.helper.ts b/apps/api/src/helper/portfolio.helper.ts
index 730f34bde..d3d3856af 100644
--- a/apps/api/src/helper/portfolio.helper.ts
+++ b/apps/api/src/helper/portfolio.helper.ts
@@ -19,6 +19,7 @@ export function getFactor(activityType: ActivityType) {
   switch (activityType) {
     case 'BUY':
     case 'ITEM':
+    case 'SPLIT':
       factor = 1;
       break;
     case 'LIABILITY':
diff --git a/apps/client/src/app/pages/portfolio/activities/create-or-update-activity-dialog/create-or-update-activity-dialog.component.ts b/apps/client/src/app/pages/portfolio/activities/create-or-update-activity-dialog/create-or-update-activity-dialog.component.ts
index b628aba46..4cc405505 100644
--- a/apps/client/src/app/pages/portfolio/activities/create-or-update-activity-dialog/create-or-update-activity-dialog.component.ts
+++ b/apps/client/src/app/pages/portfolio/activities/create-or-update-activity-dialog/create-or-update-activity-dialog.component.ts
@@ -279,7 +279,7 @@ export class CreateOrUpdateActivityDialog implements OnDestroy {
       if (this.activityForm.controls['searchSymbol'].invalid) {
         this.data.activity.SymbolProfile = null;
       } else if (
-        ['BUY', 'DIVIDEND', 'SELL'].includes(
+        ['BUY', 'DIVIDEND', 'SELL', 'SPLIT'].includes(
           this.activityForm.controls['type'].value
         )
       ) {
@@ -394,6 +394,50 @@ export class CreateOrUpdateActivityDialog implements OnDestroy {
             this.activityForm.controls['updateAccountBalance'].disable();
             this.activityForm.controls['updateAccountBalance'].setValue(false);
           }
+        } else if (type === 'SPLIT') {
+          this.activityForm.controls['currency'].removeValidators(
+            Validators.required
+          );
+          this.activityForm.controls['currency'].updateValueAndValidity();
+
+          this.activityForm.controls['currencyOfFee'].removeValidators(
+            Validators.required
+          );
+          this.activityForm.controls['currencyOfFee'].updateValueAndValidity();
+
+          this.activityForm.controls['currencyOfUnitPrice'].removeValidators(
+            Validators.required
+          );
+          this.activityForm.controls[
+            'currencyOfUnitPrice'
+          ].updateValueAndValidity();
+
+          this.activityForm.controls['fee'].removeValidators(
+            Validators.required
+          );
+          this.activityForm.controls['fee'].updateValueAndValidity();
+
+          this.activityForm.controls['feeInCustomCurrency'].removeValidators(
+            Validators.required
+          );
+          this.activityForm.controls[
+            'feeInCustomCurrency'
+          ].updateValueAndValidity();
+
+          this.activityForm.controls['unitPrice'].removeValidators(
+            Validators.required
+          );
+          this.activityForm.controls['unitPrice'].updateValueAndValidity();
+
+          this.activityForm.controls[
+            'unitPriceInCustomCurrency'
+          ].removeValidators(Validators.required);
+          this.activityForm.controls[
+            'unitPriceInCustomCurrency'
+          ].updateValueAndValidity();
+
+          this.activityForm.controls['updateAccountBalance'].disable();
+          this.activityForm.controls['updateAccountBalance'].setValue(false);
         } else {
           this.activityForm.controls['accountId'].setValidators(
             Validators.required
diff --git a/apps/client/src/app/pages/portfolio/activities/create-or-update-activity-dialog/create-or-update-activity-dialog.html b/apps/client/src/app/pages/portfolio/activities/create-or-update-activity-dialog/create-or-update-activity-dialog.html
index 81c41a316..87ffc2e18 100644
--- a/apps/client/src/app/pages/portfolio/activities/create-or-update-activity-dialog/create-or-update-activity-dialog.html
