This paper examines tracking stock issuances, a relatively uncommon method of equity restructuring. I utilize likely the entire population of tracking stock issuances on US exchanges – from the first ever in October 1984 to the most recent one in November 2009 – in order to analyze the effect that they have on the shortrun excess returns of issuing companies. I analyze the excess returns of companies that issue tracking stock that trade in the US, one year before and one year after completion of their restructuring. The results of this paper indicate that companies perform worse relative to a benchmark market index in the year following their tracking stock restructuring. However, it is important to note that the number of observations studied is relatively small, as there have been only 41 issuances of tracking stock since the first recorded case. This suggests that more data and greater research are necessary in order to more accurately measure the effects of tracking stock restructurings. With the limited data available, I find that there is a statistically significant decrease in excess stock returns following tracking stock issuances.