Wells Fargo's decision to maintain its Overweight rating for Deere indicates a positive outlook for the company. However, the lowering of the price target from $510 to $490 may cause some uncertainty among investors. The stock is currently down 1.55%, but the new price target still represents a significant potential increase of 36.91%. The impact on the stock price in the short term is neutral, as the positive rating is balanced by the lowered price target.