diff --git a/src/live/xsec_worker.py b/src/live/xsec_worker.py
index a8eb5e1..349026a 100644
--- a/src/live/xsec_worker.py
+++ b/src/live/xsec_worker.py
@@ -67,11 +67,13 @@ class CrossSectionalWorker:
 
     def _save(self):
         self.status_path.write_text(json.dumps({
-            "capital": round(self.capital, 2), "in_position": self.in_position,
-            "weights": {a: round(v, 5) for a, v in self.weights.items()},
-            "entry_px": self.entry_px, "bars_held": self.bars_held, "cooldown": self.cooldown,
-            "total_trades": self.total_trades, "total_wins": self.total_wins,
-            "last_bar_ts": self.last_bar_ts, "last_update": datetime.now(timezone.utc).isoformat(),
+            "capital": round(float(self.capital), 2), "in_position": bool(self.in_position),
+            "weights": {a: round(float(v), 5) for a, v in self.weights.items()},
+            "entry_px": {a: float(v) for a, v in self.entry_px.items()},
+            "bars_held": int(self.bars_held), "cooldown": int(self.cooldown),
+            "total_trades": int(self.total_trades), "total_wins": int(self.total_wins),
+            "last_bar_ts": int(self.last_bar_ts),
+            "last_update": datetime.now(timezone.utc).isoformat(),
         }, indent=2))
 
     def _log(self, event, data=None):
@@ -113,11 +115,12 @@ class CrossSectionalWorker:
         book = 0.0
         for k, a in enumerate(self.universe):
             book += self.weights[a] * np.log(closes_now[k] / self.entry_px[a])
-        net = book - 2 * self.fee_rt
-        pnl = self.capital * self.position_size * self.leverage * net
+        # cast a tipi Python: i numpy (float64/int64/bool_) rompono json.dumps in _save
+        net = float(book - 2 * self.fee_rt)
+        pnl = float(self.capital * self.position_size * self.leverage * net)
         self.capital = max(self.capital + pnl, 10.0)
         self.total_trades += 1
-        self.total_wins += net > 0
+        self.total_wins += 1 if net > 0 else 0
         acc = self.total_wins / self.total_trades * 100 if self.total_trades else 0
         self._log("CLOSE", {"book_ret": round(book * 100, 3), "net": round(net * 100, 3),
                             "pnl": round(pnl, 2), "capital": round(self.capital, 2),