Retail investors’ tendencies to hold foreign currencies are driven by a mix of cognitive shortcuts, emotional responses, and social signals that shape perceived risk and opportunity. Overconfidence leads many individuals to overestimate their ability to time exchange moves; research by Terrance Odean University of California, Berkeley shows overconfidence drives excessive trading and risk-taking in retail portfolios. Loss aversion and reference dependence make potential depreciation of a domestic currency feel intolerable, a dynamic rooted in Prospect Theory by Daniel Kahneman Princeton University and Amos Tversky Hebrew University of Jerusalem, which explains why investors cling to foreign cash as a way to avoid perceived losses in local purchasing power. Holding foreign currency can be a rational hedge against weak macroeconomic policy, but behavioral forces often amplify or distort that response.
Cognitive drivers and heuristics
Heuristics such as the availability heuristic and anchoring push attention toward recent exchange-rate headlines or a memorable devaluation, prompting disproportionate currency purchases after salient events. Daniel Kahneman Princeton University documented how availability skews judgment of frequency and risk. Representativeness and the illusion of pattern lead small investors to extrapolate short-term movements into long-term trends. Empirical behavioral-finance work by Brad Barber University of California, Davis and Terrance Odean University of California, Berkeley highlights how these biases translate into persistent, often suboptimal portfolio choices.
Social, cultural, and institutional context
Herd behavior and sentiment amplify private biases; models by Nicholas Barberis Yale University and Andrei Shleifer Harvard University show how investor sentiment can cause correlated positions in assets, including currencies. Cultural and territorial factors matter: diaspora communities and remittance recipients may prefer a particular foreign currency for social and transactional reasons, blending rational hedging with familiarity bias described by Meir Statman Santa Clara University. In countries with capital controls or unstable institutions, behavioral responses interact with structural constraints, producing shadow-market currency hoarding that has broader environmental and economic consequences, including liquidity shortages and price distortions.
Consequences range from personal opportunity costs and increased volatility in small investors’ net worth to systemic effects when collective behavior drives exchange-rate misalignments. Recognizing these biases—overconfidence, loss aversion, availability, herding, and familiarity bias—allows advisers and policymakers to design clearer information, default options, and safeguards that separate rational hedging from emotionally driven currency holding.