Have you ever accessed a stock trading app and wondered why some stocks have strange letters appended, such as CA, XD, XM, T1, or H? In fact, these abbreviations are very important for investors because they indicate what event is about to happen to that stock. If you don’t understand them, it’s easy to make the wrong decision.

Let’s start with the CA symbol. “CA” stands for Corporate Action, meaning “company action.” When a stock has a CA tag, it means the company will have some movement or an event within 7 days—such as paying dividends, holding shareholder meetings, or issuing additional shares. You can click on CA to see what the event is and when it will take place.

Abbreviations that follow CA-related stocks are divided into several types. The first group is the X symbols, which start with “Excluding.” This means investors will not receive certain rights, such as XD (Excluding Dividend), which means no dividend; XM (Excluding Meetings), which means you will not attend shareholder meetings; XW (Excluding Warrant), which means you will not receive Warrant rights; XR (Excluding Right), which means you will not have the right to subscribe to newly issued shares; and many others.

One important thing to know about XD is that if you want to receive dividends, you must buy the stock before the ex-dividend date. You can buy it just the day before; you don’t need to hold it for a long time. The dividend will be the same no matter when you buy.

The second type is the T symbol, which is a warning sign that this stock is rising rapidly and speculation is high. Because of this, the stock exchange has issued measures to limit it, classified as T1, T2, and T3 in order of severity. T1 stocks must be purchased with cash only. For T2, in addition to using cash, you are also prohibited from using it as collateral. For T3, there is an additional restriction that you cannot offset trades—meaning if you sell, the money will be returned the next day rather than immediately.

In addition, there are other warning symbols, such as H (Trading Halt), which means the stock’s trading is temporarily halted for one session; SP (Trading Suspension), which means trading is suspended for more than one session; NC (Non-Compliance), which means the company meets criteria that could lead to delisting from the market; and C (Caution), which warns that the company has financial problems or risky operations.

In summary, the CA symbol and the abbreviations that follow it are important tools that help investors understand what is happening with a given stock. Learning what CA and these abbreviations mean is something you shouldn’t overlook. When you see these symbols, click in to view more details so you can increase the likelihood that your investing will go smoothly.