diff --git a/crates/fidc-core/src/platform_strategy_spec.rs b/crates/fidc-core/src/platform_strategy_spec.rs
index a255472..830091d 100644
--- a/crates/fidc-core/src/platform_strategy_spec.rs
+++ b/crates/fidc-core/src/platform_strategy_spec.rs
@@ -1793,6 +1793,12 @@ pub fn platform_expr_config_from_spec(
         {
             cfg.retry_empty_rebalance = true;
         }
+        if trading
+            .and_then(|item| item.release_slot_on_exit_signal)
+            .is_none()
+        {
+            cfg.release_slot_on_exit_signal = true;
+        }
     }
     let trade_times = spec_trade_times(spec);
     if let Some(main_trade_time) = trade_times.last().copied() {
@@ -3087,6 +3093,51 @@ mod tests {
         );
     }
 
+    #[test]
+    fn aiquant_compatibility_defaults_release_slot_on_exit_signal() {
+        let spec = serde_json::json!({
+            "engineConfig": {
+                "profileName": "cn_a_microcap_v1",
+                "compatibilityProfile": "aiquant_rqalpha"
+            },
+            "runtimeExpressions": {
+                "trading": {
+                    "dailyTopUp": true
+                }
+            }
+        });
+
+        let cfg = platform_expr_config_from_value("", "", &spec).expect("config");
+
+        assert!(
+            cfg.release_slot_on_exit_signal,
+            "AiQuant compatibility must release the strategy working slot when an exit signal is emitted"
+        );
+    }
+
+    #[test]
+    fn aiquant_compatibility_respects_explicit_release_slot_false() {
+        let spec = serde_json::json!({
+            "engineConfig": {
+                "profileName": "cn_a_microcap_v1",
+                "compatibilityProfile": "aiquant_rqalpha"
+            },
+            "runtimeExpressions": {
+                "trading": {
+                    "dailyTopUp": true,
+                    "releaseSlotOnExitSignal": false
+                }
+            }
+        });
+
+        let cfg = platform_expr_config_from_value("", "", &spec).expect("config");
+
+        assert!(
+            !cfg.release_slot_on_exit_signal,
+            "explicit FIDC semantics must override the AiQuant compatibility default"
+        );
+    }
+
     #[test]
     fn parses_explicit_delayed_limit_open_exit() {
         let spec = serde_json::json!({