diff --git a/src/app/api/fee-compare/route.ts b/src/app/api/fee-compare/route.ts
index d6d53301..6c579c46 100644
--- a/src/app/api/fee-compare/route.ts
+++ b/src/app/api/fee-compare/route.ts
@@ -1115,31 +1115,40 @@ function reconstructGainsPositions(trades: GainsApiTrade[], cutoffMs: number): P
   const INCREASE_ACTIONS = new Set(["TradePosSizeIncrease"]);
   const CLOSE_ACTIONS = new Set(["TradeClosedMarket", "TradeClosedTP", "TradeClosedSL", "TradeClosedLIQ"]);
 
-  const byId = new Map<number, { open?: GainsApiTrade; close?: GainsApiTrade }>();
+  const byId = new Map<number, { open?: GainsApiTrade; close?: GainsApiTrade; lastIncrease?: GainsApiTrade }>();
   for (const t of trades) {
     if (!byId.has(t.id)) byId.set(t.id, {});
     const e = byId.get(t.id)!;
     if (OPEN_ACTIONS.has(t.action)) e.open = t;
-    else if (INCREASE_ACTIONS.has(t.action) && e.open) {
-      e.open = { ...e.open, size: t.size, leverage: t.leverage };
+    else if (INCREASE_ACTIONS.has(t.action)) {
+      if (e.open) e.open = { ...e.open, size: t.size, leverage: t.leverage };
+      // Track increases for positions opened before the window (no open event in data)
+      else if (!e.lastIncrease || new Date(t.date).getTime() < new Date(e.lastIncrease.date).getTime()) {
+        e.lastIncrease = t;
+      }
     }
     else if (CLOSE_ACTIONS.has(t.action)) e.close = t;
   }
 
   const now = Date.now();
   const slices: PositionSlice[] = [];
-  for (const { open, close } of byId.values()) {
-    if (!open) continue;
-    const openMs = new Date(open.date).getTime();
-    if (openMs < cutoffMs) continue;
-    // Still-open positions use now as close time (same as reconstructHlPositions)
+  for (const { open, close, lastIncrease } of byId.values()) {
+    // Use open event if available; fall back to earliest increase in the window
+    // for positions opened before the fetch window (open event not in data).
+    const anchor = open ?? lastIncrease;
+    if (!anchor) continue;
+    const rawOpenMs = new Date(anchor.date).getTime();
     const closeMs = close ? new Date(close.date).getTime() : now;
+    // Skip positions that closed before the analysis window
+    if (closeMs < cutoffMs) continue;
+    // Cap openMs to the window start so long-running positions aren't missed
+    const openMs = Math.max(rawOpenMs, cutoffMs);
     slices.push({
-      coin: open.pair.split("/")[0],
-      notionalUsd: open.size * open.leverage,
+      coin: anchor.pair.split("/")[0],
+      notionalUsd: anchor.size * anchor.leverage,
       openMs,
       closeMs,
-      isLong: open.buy !== false,
+      isLong: anchor.buy !== false,
     });
   }
 
@@ -1480,8 +1489,11 @@ export async function GET(req: Request) {
 
     await Promise.all(fetches);
 
-    // Phase 2: fetch HL funding history for Gains positions (Gains→HL carry projection)
+    // Phase 2: fetch HL funding history + extended Gains history for position reconstruction
     let hlFundingHistoryByCoins: Map<string, Array<{ time: number; rate: number }>> = new Map();
+    // Extended Gains history (1 year) used only for HL funding projection reconstruction —
+    // the fee accounting (taker/borrow/funding fees) still uses gainsTradesData (cutoffMs window).
+    let gainsPositionData: GainsApiTrade[] = gainsTradesData;
     if (
       fetchEvmWallet &&
       (venueA === "gains" || venueB === "gains") &&
@@ -1494,7 +1506,13 @@ export async function GET(req: Request) {
           .map((t) => t.pair.split("/")[0])
       );
       const coinsToFetch = [...gainsCoinSet].slice(0, 6);
-      hlFundingHistoryByCoins = await fetchHlFundingHistory(coinsToFetch, cutoffMs).catch(() => new Map());
+      const extendedCutoffMs = cutoffMs - 365 * 24 * 60 * 60 * 1000;
+      const [fundingHistory, extendedTrades] = await Promise.all([
+        fetchHlFundingHistory(coinsToFetch, cutoffMs).catch(() => new Map<string, Array<{ time: number; rate: number }>>()),
+        fetchGainsTrades(wallet, extendedCutoffMs).catch(() => gainsTradesData),
+      ]);
+      hlFundingHistoryByCoins = fundingHistory;
+      gainsPositionData = extendedTrades;
     }
 
     function buildVenueResult(slug: string, rate: number, note: string, rateIsLive: boolean): VenueResult {
@@ -1663,9 +1681,9 @@ export async function GET(req: Request) {
               hlOpenPositions,
               cutoffMs
             );
-          } else if (venueA === "gains" && gainsTradesData.length > 0) {
+          } else if (venueA === "gains" && gainsPositionData.length > 0) {
             positions = reconstructGainsPositions(
-              gainsTradesData.filter((t) => t.collateralIndex === 3),
+              gainsPositionData.filter((t) => t.collateralIndex === 3),
               cutoffMs
             );
           } else if (venueA === "gmx-v2" && gmxWalletData) {
@@ -1803,9 +1821,9 @@ export async function GET(req: Request) {
               hlOpenPositions,
               cutoffMs
             );
-          } else if (venueB === "gains" && gainsTradesData.length > 0) {
+          } else if (venueB === "gains" && gainsPositionData.length > 0) {
             positions = reconstructGainsPositions(
-              gainsTradesData.filter((t) => t.collateralIndex === 3),
+              gainsPositionData.filter((t) => t.collateralIndex === 3),
               cutoffMs
             );
           } else if (venueB === "gmx-v2" && gmxWalletData) {