diff --git a/src/app-toolkit/app-toolkit.interface.ts b/src/app-toolkit/app-toolkit.interface.ts
index 11033ea3a..f2f6484e1 100644
--- a/src/app-toolkit/app-toolkit.interface.ts
+++ b/src/app-toolkit/app-toolkit.interface.ts
@@ -6,7 +6,7 @@ import { AppDefinition } from '~app/app.definition';
 import { IContractFactory } from '~contract/contracts';
 import { EthersMulticall } from '~multicall';
 import { DefaultDataProps } from '~position/display.interface';
-import { AppTokenPosition, ContractPosition } from '~position/position.interface';
+import { AppTokenPosition, ContractPosition, NonFungibleToken } from '~position/position.interface';
 import { AppGroupsDefinition } from '~position/position.service';
 import { BaseToken } from '~position/token.interface';
 import { Network } from '~types/network.interface';
@@ -44,6 +44,13 @@ export interface IAppToolkit {
     ...appTokenDefinition: AppGroupsDefinition[]
   ): Promise<ContractPosition<T>[]>;
 
+  // Position Key
+
+  getPositionKey(
+    position: ContractPosition | AppTokenPosition | BaseToken | NonFungibleToken,
+    pickFields?: string[],
+  ): string;
+
   // Cache
 
   getFromCache<T = any>(key: string): Promise<T | undefined>;
diff --git a/src/app-toolkit/app-toolkit.service.ts b/src/app-toolkit/app-toolkit.service.ts
index 1725970f0..568bc3e1e 100644
--- a/src/app-toolkit/app-toolkit.service.ts
+++ b/src/app-toolkit/app-toolkit.service.ts
@@ -8,7 +8,10 @@ import { ContractFactory } from '~contract';
 import { MulticallService } from '~multicall/multicall.service';
 import { NetworkProviderService } from '~network-provider/network-provider.service';
 import { DefaultDataProps } from '~position/display.interface';
+import { PositionKeyService } from '~position/position-key.service';
+import { AppTokenPosition, ContractPosition, NonFungibleToken } from '~position/position.interface';
 import { AppGroupsDefinition, PositionService } from '~position/position.service';
+import { BaseToken } from '~position/token.interface';
 import { TokenService } from '~token/token.service';
 import { Network } from '~types/network.interface';
 
@@ -24,6 +27,7 @@ export class AppToolkit implements IAppToolkit {
     @Inject(AppService) private readonly appService: AppService,
     @Inject(NetworkProviderService) private readonly networkProviderService: NetworkProviderService,
     @Inject(PositionService) private readonly positionService: PositionService,
+    @Inject(PositionKeyService) private readonly positionKeyService: PositionKeyService,
     @Inject(TokenService) private readonly tokenService: TokenService,
     @Inject(MulticallService) private readonly multicallService: MulticallService,
     @Inject(CACHE_MANAGER) private readonly cacheManager: Cache,
@@ -75,6 +79,15 @@ export class AppToolkit implements IAppToolkit {
     return this.positionService.getAppContractPositions<T>(...appTokenDefinitions);
   }
 
+  // Position Key
+
+  getPositionKey(
+    position: ContractPosition | AppTokenPosition | BaseToken | NonFungibleToken,
+    pickFields: string[] = [],
+  ) {
+    return this.positionKeyService.getPositionKey(position, pickFields);
+  }
+
   // Cache
 
   async getFromCache<T = any>(key: string) {
diff --git a/src/app-toolkit/helpers/master-chef/master-chef.contract-position-helper.ts b/src/app-toolkit/helpers/master-chef/master-chef.contract-position-helper.ts
index 51c12658d..f0f20f17c 100644
--- a/src/app-toolkit/helpers/master-chef/master-chef.contract-position-helper.ts
+++ b/src/app-toolkit/helpers/master-chef/master-chef.contract-position-helper.ts
@@ -303,6 +303,7 @@ export class MasterChefContractPositionHelper {
           displayProps,
         };
 
