Soybean futures extended their post-WASDE advance, rising eight cents to settle at 1236'0 and bringing two-day gains to 51 cents as the USDA raised export forecasts and trimmed ending stocks. Option open interest expanded across calls and puts, while CVOL stood at 14.6%. Corn futures retreated as weaker demand forecasts for feed and exports offset lower carryout figures, with December corn futures dropping 5 3/4 cents before closing at 447'2 amid heavy call open interest. Wheat futures found technical support from oversold levels, lifting December Chicago wheat above 600'0 to reach 603'6 while Kansas City December wheat climbed to 643'6.