diff --git a/src/live/cerbero_client.py b/src/live/cerbero_client.py
index 75a2d13..4cdd2e8 100644
--- a/src/live/cerbero_client.py
+++ b/src/live/cerbero_client.py
@@ -54,8 +54,8 @@ class CerberoClient:
     def get_account_summary(self) -> dict:
         return self._post("/mcp-deribit/tools/get_account_summary")
 
-    def get_positions(self) -> list[dict]:
-        return self._post("/mcp-deribit/tools/get_positions")
+    def get_positions(self, currency: str = "ETH") -> list[dict]:
+        return self._post("/mcp-deribit/tools/get_positions", {"currency": currency})
 
     # --- Trading ---