+        position.key = this.appToolkit.getPositionKey(position, ['poolIndex']);
         return position;
       }),
     );
diff --git a/src/apps/lyra-avalon/optimism/lyra-avalon.options.contract-position-fetcher.ts b/src/apps/lyra-avalon/optimism/lyra-avalon.options.contract-position-fetcher.ts
index 37baad336..e120721b3 100644
--- a/src/apps/lyra-avalon/optimism/lyra-avalon.options.contract-position-fetcher.ts
+++ b/src/apps/lyra-avalon/optimism/lyra-avalon.options.contract-position-fetcher.ts
@@ -54,6 +54,7 @@ export class OptimismLyraAvalonOptionsContractPositionFetcher implements Positio
             },
             dataProps: {},
           };
+
           const positions = _.keys(OPTION_TYPES).map(key => {
             return {
               ...position,
@@ -73,7 +74,12 @@ export class OptimismLyraAvalonOptionsContractPositionFetcher implements Positio
               },
             } as ContractPosition<LyraAvalonOptionContractPositionDataProps>;
           });
-          return positions;
+
+          const positionsWithKey = positions.map(p => ({
+            key: this.appToolkit.getPositionKey(p, ['optionType', 'strikeId']),
+            ...p,
+          }));
+          return positionsWithKey;
         });
         return _.flatten(strikes);
       });
diff --git a/src/position/position-key.service.ts b/src/position/position-key.service.ts
new file mode 100644
index 000000000..bf520d173
--- /dev/null
+++ b/src/position/position-key.service.ts
@@ -0,0 +1,53 @@
+import { Injectable } from '@nestjs/common';
+import murmur from 'murmurhash-js';
+
+import { Network } from '~types/network.interface';
+
+import { ContractType } from './contract.interface';
+import { AppTokenPosition, ContractPosition, MetaType, NonFungibleToken } from './position.interface';
+import { BaseToken } from './token.interface';
+
+export type AppGroupsDefinition = {
+  appId: string;
+  groupIds: string[];
+  network: Network;
+};
+
+@Injectable()
+export class PositionKeyService {
+  generateKey(input: string) {
+    return murmur.murmur3(input).toString();
+  }
+
+  getPositionKey(
+    position: ContractPosition | AppTokenPosition | BaseToken | NonFungibleToken,
+    pickFields: string[] = [],
+  ) {
+    if ('key' in position) return position.key!;
+
+    switch (position.type) {
+      case ContractType.POSITION:
+        return this.generateKey(
+          [
+            position.address,
+            position.network,
+            position.appId,
+            position.tokens.map(token => [token.address, token.network, token.metaType].join(':')),
+            pickFields.map(v => position.dataProps[v]).join(':'),
+          ].join(':'),
+        );
+      case ContractType.APP_TOKEN:
+        return this.generateKey(
+          [
+            position.appId,
+            position.address,
+            position.network,
+            MetaType.SUPPLIED,
+            pickFields.map(v => position.dataProps[v]).join(':'),
+          ].join(':'),
+        );
+      default:
+        return this.generateKey([position.address, position.network, MetaType.SUPPLIED].join(':'));
+    }
+  }
+}
diff --git a/src/position/position.module.ts b/src/position/position.module.ts
index 3eda1fb5a..df413bbcc 100644
--- a/src/position/position.module.ts
+++ b/src/position/position.module.ts
@@ -5,14 +5,21 @@ import { CacheModule } from '~cache/cache.module';
 
 import { PositionBalanceFetcherRegistry } from './position-balance-fetcher.registry';
 import { PositionFetcherRegistry } from './position-fetcher.registry';
+import { PositionKeyService } from './position-key.service';
 import { PositionSources } from './position-source';
 import { PositionController } from './position.controller';
 import { PositionService } from './position.service';
 
 @Module({
   imports: [DiscoveryModule, CacheModule],
-  providers: [...PositionSources, PositionService, PositionFetcherRegistry, PositionBalanceFetcherRegistry],
+  providers: [
+    ...PositionSources,
+    PositionService,
+    PositionFetcherRegistry,
+    PositionBalanceFetcherRegistry,
+    PositionKeyService,
+  ],
   controllers: [PositionController],
-  exports: [PositionService, PositionFetcherRegistry, PositionBalanceFetcherRegistry],
+  exports: [PositionService, PositionFetcherRegistry, PositionBalanceFetcherRegistry, PositionKeyService],
 })
 export class PositionModule {}