diff --git a/src/server/backtest/trump.ts b/src/server/backtest/trump.ts
new file mode 100644
index 0000000..292d5cd
--- /dev/null
+++ b/src/server/backtest/trump.ts
@@ -0,0 +1,14 @@
+import type { Candle, Pair } from '../types';
+import { processTrumpCycle, type TrumpCycleConfig, type TrumpCycleResult, type TrumpEventInput } from '../live/trump-cycle';
+
+/** Backtest = ein Cycle-Lauf von frischem State. Gleicher Code-Pfad wie Live (Spec §5). */
+export function runTrumpBacktest(
+  candles15ByPair: Map<Pair, Candle[]>,
+  events: TrumpEventInput[],
+  startCapital: number,
+  cfg: TrumpCycleConfig,
+): TrumpCycleResult {
+  let minTs = Infinity;
+  for (const cs of candles15ByPair.values()) if (cs.length > 0) minTs = Math.min(minTs, cs[0].ts);
+  return processTrumpCycle(candles15ByPair, events, { cash: startCapital, positions: [], cursorTs: minTs - 1 }, cfg);
+}