From 6bb6a3e8cd883c789cdf62c385a8dcb7e93acb05 Mon Sep 17 00:00:00 2001
From: "Samuel EF. Tinnerholm" <samuel.tinnerholm@gmail.com>
Date: Sun, 24 May 2026 17:51:50 +0300
Subject: [PATCH] fix: map cashValue to unrealizedPnL in polymarket_us

Fixes #533
---
 core/src/exchanges/polymarket_us/normalizer.ts | 12 ++++++++----
 1 file changed, 8 insertions(+), 4 deletions(-)

diff --git a/core/src/exchanges/polymarket_us/normalizer.ts b/core/src/exchanges/polymarket_us/normalizer.ts
index 1b9efccc..baa417f0 100644
--- a/core/src/exchanges/polymarket_us/normalizer.ts
+++ b/core/src/exchanges/polymarket_us/normalizer.ts
@@ -459,16 +459,20 @@ export class PolymarketUSNormalizer {
             const totalCost = fromAmount(pos.cost);
             const entryPrice = size > 0 ? Math.abs(totalCost) / size : 0;
 
+            // cashValue is the current mark-to-market value of the position.
+            // unrealizedPnL = cashValue - abs(cost).
+            const cashValue = fromAmount(pos.cashValue);
+            const unrealizedPnL = cashValue - Math.abs(totalCost);
+            const currentPrice = size > 0 ? cashValue / size : 0;
+
             results.push({
                 marketId: slug,
                 outcomeId: isLong ? `${slug}:long` : `${slug}:short`,
                 outcomeLabel: isLong ? 'long' : 'short',
                 size,
                 entryPrice,
-                // SDK does not expose live mark on the position object.
-                // Callers must enrich with current price if needed.
-                currentPrice: 0,
-                unrealizedPnL: 0,
+                currentPrice,
+                unrealizedPnL,
                 realizedPnL: fromAmount(pos.realized),
             });
         }