diff --git a/deploy/k8s/base/unrip.yaml b/deploy/k8s/base/unrip.yaml
index 57a4221..34d45a0 100644
--- a/deploy/k8s/base/unrip.yaml
+++ b/deploy/k8s/base/unrip.yaml
@@ -75,6 +75,7 @@ data:
   KAFKA_CONSUMER_GROUP_EXECUTOR: trade-executor-v1
   KAFKA_CONSUMER_GROUP_OPS_SENTINEL: ops-sentinel-v1
   KAFKA_CONSUMER_GROUP_OPERATOR_DASHBOARD: operator-dashboard-v1
+  HISTORY_WRITER_DERIVED_REFRESH_MAX_EVENT_AGE_MS: "300000"
   STRATEGY_STATE_DIR: /var/lib/unrip/strategy-state
   EXECUTOR_STATE_DIR: /var/lib/unrip/executor-state
   LIQUIDITY_STATE_DIR: /var/lib/unrip/liquidity-state
diff --git a/src/apps/history-writer.mjs b/src/apps/history-writer.mjs
index f700a67..a760f5e 100644
--- a/src/apps/history-writer.mjs
+++ b/src/apps/history-writer.mjs
@@ -3,6 +3,7 @@ import process from 'node:process';
 import { createConsumer } from '../bus/kafka/consumer.mjs';
 import { startControlApi } from '../core/control-api.mjs';
 import { routeHistoryRecord } from '../core/history-records.mjs';
+import { shouldRunDerivedRefreshForEvent } from '../core/history-writer-refresh-policy.mjs';
 import { createLogger, serializeError } from '../core/log.mjs';
 import {
   buildIntentRequestOutcomeNotification,
@@ -131,6 +132,9 @@ const state = {
   last_intent_request_outcomes_at: null,
   latest_intent_request_outcomes: null,
   intent_request_outcomes_error: null,
+  derived_refresh_skipped_count: 0,
+  last_derived_refresh_skipped_at: null,
+  last_derived_refresh_skipped_topic: null,
   notification_count: 0,
   notification_error_count: 0,
   last_notification_at: null,
@@ -176,6 +180,16 @@ await consumer.run({
         partition,
         offset: message.offset,
       };
+      const shouldRunDerivedRefresh = shouldRunDerivedRefreshForEvent({
+        event,
+        now: handledAt,
+        maxEventAgeMs: config.historyWriterDerivedRefreshMaxEventAgeMs,
+      });
+      if (!shouldRunDerivedRefresh) {
+        state.derived_refresh_skipped_count += 1;
+        state.last_derived_refresh_skipped_at = handledAt;
+        state.last_derived_refresh_skipped_topic = topic;
+      }
       if (topic === config.kafkaTopicOpsFundingObservation && writeResult.inserted) {
         state.last_funding_observation_write_at = state.last_write_at;
       }
@@ -192,7 +206,7 @@ await consumer.run({
         }
       }
       await publishLiquidityNotification({ topic, event });
-      if (portfolioMetricTopics.has(topic)) {
+      if (shouldRunDerivedRefresh && portfolioMetricTopics.has(topic)) {
         try {
           await refreshPortfolioMetrics();
         } catch (error) {
@@ -205,7 +219,7 @@ await consumer.run({
           });
         }
       }
-      if (quoteOutcomeTopics.has(topic)) {
+      if (shouldRunDerivedRefresh && quoteOutcomeTopics.has(topic)) {
         try {
           const records = await refreshQuoteOutcomeAttributions();
           await publishQuoteOutcomeNotifications(records, {
@@ -221,7 +235,7 @@ await consumer.run({
           });
         }
       }
-      if (intentRequestOutcomeTopics.has(topic)) {
+      if (shouldRunDerivedRefresh && intentRequestOutcomeTopics.has(topic)) {
         try {
