diff --git a/docs/evidence/layered-execution-quote-index-rejection-20260907.json b/docs/evidence/layered-execution-quote-index-rejection-20260907.json
new file mode 100644
index 0000000..bd80b43
--- /dev/null
+++ b/docs/evidence/layered-execution-quote-index-rejection-20260907.json
@@ -0,0 +1,62 @@
+{
+  "schemaVersion": "fidc-engine-optimization-rejection/v1",
+  "generatedDate": "2026-09-07",
+  "host": "192.168.31.177",
+  "candidate": {
+    "engineCommit": "f2de8b281a7f9537665d86895f8c51fb33386d9e",
+    "implementationIdentitySha256": "1ea0d2834901504e79d76d9df722f009a2ced3c2a02ddf247eae8722be135516",
+    "description": "Store execution quote dates, symbol maps and quote vectors as nested Arc values so a lazy write clones only one path."
+  },
+  "revert": {
+    "engineCommit": "68c186f649965118da63ff0f0dc2272005538a55",
+    "implementationIdentitySha256": "4f81eb707baeb76375a03eb8989cb043089b1a7c1d07a998570861eb7dc6fa95",
+    "description": "Restore the flat read-optimized execution quote index."
+  },
+  "measurements": {
+    "currentCloseOneYear": {
+      "candidateHotMedianTotalSeconds": 1.19,
+      "candidateHotMedianEngineSeconds": 0.652,
+      "revertHotMedianTotalSeconds": 1.183,
+      "revertHotMedianEngineSeconds": 0.722,
+      "candidateEngineImprovementPercent": 9.695291
+    },
+    "nextBarOpenFiveYear": {
+      "candidateHotMedianTotalSeconds": 2.896,
+      "candidateHotMedianEngineSeconds": 2.25,
+      "revertHotMedianTotalSeconds": 2.848,
+      "revertHotMedianEngineSeconds": 2.223,
+      "candidateEngineRegressionPercent": 1.214575
+    },
+    "staticCurrentClose": {
+      "candidateHotMedianEngineSeconds": 0.324,
+      "acceptedFlatIndexHotMedianEngineSeconds": 0.322
+    },
+    "fullMinute": {
+      "candidateHotMedianEngineSeconds": 0.225,
+      "acceptedFlatIndexHotMedianEngineSeconds": 0.226
+    }
+  },
+  "correctness": {
+    "totalReturnEqual": true,
+    "tradeCountEqual": true,
+    "canonicalResultDigestEqual": true,
+    "resultStoreDigestEqual": true,
+    "terminalAuditEqual": true,
+    "candidateWorkspaceCoreTestsPassed": 442,
+    "revertWorkspaceCoreTestsPassed": 441,
+    "workspaceFailures": 0
+  },
+  "decision": {
+    "status": "rejected_and_removed",
+    "reason": "Nested Arc indirection improves the lazy-write strategy but causes a repeatable next_bar_open regression and has no static/full-minute read benefit.",
+    "replacementDirection": "Keep the flat immutable base index and isolate lazy additions in a run-local overlay without changing the base iterator representation."
+  },
+  "supportingEvidence": [
+    "/Users/boris/WorkSpace/fidc-backtest-service/docs/evidence/current-close-layered-quote-index-rejection-20260907.json",
+    "/Users/boris/WorkSpace/fidc-backtest-service/docs/evidence/static-pool-layered-quote-index-rejection-20260907.json",
+    "/Users/boris/WorkSpace/fidc-backtest-service/docs/evidence/full-minute-layered-quote-index-rejection-20260907.json",
+    "/Users/boris/WorkSpace/fidc-backtest-service/docs/evidence/next-open-layered-quote-index-rejection-20260907.json",
+    "/Users/boris/WorkSpace/fidc-backtest-service/docs/evidence/current-close-after-layered-index-revert-20260907.json",
+    "/Users/boris/WorkSpace/fidc-backtest-service/docs/evidence/next-open-after-layered-index-revert-20260907.json"
+  ]
+}