The adjustment in price target by BMO Capital reflects a recalibration of expectations for Nucor's stock, potentially due to market conditions or company performance. However, maintaining the Market Perform rating suggests that the analyst sees no significant change in the company's fundamentals that would alter its investment outlook drastically. The slight decrease in price target might have a neutral to slightly negative short-term impact on the stock price, as it indicates a minor adjustment rather than a fundamental shift in the company's outlook.