favorable reputation (network of ties) to attract alliance partners. We use stock market and
network characteristics to predict a firms' propensity to engage in product alliances. Using
1,877 observations of 302 biopharmaceutical firms over a twenty-year period, we find that
increase in stock returns and a decrease in stock risk is associated with an increase in firms'
product alliances. The position of the firm in its network improves product alliance formation …