diff --git a/services/adapters/market_adapter.py b/services/adapters/market_adapter.py
index dce07bf..433bcb9 100644
--- a/services/adapters/market_adapter.py
+++ b/services/adapters/market_adapter.py
@@ -135,11 +135,11 @@ class PolygonMarketAdapter(MarketDataAdapter):
             if config.get("limit"):
                 params["limit"] = str(config["limit"])
         elif endpoint_key == "intraday_bars":
-            # Intraday: fetch hourly bars for today
+            # Intraday: fetch 15-minute bars for today
             from datetime import date as date_cls
             today = date_cls.today().isoformat()
-            multiplier = str(config.get("multiplier", 1))
-            timespan = config.get("timespan", "hour")
+            multiplier = str(config.get("multiplier", 15))
+            timespan = config.get("timespan", "minute")
             path = self.INTRADAY_BARS.format(
                 ticker=ticker,
                 multiplier=multiplier,
@@ -149,7 +149,7 @@ class PolygonMarketAdapter(MarketDataAdapter):
             )
             params["adjusted"] = str(config.get("adjusted", True)).lower()
             params["sort"] = "asc"
-            params["limit"] = str(config.get("limit", 50))
+            params["limit"] = str(config.get("limit", 100))
         elif endpoint_key == "grouped_daily":
             # Grouped daily: returns bars for ALL tickers for a given date
             target_date = config.get("date", "")