diff --git a/crates/fidc-core/src/platform_expr_strategy.rs b/crates/fidc-core/src/platform_expr_strategy.rs
index abb1267..ae754e9 100644
--- a/crates/fidc-core/src/platform_expr_strategy.rs
+++ b/crates/fidc-core/src/platform_expr_strategy.rs
@@ -6407,40 +6407,21 @@ impl Strategy for PlatformExprStrategy {
     fn on_day(&mut self, ctx: &StrategyContext<'_>) -> Result<StrategyDecision, BacktestError> {
         let execution_date = ctx.execution_date;
         let decision_date = ctx.decision_date;
-        if self.config.in_skip_window(execution_date) {
-            return Ok(StrategyDecision {
-                rebalance: false,
-                target_weights: BTreeMap::new(),
-                exit_symbols: ctx.portfolio.positions().keys().cloned().collect(),
-                order_intents: ctx
-                    .portfolio
-                    .positions()
-                    .keys()
-                    .cloned()
-                    .map(|symbol| OrderIntent::TargetValue {
-                        symbol,
-                        target_value: 0.0,
-                        reason: "seasonal_stop_window".to_string(),
-                    })
-                    .collect(),
-                notes: vec![format!("seasonal stop window on {}", execution_date)],
-                diagnostics: vec!["platform expr skip window forced all cash".to_string()],
-            });
-        }
+        let in_skip_window = self.config.in_skip_window(execution_date);
 
         let day = self.day_state(ctx, decision_date)?;
         let (selection_market_date, selection_universe_factor_date, selection_factor_date) =
             self.selection_dates(ctx);
-        let (explicit_action_intents, explicit_action_diagnostics) =
-            if self.config.explicit_action_stage == PlatformExplicitActionStage::OnDay
-                && self.explicit_actions_active(ctx.data.calendar(), execution_date)
-            {
-                self.explicit_action_intents(ctx, decision_date, &day)?
-            } else {
-                (Vec::new(), Vec::new())
-            };
+        let (explicit_action_intents, explicit_action_diagnostics) = if !in_skip_window
+            && self.config.explicit_action_stage == PlatformExplicitActionStage::OnDay
+            && self.explicit_actions_active(ctx.data.calendar(), execution_date)
+        {
+            self.explicit_action_intents(ctx, decision_date, &day)?
+        } else {
+            (Vec::new(), Vec::new())
+        };
         let mut selection_notes = Vec::new();
-        let trading_ratio = if self.config.rotation_enabled {
+        let trading_ratio = if self.config.rotation_enabled && !in_skip_window {
             self.trading_ratio(ctx, &day)?
         } else {
             0.0
@@ -6457,18 +6438,18 @@ impl Strategy for PlatformExprStrategy {
         } else {
             ctx.portfolio.total_value()
         };
-        let (band_low, band_high) = if self.config.rotation_enabled {
+        let (band_low, band_high) = if self.config.rotation_enabled && !in_skip_window {
             self.market_cap_band(ctx, &day)?
         } else {
             (0.0, 0.0)
         };
-        let selection_limit = if self.config.rotation_enabled {
+        let selection_limit = if self.config.rotation_enabled && !in_skip_window {
             self.selection_limit(ctx, &day)?
