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In this article, we use Event Study to explore the impact of announcement of different corporate events on the stock retuens. Let's find out the results and learn more about event-driven data!

On June 9th, TEJ had the honor of being invited to the 2023 International Conference of Taiwan Finance Association, where we presented our research titled "Empirical Analysis of TESG Factor-Based Stock Selection Strategy In The Taiwan Stock Market.

The formation of an investment strategy process includes data collecting, strategy initiating, Screening condition setting, backtesting, and eventually inputting the fund into the market to carry out a strategy. We often have to face the following problems in the process: How to swiftly test the historical performance to ensure the feasibility of investing strategy through […]

TEJ Quantitative investment database covers three different categories of databases, namely market data, financial accounting data, and corporate action event data. The overall database not only has high coverage of Taiwan stock market information but also is point-in-time, which is necessary for quantitative analysis.

In recent years, the efficiency of the Taiwan stock market has been substantially improved due to regulations of information disclosure and the gradual relaxation of daily price limits. Therefore, the relationship between the price momentum of the Taiwan stock market and the expected return is worthy of further exploration. There are some past research on […]

In the 1970s, Eugene Fama introduced the Efficient-market Hypothesis (EMH). The hypothesis assumes that individuals act as rational economic beings who objectively consider all relevant information to make ration decisions. And therefore, the stock price is reasonably estimated by investors and maintains at its “equilibrium price.” However, in the 1980s, anomalies that could not be […]

At the beginning of 2022, the FSC (Taiwan) require listed companies with a capital of more than 10 billion to disclose the Forward-looking Statement before March 15, which caused investors to pay more attention to the pre-audit information. It is generally recognized that the performance of corporate financial reports is positively correlated with the stock market value […]

Ａccording to the Security and Exchange Act, within the first ten days of each calendar month publicly announce and register with the Competent Authority the operating status for the month. In addition to the real-time information of monthly revenue compared with financial reports, it can also assist investors in tracking company fundamentals during the window period of yearly financial reports. Therefore, monthly revenue information has become one of the most important reference indicators for investors to grasp changes in the company’s fundamentals.