The study is to determine the role of the stock market in the economic development of the country through the use of Automated Trading System (ATS), which replaced the use of Cal-over mode on the position' of Automated Trading System which is in savings and capital formulation.
The study employs primary and secondary sources of data. The primary source of data was employed to elicit information from the respondent on the concept considered. Based on this information source, survey analysis of inferential methodology using chi-square analysis was adopted as a method of hypotheses testing.
From the analysis of the study, it was found out that the introduction of Automated Trading System (ATS) has had positive impact on the development of stock exchange market in Nigeria. The study suggested that the Nigeria Stock Exchange should be able to meet the various international benchmarks for trading and the stock exchange should upgrade their transaction system for proper and adequate transactions in the market.