CHICAGO, Nov 13 (Reuters) - Chicago Board of Trade wheat futures closed fractionally lower on Thursday, pressured by ample global supplies including a record-large Argentine harvest, while strength in corn and soybean futures underpinned the market, traders said.

• CBOT December soft red winter wheat WZ25 settled down 1/4 cent at $5.35-3/4 per bushel.

• K.C. December hard red winter wheat KWZ25 ended up 1/4 cent at $5.25-3/4 a bushel and Minneapolis December spring wheat MWEZ25 finished unchanged at $5.69-3/4 a bushel.

• The Buenos Aires Grains Exchange raised its estimate of Argentina's 2025/26 wheat harvest to a record 24 million metric tons, up from 22 million previously. The country's Rosario Exchange on Wednesday also raised its wheat forecast to a record 24.5 million tons.

• Traders were adjusting positions ahead of long-awaited crop supply/demand reports due from the U.S. Department of Agriculture on Friday.

• Ahead of the reports, the first since mid-September, analysts surveyed by Reuters on average expect the government to raise its forecasts of 2025/26 U.S. and global wheat ending stocks.

• Following a 43-day U.S. government shutdown, the USDA on Thursday began releasing export sales data, starting with its weekly report from the week ended September 25, and it planned to issue a list on Friday showing daily sales of U.S. agricultural products over the last six weeks.

• The USDA reported export sales of U.S. wheat in the week to September 25 at 315,900 metric tons, toward the low end of trade expectations for 300,000 to 650,000 tons.

(Reporting by Julie Ingwersen; Editing by Andrea Ricci)

((Julie.ingwersen@thomsonreuters.com; 1-313-484-5283))