diff --git a/src/main/tjava/com/r35157/libs/jupiter/perps/impl/anchoridl/AnchorIdlJupiterPerpsPositionDecoder.tjava b/src/main/tjava/com/r35157/libs/jupiter/perps/impl/anchoridl/AnchorIdlJupiterPerpsPositionDecoder.tjava
index 65e05bc..f08f7c1 100644
--- a/src/main/tjava/com/r35157/libs/jupiter/perps/impl/anchoridl/AnchorIdlJupiterPerpsPositionDecoder.tjava
+++ b/src/main/tjava/com/r35157/libs/jupiter/perps/impl/anchoridl/AnchorIdlJupiterPerpsPositionDecoder.tjava
@@ -47,11 +47,21 @@ class AnchorIdlJupiterPerpsPositionDecoder {
                 .valueOf(rawCollateralUsd)
                 .movePointLeft(6);
 
+        long rawSizeUsd = ByteBuffer
+                .wrap(data, SIZE_USD_OFFSET, U64_LENGTH)
+                .order(ByteOrder.LITTLE_ENDIAN)
+                .getLong();
+
+        ΩUSDCAmountΩ sizeUsd = BigDecimal
+                .valueOf(rawSizeUsd)
+                .movePointLeft(6);
+
         JupiterPerpsPosition pos = new JupiterPerpsPosition(
                 positionAccount,
                 entryPrice,
                 direction,
                 tradedTokenMint,
+                sizeUsd,
                 collateralUsd
         );