diff --git a/crates/fidc-core/src/platform_expr_strategy.rs b/crates/fidc-core/src/platform_expr_strategy.rs
index 17b0d61..ec93cb4 100644
--- a/crates/fidc-core/src/platform_expr_strategy.rs
+++ b/crates/fidc-core/src/platform_expr_strategy.rs
@@ -7042,6 +7042,8 @@ impl PlatformExprStrategy {
             5,
         );
         let mut candidates = Vec::new();
+        let mut missing_rank_count = 0usize;
+        let mut missing_rank_examples = Vec::new();
         for candidate in universe {
             let stock = self.selection_stock_state_with_factor_date(
                 ctx,
@@ -7064,11 +7066,9 @@ impl PlatformExprStrategy {
             }
             let rank_value = self.rank_value(ctx, day, &candidate, &stock)?;
             if !rank_value.is_finite() {
-                if diagnostics.len() < 12 {
-                    diagnostics.push(format!(
-                        "{} rejected by missing rank field",
-                        candidate.symbol
-                    ));
+                missing_rank_count += 1;
+                if missing_rank_examples.len() < 5 {
+                    missing_rank_examples.push(candidate.symbol.clone());
                 }
                 continue;
             }
@@ -7114,6 +7114,13 @@ impl PlatformExprStrategy {
                 break;
             }
         }
+        if selected.len() < limit && missing_rank_count > 0 && diagnostics.len() < 12 {
+            diagnostics.push(format!(
+                "rank_field_unavailable count={} examples={}",
+                missing_rank_count,
+                missing_rank_examples.join(",")
+            ));
+        }
 
         Ok((selected, diagnostics, risk_decisions))
     }
@@ -7709,6 +7716,8 @@ impl PlatformExprStrategy {
     ) -> Result<(Vec<String>, Vec<String>, usize, Vec<String>), BacktestError> {
         let mut diagnostics = Vec::new();
         let mut candidates = Vec::new();
+        let mut missing_rank_count = 0usize;
+        let mut missing_rank_examples = Vec::new();
         let quote_usage = self.stock_filter_quote_usage();
         let selection_risk_deferral = if ctx.is_lagged_execution() {
             SelectionRiskDeferral::All
@@ -7748,11 +7757,9 @@ impl PlatformExprStrategy {
             }
             let rank_value = self.rank_value(ctx, day, &candidate, &stock)?;
             if !rank_value.is_finite() {
-                if diagnostics.len() < 12 {
-                    diagnostics.push(format!(
-                        "{} quote_plan rejected by missing rank field",
-                        candidate.symbol
-                    ));
+                missing_rank_count += 1;
+                if missing_rank_examples.len() < 5 {
+                    missing_rank_examples.push(candidate.symbol.clone());
                 }
                 continue;
             }
@@ -7812,6 +7819,17 @@ impl PlatformExprStrategy {
                 break;
             }
         }
+        if (selected_symbols.len() < selection_limit
+            || quote_candidate_symbols.len() < quote_candidate_limit)
+            && missing_rank_count > 0
+            && diagnostics.len() < 12
+        {
+            diagnostics.push(format!(
+                "quote_plan_rank_field_unavailable count={} examples={}",
+                missing_rank_count,
+                missing_rank_examples.join(",")
+            ));
+        }
         Ok((
             quote_candidate_symbols,
             selected_symbols,