The rejection of an acquisition offer can have mixed effects on a company's stock price. On one hand, it could be seen as a sign of confidence in Carver Bancorp's standalone value and future prospects, potentially leading to a positive market reaction. On the other hand, investors who were looking forward to the benefits of the acquisition, such as increased capital or strategic advantages, might be disappointed, which could negatively impact the stock price. Without further details on the reasons for the rejection or the terms of the offer, the short-term impact is uncertain, hence a neutral score is given.