diff --git a/src/main.py b/src/main.py
index 965261a..5a7f711 100644
--- a/src/main.py
+++ b/src/main.py
@@ -29,6 +29,7 @@ from src.core.priority_queue import PriorityTaskQueue
 from src.core.risk_manager import CircuitBreakerTripped, FatFingerRejected, RiskManager
 from src.db import get_latest_buy_trade, init_db, log_trade
 from src.evolution.daily_review import DailyReviewer
+from src.evolution.optimizer import EvolutionOptimizer
 from src.logging.decision_logger import DecisionLogger
 from src.logging_config import setup_logging
 from src.markets.schedule import MarketInfo, get_next_market_open, get_open_markets
@@ -745,6 +746,7 @@ async def _handle_market_close(
     telegram: TelegramClient,
     context_aggregator: ContextAggregator,
     daily_reviewer: DailyReviewer,
+    evolution_optimizer: EvolutionOptimizer | None = None,
 ) -> None:
     """Handle market-close tasks: notify, aggregate, review, and store context."""
     await telegram.notify_market_close(market_name, 0.0)
@@ -772,6 +774,14 @@ async def _handle_market_close(
         f"Lessons: {', '.join(scorecard.lessons) if scorecard.lessons else 'N/A'}"
     )
 
+    if evolution_optimizer is not None:
+        await _run_evolution_loop(
+            evolution_optimizer=evolution_optimizer,
+            telegram=telegram,
+            market_code=market_code,
+            market_date=market_date,
+        )
+
 
 def _run_context_scheduler(
     scheduler: ContextScheduler, now: datetime | None = None,
@@ -802,6 +812,35 @@ def _run_context_scheduler(
         )
 
 
+async def _run_evolution_loop(
+    evolution_optimizer: EvolutionOptimizer,
+    telegram: TelegramClient,
+    market_code: str,
+    market_date: str,
+) -> None:
+    """Run evolution loop once at US close (end of trading day)."""
+    if market_code != "US":
+        return
+
+    try:
+        pr_info = await evolution_optimizer.evolve()
+    except Exception as exc:
+        logger.warning("Evolution loop failed on %s: %s", market_date, exc)
+        return
+
+    if pr_info is None:
+        logger.info("Evolution loop skipped on %s (no actionable failures)", market_date)
+        return
+
+    await telegram.send_message(
+        "<b>Evolution Update</b>\n"
+        f"Date: {market_date}\n"
+        f"PR: {pr_info.get('title', 'N/A')}\n"
+        f"Branch: {pr_info.get('branch', 'N/A')}\n"
+        f"Status: {pr_info.get('status', 'N/A')}"
+    )
+
+
 async def run(settings: Settings) -> None:
     """Main async loop — iterate over open markets on a timer."""
     broker = KISBroker(settings)
@@ -816,6 +855,7 @@ async def run(settings: Settings) -> None:
         aggregator=context_aggregator,
         store=context_store,
     )
+    evolution_optimizer = EvolutionOptimizer(settings)
 
     # V2 proactive strategy components
     context_selector = ContextSelector(context_store)
@@ -1109,6 +1149,7 @@ async def run(settings: Settings) -> None:
                                         telegram=telegram,
                                         context_aggregator=context_aggregator,
                                         daily_reviewer=daily_reviewer,
+                                        evolution_optimizer=evolution_optimizer,
                                     )
                             except Exception as exc:
                                 logger.warning("Market close notification failed: %s", exc)
diff --git a/tests/test_main.py b/tests/test_main.py
index 93318ee..378077a 100644
--- a/tests/test_main.py
+++ b/tests/test_main.py
@@ -11,7 +11,13 @@ from src.core.risk_manager import CircuitBreakerTripped, FatFingerRejected
 from src.db import init_db, log_trade
 from src.evolution.scorecard import DailyScorecard
 from src.logging.decision_logger import DecisionLogger
-from src.main import _handle_market_close, _run_context_scheduler, safe_float, trading_cycle
+from src.main import (
+    _handle_market_close,
+    _run_context_scheduler,
+    _run_evolution_loop,
+    safe_float,
+    trading_cycle,
+)
 from src.strategy.models import (
     DayPlaybook,
     ScenarioAction,
@@ -1306,3 +1312,45 @@ def test_run_context_scheduler_invokes_scheduler() -> None:
     _run_context_scheduler(scheduler, now=datetime(2026, 2, 14, tzinfo=UTC))
 
     scheduler.run_if_due.assert_called_once()
+
+
+@pytest.mark.asyncio
+async def test_run_evolution_loop_skips_non_us_market() -> None:
+    optimizer = MagicMock()
+    optimizer.evolve = AsyncMock()
+    telegram = MagicMock()
+    telegram.send_message = AsyncMock()
+
+    await _run_evolution_loop(
+        evolution_optimizer=optimizer,
+        telegram=telegram,
+        market_code="KR",
+        market_date="2026-02-14",
+    )
+
+    optimizer.evolve.assert_not_called()
+    telegram.send_message.assert_not_called()
+
+
+@pytest.mark.asyncio
+async def test_run_evolution_loop_notifies_when_pr_generated() -> None:
+    optimizer = MagicMock()
+    optimizer.evolve = AsyncMock(
+        return_value={
+            "title": "[Evolution] New strategy: v20260214_050000",
+            "branch": "evolution/v20260214_050000",
+            "status": "ready_for_review",
+        }
+    )
+    telegram = MagicMock()
+    telegram.send_message = AsyncMock()
+
+    await _run_evolution_loop(
+        evolution_optimizer=optimizer,
+        telegram=telegram,
+        market_code="US",
+        market_date="2026-02-14",
+    )
+
+    optimizer.evolve.assert_called_once()
+    telegram.send_message.assert_called_once()