本文調查台灣公司在上市櫃後一年內又發行新股之後的長期績效，平均而言，這些公司的表現劣於大盤、產業和對照公司；本文假設這些公司因增資動機而會有不同的表現，為了檢驗這個命題，本文將樣本區分為高成長、機會主義與低品質等三組，結果發現，高成長與低品質公司的表現分別為最佳與最差；另外，公司發行前的獲利能力與管理者所有權和長期績效為正相關，而自然人大股東與關係企業的所有權則對長期績效有負面影響；這些結果隱含管理者與股東利益的一致性及公司治理與企業價值有關。

This study investigates the long-run stock performance of Taiwanese firms that conduct seasoned equity offerings (SEOs) in one year after their initial public offerings (IPOs). On average, these IPO-SEO firms underperform the market, their industries, and the matching sample. We hypothesize that these firms would perform differently according to the reasons behind their fast reissues. To examine this issue, we divide the sample into three groups: growth, timing, and unattractive firms. The results show that growth firms perform best and low-quality firms worst. We also find that pre-issue profitability and managerial ownership are positively associated with IPO-SEO firms' performance, while large-block individuals' and affiliated companies' ownership negatively affects their longrun performance. These results imply that managerial alignment and corporate governance are associated with the firm value.