A more thorough explanation:

Term: XR
Definition: XR is an abbreviation for "ex-rights," which refers to a stock trading term that indicates a stock's price without the value of its rights. When a company issues new shares, it may offer existing shareholders the right to buy additional shares at a discounted price. The ex-rights date is the first day that a stock trades without the value of those rights. Example: If a company's stock is trading at $50 per share and it announces a new share offering with a discounted price of $40 per share for existing shareholders, the ex-rights date would be the day after the announcement. On that day, the stock price would adjust to reflect the fact that it no longer includes the value of the discounted shares. So, if the discounted shares are worth $5 each, the stock price would drop to $45 per share on the ex-rights date. This example illustrates how the XR abbreviation is used to indicate the ex-rights date and the impact it has on a stock's price. It shows how the value of a stock can change when a company issues new shares and offers existing shareholders the right to buy them at a discounted price.