水五金產業在全盛時期,曾是我國重要的產業之一,然近年產業成長已趨緩。源自對於水五金產業發展的關注,本文以水五金企業為研究對象。首先,介紹台灣水五金產業現況,並且選擇和成、橋椿、成霖三家上市公司為研究樣本,研究期間自2008年第一季至2015年第三季。其次,選取新台幣兌美元匯率、生產指數(泵、壓縮機、活栓及活閥製造業)、研究發展費用率與加權平均資金成本為解釋變數,探討對樣本公司股價與股票報酬之影響因素為何。本文迴歸模型實證結果發現,顯著影響和成、成霖其股票價格與報酬率之解釋變數為「生產指數(泵、壓縮機、活栓及活閥製造業)」及「加權平均資金成本」。而橋椿公司僅生產指數對股價具有顯著影響,對其股票報酬率具有顯著影響的變數則只有加權平均資金成本。
The purpose of this study is to investigate the determinants of stock prices for water hardware companies. First, this paper introduces the current status of water hardware industry in Taiwan and selects three companies : Hocheng Corporation, Sunspring Metal Corporation and Globe Union Industrial Corporation, as the research targets. Second, we choose four explanatory variables to study the determinants of these firms’ stock prices and returns, i.e. NTD/USD exchange rate, production index (plumbing), R&D/Sales ratio, and weighted average cost of capital. The sample period is from 2008 Q1 to 2015 Q3. Our empirical findings show that production index (plumbing) and weighted average costs of capital significantly affect the stock prices and returns of Hocheng and Globe Union. For Sunspring, only production index significantly affects its stock prices, while weighted average costs of capital significantly affect its stock returns.