Leadership changes in major companies often lead to short-term positive sentiment among investors, as it signals potential new strategies and directions. Adam Miller and Andrew Hess's promotions within Knight-Swift Transportation, given their extensive experience and previous contributions to the company's growth, are likely to be viewed positively. Their focus on expanding the LTL footprint and improving margins could signal to investors a continued commitment to growth and profitability, potentially leading to a short-term positive impact on KNX's stock price.