diff --git a/asset/README.md b/asset/README.md
index 932ee06..0c18aab 100644
--- a/asset/README.md
+++ b/asset/README.md
@@ -31,7 +31,7 @@ The information provided on this project is strictly for informational purposes
 - [func SnapshotsAsHighs\(snapshots \<\-chan \*Snapshot\) \<\-chan float64](<#SnapshotsAsHighs>)
 - [func SnapshotsAsLows\(snapshots \<\-chan \*Snapshot\) \<\-chan float64](<#SnapshotsAsLows>)
 - [func SnapshotsAsOpenings\(snapshots \<\-chan \*Snapshot\) \<\-chan float64](<#SnapshotsAsOpenings>)
-- [func SnapshotsAsVolumes\(snapshots \<\-chan \*Snapshot\) \<\-chan int64](<#SnapshotsAsVolumes>)
+- [func SnapshotsAsVolumes\(snapshots \<\-chan \*Snapshot\) \<\-chan float64](<#SnapshotsAsVolumes>)
 - [type FileSystemRepository](<#FileSystemRepository>)
   - [func NewFileSystemRepository\(base string\) \*FileSystemRepository](<#NewFileSystemRepository>)
   - [func \(r \*FileSystemRepository\) Append\(name string, snapshots \<\-chan \*Snapshot\) error](<#FileSystemRepository.Append>)
@@ -140,7 +140,7 @@ SnapshotsAsOpenings extracts the open field from each snapshot in the provided c
 ## func [SnapshotsAsVolumes](<https://github.com/cinar/indicator/blob/master/asset/snapshot.go#L88>)
 
 ```go
-func SnapshotsAsVolumes(snapshots <-chan *Snapshot) <-chan int64
+func SnapshotsAsVolumes(snapshots <-chan *Snapshot) <-chan float64
 ```
 
 SnapshotsAsVolumes extracts the volume field from each snapshot in the provided channel and returns a new channel containing only those volume values.The original snapshots channel can no longer be directly used afterwards.
@@ -331,7 +331,7 @@ type Snapshot struct {
 
     // Volume represents the total trading activity for
     // the asset during the snapshot period.
-    Volume int64
+    Volume float64
 }
 ```
 
diff --git a/asset/snapshot.go b/asset/snapshot.go
index cc5860a..64cdcc4 100644
--- a/asset/snapshot.go
+++ b/asset/snapshot.go
@@ -34,7 +34,7 @@ type Snapshot struct {
 
 	// Volume represents the total trading activity for
 	// the asset during the snapshot period.
-	Volume int64
+	Volume float64
 }
 
 // SnapshotsAsDates extracts the date field from each snapshot in the provided
@@ -85,8 +85,8 @@ func SnapshotsAsClosings(snapshots <-chan *Snapshot) <-chan float64 {
 // SnapshotsAsVolumes extracts the volume field from each snapshot in the provided
 // channel and returns a new channel containing only those volume values.The
 // original snapshots channel can no longer be directly used afterwards.
-func SnapshotsAsVolumes(snapshots <-chan *Snapshot) <-chan int64 {
-	return helper.Map(snapshots, func(snapshot *Snapshot) int64 {
+func SnapshotsAsVolumes(snapshots <-chan *Snapshot) <-chan float64 {
+	return helper.Map(snapshots, func(snapshot *Snapshot) float64 {
 		return snapshot.Volume
 	})
 }
diff --git a/asset/tiingo_repository.go b/asset/tiingo_repository.go
index fb73b80..a8a9a75 100644
--- a/asset/tiingo_repository.go
+++ b/asset/tiingo_repository.go
@@ -87,7 +87,7 @@ func (e *TiingoEndOfDay) ToSnapshot() *Snapshot {
 		High:   e.AdjHigh,
 		Low:    e.AdjLow,
 		Close:  e.AdjClose,
-		Volume: e.AdjVolume,
+		Volume: float64(e.AdjVolume),
 	}
 }