This study examined the linkage among financial sector liberalization variables and stock market
liquidity in Nigeria, using annual data from 1990 to 2023. In conducting the analysis, this study
utilized Error Correction model and Granger Causality tests. Stock Market Liquidity was
modeled as the function of Savings Rate Liberalization, Lending Rate Liberalization, Exchange
Rate Liberalization, Capital market liberalization measured by increase or decrease on foreign
portfolio investment and Current account liberalization measured by net official finance. The
study found that 69.4 variations in stock market liquidity were explained by variation in financial
sector liberalization. The error correction term found significant correction of about 138 percent
from short run disequilibrium to long run equilibrium while the lag selection validates the
application of lag I. at lag I, the study found that the variables are positively related to stock
market liquidity. Granger causality results indicated that there is unidirectional causality
running from exchange rate liberalization to stock market liquidity. The study concludes
relationship between financial sector liberalization and stock market liquidity. It recommended
the effective and implementable monetary policies to back the interest rate liberalization to
enhance liquidity of the stock market and policies to deepen the operational efficiency of the
financial to cushion the negative effect of the financial sector liberalization on the liquidity of
the stock market. The exchange rate liberalization should be deepened and the policies revisited
to meet the stock market liquidity and Nigerian Interest rate liberalization such as lending,
monetary policy rate and prime lending rate should be harmonized with the objective of
enhancing the liquidity of stock market.