Finance

Physics

Internal medicine

Disease

Coronavirus disease 2019 (COVID-19)

Infectious disease (medical specialty)

Mechanics

Liberian dollar

World Wide Web

Outbreak

Bubble

Virology

Economics

Acoustics

Economic bubble

2019-20 coronavirus outbreak

Computer science

Monetary economics

Period (music)

Pound (networking)

Severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2)

Medicine

Asian Economics Letters

In this note, we utilize hourly exchange rate data for Japanese Yen, Canadian dollar, European Euro and the British pound to search for possible bubble type behavior. We identify evidence that bubble activity characterizes all four exchange rates more so in the COVID-19 period. We also show that bubble activity intensified during the COVID-19 period, implying markets became relatively more inefficient compared to the pre-COVID-19 period.

Did Bubble Activity Intensify During COVID-19?