Corn with green husk via Say-Cheese via iStockCorn prices are down 3 to 4 cents on Monday morning. Futures posted losses of 1 ½ to 5 cents on the Friday session, as September and December both closed the week with a 23 ½ cent loss. The CmdtyView national average Cash Corn price was down 6 cents at $4.10. CFTC data released on Friday afternoon showed managed money adding 75,490 contracts to their net long in corn futures and options in the week of July 28. More News from BarchartAgRural estimate the Brazilian second crop corn at 69% harvested in the center south region.