                 .min(self.config.max_positions.max(1))
         } else {
             0
         };
-        let stock_list = if self.config.rotation_enabled {
+        let stock_list = if self.config.rotation_enabled && !in_skip_window {
             let (stock_list, notes) = self.select_symbols(
                 ctx,
                 selection_market_date,
@@ -6487,7 +6468,7 @@ impl Strategy for PlatformExprStrategy {
         let empty_rebalance_retry =
             self.config.retry_empty_rebalance && ctx.portfolio.positions().is_empty();
         let effective_refresh_rate = self.effective_refresh_rate(ctx, &day)?;
-        let periodic_rebalance = if self.config.rotation_enabled {
+        let periodic_rebalance = if self.config.rotation_enabled && !in_skip_window {
             if let Some(schedule) = &self.config.rebalance_schedule {
                 schedule.matches(
                     ctx.data.calendar(),
@@ -6630,6 +6611,38 @@ impl Strategy for PlatformExprStrategy {
             }
         }
 
+        if in_skip_window {
+            for symbol in ctx.portfolio.positions().keys() {
+                if delayed_sold_symbols.contains(symbol) {
+                    continue;
+                }
+                exit_symbols.insert(symbol.clone());
+                order_intents.push(OrderIntent::TargetValue {
+                    symbol: symbol.clone(),
+                    target_value: 0.0,
+                    reason: "seasonal_stop_window".to_string(),
+                });
+            }
+            let mut notes = vec![format!("seasonal stop window on {}", execution_date)];
+            if !delayed_sold_symbols.is_empty() {
+                notes.push(format!(
+                    "delayed limit open sells before seasonal stop: {}",
+                    delayed_sold_symbols.len()
+                ));
+            }
+            return Ok(StrategyDecision {
+                rebalance: false,
+                target_weights: BTreeMap::new(),
+                exit_symbols,
+                order_intents,
+                notes,
+                diagnostics: vec![
+                    "platform expr skip window forced all cash after delayed open exits"
+                        .to_string(),
+                ],
+            });
+        }
+
         let mut aiquant_available_cash = if delayed_sold_symbols.is_empty() {
             ctx.portfolio.cash()
         } else {
@@ -8498,6 +8511,295 @@ mod tests {
         assert!(strategy.pending_highlimit_holdings.is_empty());
     }
 
+    #[test]
+    fn platform_skip_window_runs_delayed_open_exit_before_seasonal_liquidation() {
+        let prev_date = d(2024, 1, 12);
+        let date = d(2024, 1, 15);
+        let delayed_symbol = "605081.SH";
+        let other_symbol = "002001.SZ";
+        let signal_symbol = "000001.SH";
+        let data = DataSet::from_components_with_actions_and_quotes(
+            vec![
+                Instrument {
+                    symbol: delayed_symbol.to_string(),
+                    name: delayed_symbol.to_string(),
+                    board: "SH".to_string(),
+                    round_lot: 100,
+                    listed_at: Some(d(2020, 1, 1)),
+                    delisted_at: None,
+                    status: "active".to_string(),
+                },
+                Instrument {
+                    symbol: other_symbol.to_string(),
+                    name: other_symbol.to_string(),
+                    board: "SZ".to_string(),
+                    round_lot: 100,
+                    listed_at: Some(d(2020, 1, 1)),
+                    delisted_at: None,
+                    status: "active".to_string(),
+                },
+                Instrument {
+                    symbol: signal_symbol.to_string(),
+                    name: signal_symbol.to_string(),
+                    board: "SH".to_string(),
+                    round_lot: 100,
+                    listed_at: Some(d(1990, 12, 19)),
+                    delisted_at: None,
+                    status: "active".to_string(),
+                },
+            ],
+            vec![
+                DailyMarketSnapshot {
+                    date,
+                    symbol: delayed_symbol.to_string(),
+                    timestamp: Some("2024-01-15 10:18:00".to_string()),
+                    day_open: 14.63,
+                    open: 14.63,
+                    high: 14.70,
+                    low: 14.42,
+                    close: 14.50,
+                    last_price: 14.50,
+                    bid1: 14.50,
+                    ask1: 14.51,
+                    prev_close: 13.30,
+                    volume: 200_000,
+                    tick_volume: 1_000,
+                    bid1_volume: 1_000,
+                    ask1_volume: 1_000,
+                    trading_phase: Some("continuous".to_string()),
