The slight reduction in price target from $101 to $100 by Piper Sandler, while maintaining an Overweight rating, suggests a minor adjustment in valuation rather than a fundamental change in the company's outlook. This adjustment is likely based on recent market conditions or minor changes in financial projections. The Overweight rating indicates that Piper Sandler still views Heartland Bancorp positively, suggesting confidence in its future performance despite the minor price target adjustment.