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This paper aims to examine the effect of increases in alliance portfolio cultural diversity (IAPCD) on a firm’s performance and how portfolio configuration characteristics moderate this effect, aiming to enable managers to make better partner choice and portfolio configuration decisions to improve performance.

The sample includes 2,326 focal firms from 93 countries that formed 7,616 alliances between the years 1992 and 2006. This study uses generalized method of moments estimation to examine the effects of portfolio changes on next year’s firm sales performance.

Results reveal an inverted-U relationship between IAPCD and firm performance. Data limitations led to examining moderating effects only on the upslope portion of the inverted-U, indicating that an increasing percentage of joint ventures in a firm’s alliance portfolio strengthens IAPCD’s contribution to …