Shin, Seungho; Naka, Atsuyuki; Wang, Lei - 2023
volatility of Nikkei 225 stocks. We conclude that there is a positive relationship between economic policy uncertainty and … idiosyncratic volatility. Employing additional uncertainty measures such as monetary, fiscal, trade, and exchange rate policy, we … find similar positive relationships between these policy uncertainty measures and idiosyncratic volatility except for …