On the Vietnamese Stock Exchange, banking stocks attract the majority of investors, banking stocks are always considered as "king stocks" in the stock market. However, share prices of Vietnamese commercial banks have fluctuated in recent years, which affects investment decisions, because bank stock prices are directly related to market value and position of banks in the market. The objective of this study is to examine the impact of bank liquidity, bank stock liquidity on stock price volatility of 17 commercial banks listed on the Vietnam Stock Exchange, HOSE, HNX and UPCoM. The study uses the quarterly audited financial statements from the first quarter of 2006 to fourthquarter of 2020; it includes 497 observations. Data on GDP and inflation are compiled from the International Monetary Fund and theVietamese General Statistics Office. Once collected, the data were organized along the line of unbalanced panel data. The results show that financial gap (FGAP) has a positive impact on bank stock price volatility, high financial gap, low liquidity, and high volatility in bank stock prices; whereas the size of total assets and the change in the exchange rate have negative impact on stock price volatility of listed commercial banks. This study still-has no evidence to conclude that stock liquidity has an impact on stock price volatility of listed commercial banks. There
for, in order to have a high capitalization value and a good position in the market, managers need to manage well not only market factors but also factors in banking operations, especially bank liquidity factor. Bank liquidity is almost never considered in relation to bank stock price volatility in previous studies.