From 5929fedf91c31d11aeb27479adf347d9f71e0a6e Mon Sep 17 00:00:00 2001
From: Boris <boris@aiquantmind.com>
Date: Wed, 26 Aug 2026 06:39:13 +0800
Subject: [PATCH] =?UTF-8?q?=E8=B7=B3=E8=BF=87=E9=9B=B6=E7=AE=A1=E7=90=86?=
 =?UTF-8?q?=E8=B4=B9=E6=97=A0=E6=95=88=E9=9B=86=E5=90=88=E5=A4=8D=E5=88=B6?=
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---
 crates/fidc-core/src/engine.rs | 35 ++++++++++++++++++++--------------
 1 file changed, 21 insertions(+), 14 deletions(-)

diff --git a/crates/fidc-core/src/engine.rs b/crates/fidc-core/src/engine.rs
index 189275a..a1a6ab5 100644
--- a/crates/fidc-core/src/engine.rs
+++ b/crates/fidc-core/src/engine.rs
@@ -2952,20 +2952,27 @@ where
             merge_broker_report(&mut directive_report, futures_daily_settlement_report);
             let futures_expiration_report = self.settle_futures_expirations(execution_date);
             merge_broker_report(&mut directive_report, futures_expiration_report);
-            let dynamic_universe_snapshot = self.dynamic_universe.clone();
-            let subscriptions_snapshot = self.subscriptions.clone();
-            let management_fee_report = self.apply_management_fee(
-                execution_date,
-                decision_date,
-                decision_index,
-                &mut portfolio,
-                &post_close_open_orders,
-                dynamic_universe_snapshot.as_ref(),
-                &subscriptions_snapshot,
-                &mut process_events,
-                result.order_events.as_slice(),
-                result.fills.as_slice(),
-            )?;
+            let management_fee_report = if portfolio.management_fee_rate() <= 0.0 {
+                BrokerExecutionReport::default()
+            } else {
+                // The strategy context needs an immutable view while the
+                // engine mutably invokes the strategy. Avoid cloning these
+                // potentially large sets unless management fees are enabled.
+                let dynamic_universe_snapshot = self.dynamic_universe.clone();
+                let subscriptions_snapshot = self.subscriptions.clone();
+                self.apply_management_fee(
+                    execution_date,
+                    decision_date,
+                    decision_index,
+                    &mut portfolio,
+                    &post_close_open_orders,
+                    dynamic_universe_snapshot.as_ref(),
+                    &subscriptions_snapshot,
+                    &mut process_events,
+                    result.order_events.as_slice(),
+                    result.fills.as_slice(),
+                )?
+            };
             merge_broker_report(&mut directive_report, management_fee_report);
             publish_phase_event(
                 &mut self.strategy,