+                    paused: false,
+                    upper_limit: 14.63,
+                    lower_limit: 11.97,
+                    price_tick: 0.01,
+                },
+                DailyMarketSnapshot {
+                    date,
+                    symbol: other_symbol.to_string(),
+                    timestamp: Some("2024-01-15 10:18:00".to_string()),
+                    day_open: 8.00,
+                    open: 8.00,
+                    high: 8.10,
+                    low: 7.90,
+                    close: 8.02,
+                    last_price: 8.02,
+                    bid1: 8.01,
+                    ask1: 8.02,
+                    prev_close: 7.95,
+                    volume: 200_000,
+                    tick_volume: 1_000,
+                    bid1_volume: 1_000,
+                    ask1_volume: 1_000,
+                    trading_phase: Some("continuous".to_string()),
+                    paused: false,
+                    upper_limit: 8.75,
+                    lower_limit: 7.16,
+                    price_tick: 0.01,
+                },
+                DailyMarketSnapshot {
+                    date,
+                    symbol: signal_symbol.to_string(),
+                    timestamp: Some("2024-01-15 10:18:00".to_string()),
+                    day_open: 2900.0,
+                    open: 2900.0,
+                    high: 2910.0,
+                    low: 2890.0,
+                    close: 2905.0,
+                    last_price: 2905.0,
+                    bid1: 2905.0,
+                    ask1: 2905.1,
+                    prev_close: 2898.0,
+                    volume: 1_000_000,
+                    tick_volume: 1_000,
+                    bid1_volume: 1_000,
+                    ask1_volume: 1_000,
+                    trading_phase: Some("continuous".to_string()),
+                    paused: false,
+                    upper_limit: 0.0,
+                    lower_limit: 0.0,
+                    price_tick: 0.01,
+                },
+            ],
+            vec![
+                DailyFactorSnapshot {
+                    date,
+                    symbol: delayed_symbol.to_string(),
+                    market_cap_bn: 24.0,
+                    free_float_cap_bn: 6.0,
+                    pe_ttm: 8.0,
+                    turnover_ratio: Some(20.0),
+                    effective_turnover_ratio: Some(20.0),
+                    extra_factors: BTreeMap::new(),
+                },
+                DailyFactorSnapshot {
+                    date,
+                    symbol: other_symbol.to_string(),
+                    market_cap_bn: 23.0,
+                    free_float_cap_bn: 5.0,
+                    pe_ttm: 8.0,
+                    turnover_ratio: Some(20.0),
+                    effective_turnover_ratio: Some(20.0),
+                    extra_factors: BTreeMap::new(),
+                },
+            ],
+            vec![
+                CandidateEligibility {
+                    date,
+                    symbol: delayed_symbol.to_string(),
+                    is_st: false,
+                    is_new_listing: false,
+                    is_paused: false,
+                    allow_buy: true,
+                    allow_sell: true,
+                    is_kcb: false,
+                    is_one_yuan: false,
+                },
+                CandidateEligibility {
+                    date,
+                    symbol: other_symbol.to_string(),
+                    is_st: false,
+                    is_new_listing: false,
+                    is_paused: false,
+                    allow_buy: true,
+                    allow_sell: true,
+                    is_kcb: false,
+                    is_one_yuan: false,
+                },
+            ],
+            vec![BenchmarkSnapshot {
+                date,
+                benchmark: "932000.CSI".to_string(),
+                open: 1000.0,
+                close: 1002.0,
+                prev_close: 998.0,
+                volume: 1_000_000,
+            }],
+            Vec::new(),
+            vec![
+                IntradayExecutionQuote {
+                    date,
+                    symbol: delayed_symbol.to_string(),
+                    timestamp: date.and_hms_opt(9, 31, 0).expect("valid timestamp"),
+                    last_price: 14.62,
+                    bid1: 14.61,
+                    ask1: 14.62,
+                    bid1_volume: 1_000,
+                    ask1_volume: 1_000,
+                    volume_delta: 10_000,
+                    amount_delta: 146_200.0,
+                    trading_phase: Some("continuous".to_string()),
+                },
+                IntradayExecutionQuote {
+                    date,
+                    symbol: delayed_symbol.to_string(),
+                    timestamp: date.and_hms_opt(10, 18, 0).expect("valid timestamp"),
