I want to share something that many people may be confused about when entering a trading app—the strange abbreviations that appear after stock tickers, such as CA, XD, XM, T1, T2, etc. What do they really mean?

Let’s start with CA. CA stands for Corporate Action, which means that an important event is about to happen for that stock within 7 days. When you see CA appear, click in to view the details so you can see what it is and when it will happen.

For the X-type abbreviations, they come from the word Excluding, which means investors do not receive certain rights. For example, XD (Excluding Dividend). If you buy during the XD period, you will not receive that round of dividends. But if you buy before the XD date, you will receive the dividends as normal. XM (Excluding Meetings) means you do not have the right to attend shareholders’ meetings. XR (Excluding Right) means you do not have the right to subscribe for newly issued shares, and so on.

For the T type, it’s a warning that the stock has surged significantly and speculation is very high. The Stock Exchange issues measures to limit trading. T1 requires buying using only a cash account. T2 is even more stringent than T1—you are not allowed to use it as collateral. T3 is the strictest: only cash accounts are allowed, and you may not use it as collateral, nor may you offset positions. If you sell, your buying power will return the next day instead.

There are many other abbreviations used to warn investors, such as H (Trading Halt), which means trading is temporarily halted for one session; SP (Trading Suspension), which means trading is suspended for more than one session; NP (Notice Pending), indicating the company has items it needs to report; NC (Non-Compliance), meaning the company meets the criteria and may be delisted. The company has 1 year to make corrections. C (Caution) indicates the company has financial problems and is high risk—so you should avoid it.

Understanding the meaning of CA and these abbreviations is very important for investors because they tell you the stock’s status and the rights you will receive. Before buying any stock, check whether any of these symbols appear to better understand the situation clearly.