Since 2005, the proportion of the foreign investment in Taiwan stock market is formally beyond our local institutions, it becomes very important growth and support force. On the other hand, the developing global information technology makes our enterprises grow more active, it confirms our firm supply position in global market and create a substantial income, while also to attract foreign investors approach Taiwan stock market. 　　This paper examines the interrelationship among company factors, market factors and foreign share holding in Taiwan fabless semiconductor companies by panel data from January 2003 to December 2011 including 108 weeks data. 　　The Fixed Effect Model is adopted as our methodology, the major findings are as follows: First, three variables of company factors present a small amount of negative impact on foreign share holding. About the market factors, MSCI weight value and market to book value have significantly positive impact, the variable of U.S. dollar against NT dollar exchange rate has a minimal positive impact on foreign share holding. Other market factors have no impact. Furthermore, Foreign investors also prefer those firms with low stock turnover rate and low corporate systematic risk β value. 　　The results of this study offer our domestic government agencies, corporate financial officers and the public a strategic portfolio to create profit in Taiwan stock market.