diff --git a/crates/fidc-core/src/strategy.rs b/crates/fidc-core/src/strategy.rs
index 1af2fb6..f302f2b 100644
--- a/crates/fidc-core/src/strategy.rs
+++ b/crates/fidc-core/src/strategy.rs
@@ -1570,13 +1570,13 @@ impl OmniMicroCapConfig {
             strategy_name: "aiquant-v1.0.4".to_string(),
             refresh_rate: 120,
             stocknum: 5,
-            xs: 3.0 / 500.0,
+            xs: 4.0 / 500.0,
             base_index_level: 2000.0,
             base_cap_floor: 7.0,
-            cap_span: 25.0,
-            padding_ratio: 0.5,
-            min_padding: 12.5,
-            max_padding: 30.0,
+            cap_span: 10.0,
+            padding_ratio: 1.2,
+            min_padding: 29.5,
+            max_padding: 50.0,
             benchmark_signal_symbol: "000852.SH".to_string(),
             benchmark_short_ma_days: 5,
             benchmark_long_ma_days: 20,
@@ -2141,7 +2141,8 @@ impl OmniMicroCapStrategy {
         &self,
         ctx: &StrategyContext<'_>,
         date: NaiveDate,
-    ) -> Result<(f64, f64, f64, f64), BacktestError> {
+    ) -> Result<(f64, f64, f64, f64, f64), BacktestError> {
+        // 当前交易日的指数价格（用于MA计算和仓位控制）
         let current_level = ctx
             .data
             .market_decision_close(date, &self.config.benchmark_signal_symbol)
@@ -2150,6 +2151,16 @@ impl OmniMicroCapStrategy {
                 symbol: self.config.benchmark_signal_symbol.clone(),
                 field: "decision_close",
             })?;
+        
+        // 前一交易日的指数价格（用于市值区间计算，模拟实盘场景）
+        let prev_level = if let Some(prev_date) = ctx.data.previous_trading_date(date, 1) {
+            ctx.data
+                .market_decision_close(prev_date, &self.config.benchmark_signal_symbol)
+                .unwrap_or(current_level)
+        } else {
+            current_level
+        };
+        
         let ma_short = ctx
             .data
             .market_decision_close_moving_average(
@@ -2181,7 +2192,7 @@ impl OmniMicroCapStrategy {
         } else {
             1.0
         };
-        Ok((current_level, ma_short, ma_long, trading_ratio))
+        Ok((current_level, prev_level, ma_short, ma_long, trading_ratio))
     }
 
     fn market_cap_band(&self, index_level: f64) -> (f64, f64) {
@@ -2233,14 +2244,25 @@ impl OmniMicroCapStrategy {
         // MA filter: ma_short > ma_mid * rsi_rate && ma_mid * rsi_rate > ma_long
         let ma_pass = ma_short > ma_mid * self.config.rsi_rate && ma_mid * self.config.rsi_rate > ma_long;
         
-        // Debug logging for first few stocks
-        static DEBUG_COUNT: std::sync::atomic::AtomicUsize = std::sync::atomic::AtomicUsize::new(0);
-        let count = DEBUG_COUNT.fetch_add(1, std::sync::atomic::Ordering::Relaxed);
-        if count < 10 {
-            eprintln!("[DEBUG MA] {} date={} ma5={:.4} ma10={:.4} ma30={:.4} rsi_rate={:.6} pass={} (ma5 > ma10*rsi={:.4}? {} && ma10*rsi > ma30={:.4}? {})",
-                symbol, date, ma_short, ma_mid, ma_long, self.config.rsi_rate, ma_pass,
-                ma_mid * self.config.rsi_rate, ma_short > ma_mid * self.config.rsi_rate,
-                ma_long, ma_mid * self.config.rsi_rate > ma_long);
+        // Debug logging for ALL stocks on first decision date
+        static DEBUG_DATE: std::sync::Mutex<Option<NaiveDate>> = std::sync::Mutex::new(None);
+        let mut debug_date = DEBUG_DATE.lock().unwrap();
+        let should_debug = if let Some(d) = *debug_date {
+            d == date
+        } else {
+            *debug_date = Some(date);
+            true
+        };
+        
+        if should_debug {
+            eprintln!("[MA_FILTER] {} cap={:.2} ma5={:.4} ma10={:.4} ma30={:.4} ma10*rsi={:.4} pass={} ({}>{:.4}? {} && {:.4}>{}? {})",
+                symbol, 
+                ctx.data.market_decision_close(date, symbol).unwrap_or(0.0),
+                ma_short, ma_mid, ma_long, 
+                ma_mid * self.config.rsi_rate,
+                ma_pass,
+                ma_short, ma_mid * self.config.rsi_rate, ma_short > ma_mid * self.config.rsi_rate,
+                ma_mid * self.config.rsi_rate, ma_long, ma_mid * self.config.rsi_rate > ma_long);
         }
         
         if !ma_pass {
@@ -2640,7 +2662,7 @@ impl Strategy for OmniMicroCapStrategy {
             });
         }
 
-        let (index_level, ma_short, ma_long, trading_ratio) = match self.trading_ratio(ctx, date) {
+        let (index_level, prev_index_level, ma_short, ma_long, trading_ratio) = match self.trading_ratio(ctx, date) {
             Ok(value) => value,
             Err(BacktestError::Execution(message))
                 if message.contains("insufficient benchmark") =>
@@ -2658,7 +2680,10 @@ impl Strategy for OmniMicroCapStrategy {
             }
             Err(err) => return Err(err),
         };
-        let (band_low, band_high) = self.market_cap_band(index_level);
+        // 使用前一交易日的指数价格计算市值区间（模拟实盘场景）
+        let (band_low, band_high) = self.market_cap_band(prev_index_level);
+        eprintln!("[DEBUG] date={} current_index={:.2} prev_index={:.2} band=[{:.0}, {:.0}]", 
+            date, index_level, prev_index_level, band_low, band_high);
         let (stock_list, selection_notes) = self.select_symbols(ctx, date, band_low, band_high)?;
         let periodic_rebalance = ctx.decision_index % self.config.refresh_rate == 0;
         let mut projected = ctx.portfolio.clone();