diff --git a/crates/ml-alpha/src/trainer/integrated.rs b/crates/ml-alpha/src/trainer/integrated.rs
index f60314d59..bfb6c15e2 100644
--- a/crates/ml-alpha/src/trainer/integrated.rs
+++ b/crates/ml-alpha/src/trainer/integrated.rs
@@ -4166,9 +4166,11 @@ impl IntegratedTrainer {
                 .launch()
                 .context("prefill graph launch")?;
         } else {
+            let capturing_prefill = self.graph_warmup_done;
             if !self.graph_warmup_done {
                 self.graph_warmup_done = true;
-            } else {
+            }
+            if capturing_prefill {
                 self.stream
                     .begin_capture(CUstreamCaptureMode::CU_STREAM_CAPTURE_MODE_RELAXED)
                     .map_err(|e| anyhow::anyhow!("prefill begin_capture: {e}"))?;
@@ -4494,9 +4496,7 @@ impl IntegratedTrainer {
             }
         }
 
-            // End of prefill kernel sequence. If we were capturing,
-            // finalize the graph.
-            if self.prefill_graph.is_none() && self.graph_warmup_done {
+            if capturing_prefill {
                 let graph = self
                     .stream
                     .end_capture(
@@ -4535,6 +4535,24 @@ impl IntegratedTrainer {
         let pos_bytes_i = lobsim.pos_bytes() as i32;
         let b_size_i = b_size as i32;
 
+        // ── Graph A2: post-snapshot / pre-fill kernel pipeline ─────────
+        // 7 kernels from session_risk through actions_to_market_targets.
+        // Same three-state machine as prefill — captures after warmup,
+        // replays on third+ step. Shares the warmup counter with Graph A.
+        if self.postfill_graph.is_some() {
+            self.postfill_graph
+                .as_ref()
+                .unwrap()
+                .launch()
+                .context("postfill graph launch")?;
+        } else {
+            let capturing_postfill = self.prefill_graph.is_some();
+            if capturing_postfill {
+                self.stream
+                    .begin_capture(CUstreamCaptureMode::CU_STREAM_CAPTURE_MODE_RELAXED)
+                    .map_err(|e| anyhow::anyhow!("postfill begin_capture: {e}"))?;
+            }
+
         // Session risk circuit breaker — block opening actions when
         // cumulative PnL EMA drops below threshold.
         {
@@ -4728,6 +4746,18 @@ impl IntegratedTrainer {
             }
         }
 
+            if capturing_postfill {
+                let graph = self
+                    .stream
+                    .end_capture(
+                        CUgraphInstantiate_flags::CUDA_GRAPH_INSTANTIATE_FLAG_AUTO_FREE_ON_LAUNCH,
+                    )
+                    .context("postfill end_capture")?
+                    .ok_or_else(|| anyhow::anyhow!("postfill end_capture returned None"))?;
+                self.postfill_graph = Some(graph);
+            }
+        } // end else (postfill warmup / capture dispatch)
+
         // Run the fill + pnl_track on whatever's now in
         // market_targets_d.
         lobsim