I just noticed that many people still don’t understand these stock suffix symbols at all. CA, XD, XM, T1—what they mean is that CA stands for Corporate Action, indicating that a significant event will happen to the stock within 7 days.

The truth is, these symbols are very important if you want to trade stocks, because they tell you what will happen to that particular stock. If you click in to view the details, you’ll see what the event is and when it will happen.

Let’s break it down clearly.

The first group is the X series. Here, CA means Excluding, meaning you will not receive certain rights. For example, XD (Excluding Dividend): if you buy now, you won’t get the dividend this round. But if you buy and hold until next time, you’ll get XM (Excluding Meetings), which means you won’t attend the shareholder meeting. XR (Excluding Right) means you won’t have the right to subscribe for newly issued shares. XW (Excluding Warrant) means you won’t receive warrants.

There are several other ones like XS, XT, XA, XN, XB—but the principle is the same: you won’t receive the various rights that the company is about to grant.

As for the T series, these are warnings from the Stock Exchange because the stock price is rising too fast. T1 means it must be bought with cash only. If the price keeps surging, it will move up to T2, T3—becoming even more strict. Collateral securities are not allowed. Netting/offsetting is not allowed.

There are also other warning symbols. H (Trading Halt) means trading is temporarily halted for 1 round. SP (Trading Suspension) means it is halted for longer. NP (Notice Pending) means the company has information it must report. NC (Non-Compliance) means the company is in a dangerous situation—such as having prolonged losses, not submitting financial statements—with a 1-year period to make corrections. ST (Stabilization) means the company is trying to stabilize the price. C (Caution) means there is a financial issue, low shareholder equity, or a court-approved business rehabilitation.

In short, before buying any stock, you need to check what symbols appear on that stock, because they tell you everything you need to know. It’s not difficult—just click to see the CA, i.e., what event is coming, and then decide whether to get in or not.