+++ b/apps/client/src/app/pages/portfolio/activities/create-or-update-activity-dialog/create-or-update-activity-dialog.html
@@ -70,6 +70,14 @@
               >Luxury items, real estate, private companies</small
             >
           </mat-option>
+          <mat-option value="SPLIT">
+            <span
+              ><b>{{ typesTranslationMap['SPLIT'] }}</b></span
+            >
+            <small class="d-block line-height-1 text-muted text-nowrap" i18n
+              >Forward split, reverse split</small
+            >
+          </mat-option>
         </mat-select>
       </mat-form-field>
     </div>
@@ -180,13 +188,22 @@
       }"
     >
       <mat-form-field appearance="outline" class="w-100">
-        <mat-label i18n>Quantity</mat-label>
+        <mat-label
+          ><ng-container [ngSwitch]="activityForm.controls['type']?.value">
+            <ng-container *ngSwitchCase="'SPLIT'" i18n>Ratio</ng-container>
+            <ng-container *ngSwitchDefault i18n>Quantity</ng-container>
+          </ng-container>
+        </mat-label>
         <input formControlName="quantity" matInput type="number" />
       </mat-form-field>
     </div>
     <div
       class="mb-3"
-      [ngClass]="{ 'd-none': activityForm.controls['type']?.value === 'FEE' }"
+      [ngClass]="{
+        'd-none':
+          activityForm.controls['type']?.value === 'FEE' ||
+          activityForm.controls['type']?.value === 'SPLIT'
+      }"
     >
       <div class="align-items-start d-flex">
         <mat-form-field appearance="outline" class="w-100">
@@ -279,7 +296,8 @@
         'd-none':
           activityForm.controls['type']?.value === 'INTEREST' ||
           activityForm.controls['type']?.value === 'ITEM' ||
-          activityForm.controls['type']?.value === 'LIABILITY'
+          activityForm.controls['type']?.value === 'LIABILITY' ||
+          activityForm.controls['type']?.value === 'SPLIT'
       }"
     >
       <mat-form-field appearance="outline" class="w-100">
diff --git a/libs/ui/src/lib/activity-type/activity-type.component.html b/libs/ui/src/lib/activity-type/activity-type.component.html
index 78eb2f17b..5c2abad2b 100644
--- a/libs/ui/src/lib/activity-type/activity-type.component.html
+++ b/libs/ui/src/lib/activity-type/activity-type.component.html
@@ -7,7 +7,8 @@
     interest: activityType === 'INTEREST',
     item: activityType === 'ITEM',
     liability: activityType === 'LIABILITY',
-    sell: activityType === 'SELL'
+    sell: activityType === 'SELL',
+    split: activityType === 'SPLIT'
   }"
 >
   @if (activityType === 'BUY') {
@@ -22,6 +23,8 @@
     <ion-icon name="flame-outline" />
   } @else if (activityType === 'SELL') {
     <ion-icon name="arrow-down-circle-outline" />
+  } @else if (activityType === 'SPLIT') {
+    <ion-icon name="git-branch-outline" />
   }
   <span class="d-none d-lg-block mx-1">{{ activityTypeLabel }}</span>
 </div>
diff --git a/libs/ui/src/lib/i18n.ts b/libs/ui/src/lib/i18n.ts
index 9687f461c..c5af1b6e0 100644
--- a/libs/ui/src/lib/i18n.ts
+++ b/libs/ui/src/lib/i18n.ts
@@ -34,6 +34,7 @@ const locales = {
   ITEM: $localize`Valuable`,
   LIABILITY: $localize`Liability`,
   SELL: $localize`Sell`,
+  SPLIT: $localize`Stock Split`,
 
   // AssetClass (enum)
   CASH: $localize`Cash`,
diff --git a/prisma/migrations/20240329190053_added_split_to_order_type/migration.sql b/prisma/migrations/20240329190053_added_split_to_order_type/migration.sql
new file mode 100644
index 000000000..618c241b8
--- /dev/null
+++ b/prisma/migrations/20240329190053_added_split_to_order_type/migration.sql
@@ -0,0 +1,2 @@
+-- AlterEnum
+ALTER TYPE "Type" ADD VALUE 'SPLIT';
diff --git a/prisma/schema.prisma b/prisma/schema.prisma
index 0b40109e8..3c35e2110 100644
--- a/prisma/schema.prisma
+++ b/prisma/schema.prisma
@@ -301,6 +301,7 @@ enum Type {
   ITEM
   LIABILITY
   SELL
+  SPLIT
 }
 
 enum ViewMode {