December Corn futures posted a sharp key reversal during today's session, dipping to a new contract low before rallying to close above the previous day's high. The market also reclaimed its 10-day moving average, drawing attention from technical traders. The upward momentum was supported by formal White House backing for year-round E15, which provided optimism for increased domestic ethanol usage. Additionally, weekly export sales offered further support, with old crop sales at 743,000 metric tons and new crop sales reaching 736,000 metric tons, landing at the upper end of market expectations.