diff --git a/common/src/contract-params.ts b/common/src/contract-params.ts
index 13d22f24fc..63860a37dd 100644
--- a/common/src/contract-params.ts
+++ b/common/src/contract-params.ts
@@ -76,7 +76,7 @@ export async function getContractParams(
           contractId: contract.id,
           filterRedemptions: !includeRedemptions,
           includeZeroShareRedemptions: includeRedemptions,
-          beforeTime: contract.lastBetTime ?? contract.createdTime,
+          beforeTime: (contract.lastBetTime ?? contract.createdTime) + 1,
           afterTime: contract.createdTime,
         })
       : [],
diff --git a/web/components/charts/contract/zoom-utils.ts b/web/components/charts/contract/zoom-utils.ts
index a7645c82f3..4f4ba6f169 100644
--- a/web/components/charts/contract/zoom-utils.ts
+++ b/web/components/charts/contract/zoom-utils.ts
@@ -70,7 +70,7 @@ export const useDataZoomFetcher = <T>(props: {
       const min = viewXScale.invert(minX - 20).valueOf()
       const max = viewXScale.invert(maxX + 20).valueOf()
       const fixedMin = Math.max(min, createdTime)
-      const fixedMax = Math.min(max, lastBetTime)
+      const fixedMax = Math.min(max, lastBetTime) + 1
 
       onZoomData(fixedMin, fixedMax)
     } else {
@@ -173,7 +173,7 @@ export const useMultiChoiceDataZoomFetcher = <T>(props: {
       const min = viewXScale.invert(minX - 20).valueOf()
       const max = viewXScale.invert(maxX + 20).valueOf()
       const fixedMin = Math.max(min, createdTime)
-      const fixedMax = Math.min(max, lastBetTime)
+      const fixedMax = Math.min(max, lastBetTime) + 1
 
       onZoomData(fixedMin, fixedMax)
     } else {