+                    last_price: 14.50,
+                    bid1: 14.50,
+                    ask1: 14.51,
+                    bid1_volume: 1_000,
+                    ask1_volume: 1_000,
+                    volume_delta: 10_000,
+                    amount_delta: 145_000.0,
+                    trading_phase: Some("continuous".to_string()),
+                },
+                IntradayExecutionQuote {
+                    date,
+                    symbol: other_symbol.to_string(),
+                    timestamp: date.and_hms_opt(10, 18, 0).expect("valid timestamp"),
+                    last_price: 8.02,
+                    bid1: 8.01,
+                    ask1: 8.02,
+                    bid1_volume: 1_000,
+                    ask1_volume: 1_000,
+                    volume_delta: 10_000,
+                    amount_delta: 80_200.0,
+                    trading_phase: Some("continuous".to_string()),
+                },
+            ],
+        )
+        .expect("dataset");
+        let mut portfolio = PortfolioState::new(1_000_000.0);
+        portfolio
+            .position_mut(delayed_symbol)
+            .buy(prev_date, 3_800, 13.30);
+        portfolio
+            .position_mut(other_symbol)
+            .buy(prev_date, 5_000, 7.95);
+        let subscriptions = BTreeSet::new();
+        let ctx = StrategyContext {
+            execution_date: date,
+            decision_date: date,
+            decision_index: 20,
+            data: &data,
+            portfolio: &portfolio,
+            futures_account: None,
+            open_orders: &[],
+            dynamic_universe: None,
+            subscriptions: &subscriptions,
+            process_events: &[],
+            active_process_event: None,
+            active_datetime: None,
+            order_events: &[],
+            fills: &[],
+        };
+        let mut cfg = PlatformExprStrategyConfig::microcap_rotation();
+        cfg.signal_symbol = signal_symbol.to_string();
+        cfg.benchmark_symbol = "932000.CSI".to_string();
+        cfg.aiquant_transaction_cost = true;
+        cfg.intraday_execution_time = Some(NaiveTime::from_hms_opt(10, 18, 0).unwrap());
+        cfg.delayed_limit_open_exit_enabled = true;
+        cfg.delayed_limit_open_exit_time = Some(NaiveTime::from_hms_opt(9, 31, 0).unwrap());
+        cfg.skip_month_day_ranges = vec![(Some(2024), 1, 15, 31)];
+        let mut strategy = PlatformExprStrategy::new(cfg);
+        strategy
+            .pending_highlimit_holdings
+            .insert(delayed_symbol.to_string());
+
+        let decision = strategy.on_day(&ctx).expect("platform decision");
+
+        assert!(
+            decision.order_intents.iter().any(|intent| matches!(
+                intent,
+                OrderIntent::AlgoValue {
+                    symbol,
+                    reason,
+                    start_time,
+                    ..
+                } if symbol == delayed_symbol
+                    && reason == "delayed_limit_open_sell"
+                    && *start_time == Some(NaiveTime::from_hms_opt(9, 31, 0).unwrap())
+            )),
+            "{:?}",
+            decision.order_intents
+        );
+        assert!(
+            decision.order_intents.iter().any(|intent| matches!(
+                intent,
+                OrderIntent::TargetValue {
+                    symbol,
+                    target_value,
+                    reason,
+                } if symbol == other_symbol
+                    && *target_value == 0.0
+                    && reason == "seasonal_stop_window"
+            )),
+            "{:?}",
+            decision.order_intents
+        );
+        assert!(
+            !decision.order_intents.iter().any(|intent| matches!(
+                intent,
+                OrderIntent::TargetValue {
+                    symbol,
+                    reason,
+                    ..
+                } if symbol == delayed_symbol && reason == "seasonal_stop_window"
+            )),
+            "{:?}",
+            decision.order_intents
+        );
+        assert!(!strategy.pending_highlimit_holdings.contains(delayed_symbol));
+    }
+
     #[test]
     fn platform_aiquant_marks_highlimit_before_cptrade_time() {
         let prev_date = d(2024, 3, 1);
@@ -8947,7 +9249,9 @@ mod tests {
         .expect("dataset");
         let mut portfolio = PortfolioState::new(1_000_000.0);
         portfolio.position_mut(symbol).buy(prev_date, 100, 10.0);
-        portfolio.position_mut(symbol).record_buy_trade_cost(100, 1.0);
+        portfolio
+            .position_mut(symbol)
+            .record_buy_trade_cost(100, 1.0);
         let position = portfolio.position(symbol).expect("position");
         assert!((position.average_entry_price().unwrap() - 10.0).abs() < 1e-12);
         assert!((position.average_cost - 10.01).abs() < 1e-12);