diff --git a/tradingagents/dataflows/stockstats_utils.py b/tradingagents/dataflows/stockstats_utils.py
index 018e77b..379d212 100644
--- a/tradingagents/dataflows/stockstats_utils.py
+++ b/tradingagents/dataflows/stockstats_utils.py
@@ -296,6 +296,10 @@ def load_ohlcv(symbol: str, curr_date: str) -> pd.DataFrame:
     if os.path.exists(data_file):
         cached = pd.read_csv(data_file, on_bad_lines="skip", encoding="utf-8")
         if not cached.empty and "Close" in cached.columns:
+            # Ensure Date column is datetime after loading from cache
+            if "Date" in cached.columns:
+                cached["Date"] = pd.to_datetime(cached["Date"], errors="coerce")
+                cached = cached.dropna(subset=["Date"])
             data = cached
 
     if data is None: