Purpose The Government of Korea institutionalized the World Korean Business Convention (WKBC) and the World Korean Business Network (WKBN) to promote Korean diaspora entrepreneurs’ investment in the homeland. Few studies have examined the effectiveness of the WKBC and WKBN and the critical variables affecting them. This paper aims to fill this gap by exploring important variables affecting Korean diaspora entrepreneurs’ investment in the homeland. It also seeks to examine the relationships among these variables to inquire upon a set of critical questions pertaining to Korean diaspora entrepreneurs’ investment in the homeland including the effectiveness of the WKBC and WKBN. Design/methodology/approach To achieve the above purpose, critical variables influencing Korean diaspora entrepreneurs’ investment in the homeland were identified and four hypotheses that include the inquiries pertaining to the effectiveness of the WKBC and WKBN were developed in terms of those variables. The hypotheses were empirically tested using the survey data gathered from the participants of the annual WKBC. Findings The current research found that Korean diaspora entrepreneurs’ evaluation of the investment climate in the homeland was not favorable. The WKBC was positively evaluated by Korean diaspora entrepreneurs willing to make investment, There is discrepancy between expectations of the WKBN’s target group (i.e. Korean diaspora entrepreneurs willing to make investment) and its performance for the group, and there is a difference between ascending and descending Korean diaspora entrepreneurs in assessment of investment value of the homeland. Originality/value A majority of studies on diaspora entrepreneurship and development have so far cast light on ascending diaspora entrepreneurs while neglecting descending diaspora entrepreneurs. In this regard, the most interesting finding of the current study to both researchers and policymakers may be the fact that descending Korean diaspora entrepreneurs assess the investment value of the homeland differently from ascending Korea diaspora entrepreneurs. The finding calls for further research on causes of the difference, and different natures of descending diaspora entrepreneurs compared to those of ascending diaspora entrepreneurs. Such research will enable policymakers to formulate and implement effective strategic diaspora policies that take the differences into consideration.