Recently, many people have asked me how to keep track of the pace of earnings season. In fact, this matters more than you might think. Earnings reports are not just numbers—they are key information that can determine your investment decisions, especially when you want to seize opportunities from stock price volatility during earnings season.

Let’s start with Taiwan’s stock market. Taiwan’s earnings disclosure system is actually quite strict and transparent. All listed companies must follow a timetable, with little flexibility. For annual reports, most companies need to announce them by March 31, but larger companies typically hold their earnings calls earlier. For example, for mega-cap companies like TSMC and MediaTek, starting in 2026 they are even required to file by March 15.

As for quarterly reports, the deadline for third-quarter earnings reports is before November 14. However, in practice, earnings calls are often held gradually from mid-October to mid-November. This timing is especially important because stock prices usually experience larger swings around earnings calls. My own habit is to keep an eye on when each major electronics stock is scheduled to hold an earnings call, and do my homework in advance.

Taiwan also has another regulation that is relatively uncommon in other countries: each company must announce its previous month’s revenue before the 10th of every month. This figure updates quickly, and many investors treat it as a leading indicator ahead of the quarterly reports—very practical.

The easiest place to look up this information is the Public Information Observation Platform (MOPS). This is the official platform of the Taiwan Stock Exchange, and all financial data is available there. Many brokerage apps also provide a pre-organized earnings calendar, so you can see all the important dates at once.

The logic in the U.S. stock market is a bit different. U.S. annual reports are called 10-K, quarterly reports are called 10-Q, and filing deadlines are determined based on company size. Large accelerated filers must submit within 60 days after the end of the fiscal year, while smaller companies have 90 days. The deadline for this year’s Q1 quarterly reports has already passed (between May 11 and May 15), but the third-quarter quarterly reports are expected to be released around mid-November.

Earnings season in the U.S. is usually more lively, because everyone tends to concentrate on releasing annual reports in January and February, and each quarter also has what is known as a “Super Earnings Week.” Benchmark stocks like TSMC ADRs, Tesla, and Apple typically publish results densely within a specific period.

If you want to check U.S. earnings data, you can go directly to the SEC’s EDGAR database. Enter the stock ticker to find all filing documents. If you don’t want to deal with the hassle, platforms like Yahoo Finance, the Nasdaq official website, and SeekingAlpha also offer pre-organized earnings calendars.

My advice is that whether you invest in Taiwan stocks or U.S. stocks, you should mark the important earnings dates on your calendar in advance. Especially for key periods such as the release window for third-quarter earnings, start gathering information about the relevant companies one or two weeks ahead so you can truly get an edge when earnings season arrives. Stock price volatility is often the highest during earnings season—doing your homework is what helps you seize the opportunity.