diff --git a/src/opensesim/world/TradingAPI.java b/src/opensesim/world/TradingAPI.java
index 177c8e4..1870b53 100644
--- a/src/opensesim/world/TradingAPI.java
+++ b/src/opensesim/world/TradingAPI.java
@@ -49,5 +49,7 @@ public interface TradingAPI {
      * @return the AssetPair object
      */
     public AssetPair getAssetPair();
+    
+    public Set<Quote> getQuoteHistory();
 
 }