           const records = await refreshIntentRequestOutcomeAttributions();
           await publishIntentRequestOutcomeNotifications(records, {
diff --git a/src/core/history-writer-refresh-policy.mjs b/src/core/history-writer-refresh-policy.mjs
new file mode 100644
index 0000000..700707c
--- /dev/null
+++ b/src/core/history-writer-refresh-policy.mjs
@@ -0,0 +1,15 @@
+export function shouldRunDerivedRefreshForEvent({
+  event,
+  now = new Date().toISOString(),
+  maxEventAgeMs,
+} = {}) {
+  const maxAge = Number(maxEventAgeMs);
+  if (!Number.isFinite(maxAge) || maxAge < 0) return true;
+
+  const eventAt = event?.ingested_at || event?.observed_at || null;
+  if (!eventAt) return true;
+
+  const age = Date.parse(now) - Date.parse(eventAt);
+  if (!Number.isFinite(age)) return true;
+  return age <= maxAge;
+}
diff --git a/src/lib/config.mjs b/src/lib/config.mjs
index c3779b7..a6ebae1 100644
--- a/src/lib/config.mjs
+++ b/src/lib/config.mjs
@@ -39,6 +39,7 @@ const DEFAULTS = {
   kafkaConsumerGroupExecutor: 'trade-executor-v1',
   kafkaConsumerGroupOpsSentinel: 'ops-sentinel-v1',
   kafkaConsumerGroupOperatorDashboard: 'operator-dashboard-v1',
+  historyWriterDerivedRefreshMaxEventAgeMs: 5 * 60 * 1000,
   strategyStateDir: './var/strategy-state',
   executorStateDir: './var/executor-state',
   liquidityStateDir: './var/liquidity-state',
@@ -426,6 +427,10 @@ export function loadConfig({ envPath = '.env' } = {}) {
     kafkaConsumerGroupOperatorDashboard:
       process.env.KAFKA_CONSUMER_GROUP_OPERATOR_DASHBOARD
       || DEFAULTS.kafkaConsumerGroupOperatorDashboard,
+    historyWriterDerivedRefreshMaxEventAgeMs: parseNumber(
+      process.env.HISTORY_WRITER_DERIVED_REFRESH_MAX_EVENT_AGE_MS,
+      DEFAULTS.historyWriterDerivedRefreshMaxEventAgeMs,
+    ),
     strategyStateDir: process.env.STRATEGY_STATE_DIR || DEFAULTS.strategyStateDir,
     executorStateDir: process.env.EXECUTOR_STATE_DIR || DEFAULTS.executorStateDir,
     liquidityStateDir: process.env.LIQUIDITY_STATE_DIR || DEFAULTS.liquidityStateDir,
diff --git a/test/history-writer-refresh-policy.test.mjs b/test/history-writer-refresh-policy.test.mjs
new file mode 100644
index 0000000..313c8bb
--- /dev/null
+++ b/test/history-writer-refresh-policy.test.mjs
@@ -0,0 +1,29 @@
+import test from 'node:test';
+import assert from 'node:assert/strict';
+
+import { shouldRunDerivedRefreshForEvent } from '../src/core/history-writer-refresh-policy.mjs';
+
+test('history writer derived refresh policy skips stale replayed events', () => {
+  assert.equal(shouldRunDerivedRefreshForEvent({
+    event: {
+      ingested_at: '2026-05-05T07:56:03.203Z',
+    },
+    now: '2026-05-07T14:12:00.000Z',
+    maxEventAgeMs: 300000,
+  }), false);
+});
+
+test('history writer derived refresh policy runs for fresh and undated events', () => {
+  assert.equal(shouldRunDerivedRefreshForEvent({
+    event: {
+      ingested_at: '2026-05-07T14:11:52.729Z',
+    },
+    now: '2026-05-07T14:12:00.000Z',
+    maxEventAgeMs: 300000,
+  }), true);
+  assert.equal(shouldRunDerivedRefreshForEvent({
+    event: {},
+    now: '2026-05-07T14:12:00.000Z',
+    maxEventAgeMs: 300000,
+  }), true);
+});