“…Beyond the conceptualization of impact investing, a recent literature review by Islam (2021) identifies four main research streams, tackling some more or less original themes: factors affecting the investment decision process, impact evaluations, structure of the industry, and a novel research field focused on behavioral characteristics of investors and investees. Literature reviews, thus, do not specifically identify financial instruments used to realize impact investing (e.g., social bonds, green bonds, or investment funds) as one of the mainstream topics, although more specific reviews recognize, for instance, social impact bonds as a relevant channel and field of study (for a review, see Broccardo et al, 2020).…”