Recently, many novice investors have asked me how to track earnings seasons.

Actually, knowing the timing of earnings releases is really important, as it directly affects whether you can make early decisions.
Today, I want to share the earnings calendar I’ve compiled for Taiwan and U.S. stocks, so everyone doesn’t have to search for information everywhere.

First, let’s talk about Taiwan stocks.
Taiwan’s regulations are quite strict, and transparency is high.
Public companies must complete announcements before the statutory deadline, and large companies like TSMC often rush to release their reports earlier.
The 2026 schedule roughly looks like this: annual reports must be announced before March 31; Q1 quarterly reports before May 15; Q2 quarterly reports before August 14; Q3 quarterly reports before November 14.
Very large companies like TSMC and MediaTek have their annual report deadline moved up to March 15.

There’s a detail many people overlook: Taiwan stocks have a rare global regulation—
Companies must announce their previous month’s monthly revenue before the 10th of each month.
The revenue figures are usually released at the beginning of the month and are real-time, so investors often use them as a leading indicator before quarterly reports.
I personally rely on these monthly revenue figures to judge a company’s short-term performance, which can sometimes be much faster than waiting for quarterly reports.

The timing of earnings calls is also worth noting.
Annual report earnings calls are concentrated from late March to mid-May, with a peak in mid to late March.
Quarterly report earnings calls usually start before the official filing, for example, the Q1 2026 earnings call for TSMC will likely be in mid to late April, with companies like MediaTek and Largan following in early May.
During this period, stock prices tend to fluctuate more, making it a prime hunting ground for short-term traders.

In the U.S., the rules are a bit more complex.
First, understand this concept—when we say “companies release earnings,” we usually mean the press releases and earnings calls, not the SEC filing deadline.
Earnings calls happen before the official filings.

The filing deadlines for annual reports (10-K) depend on company size.
Large accelerated filers (market cap over $700 million) must file within 60 days after year-end; smaller companies have 75 to 90 days.
For companies ending December 31, 2025, large companies’ deadline is around March 2, 2026.
For non-U.S. companies listed in the U.S., like TSMC ADRs, filing is on Form 20-F, which gives a more relaxed timeline of about four months.

The peak of earnings release season is usually from late January to late February.
Most companies announce before market open or after hours, not waiting for the SEC deadline.
Quarterly reports (10-Q) have tighter deadlines: large companies must file within 40 days after quarter-end, smaller ones within 45 days.
For Q1 2026, the deadline is roughly between May 11 and 15.

U.S. earnings calls are also lively.
They usually start about 15 days after quarter-end, with big banks leading the way, followed by the “super earnings week” for tech giants.
For Q1 2026, TSMC’s call is around April 16, Tesla around April 20, Google around April 22, Microsoft and Meta on April 28-29, Amazon and Apple from April 29 to May 1.
These dates are market focal points, and stock prices often swing significantly around them.

To find specific earnings dates and data, Taiwan’s Public Information Observation Station (MOPS) is the official and most authoritative source.
Many brokerage apps also have earnings call calendars, which are quite convenient.
For U.S. stocks, you can check the company’s investor relations website directly, or use platforms like Yahoo Finance, Nasdaq, Investing.com, SeekingAlpha.
For original financial data, go to the SEC’s EDGAR database—all reports of U.S.-listed companies are there, completely free.

Honestly, earnings season is a must-know for investors.
Whether in Taiwan or the U.S., mastering these timelines and inquiry channels can help you get ahead during earnings season.
I hope this compilation is helpful, so next time you can face earnings season more confidently.