Polestar C-1 shares rise 12.76% intraday after announcing plan to change ADS ratio from 1:1 to 1:30, effective by year-end 2025.

think> Okay, let's tackle this query. The user wants me to transform a given Chinese text into a concise news headline following specific rules. Let me start by understanding the requirements. First, the company name must remain unchanged. The input here is "Polestar C-1" and "Polestar Automotive." Wait, the user might have made a typo or inconsistency here. The company name in the input is mentioned as "Polestar C-1" and then "Polestar Automotive." I need to check which one is correct. Since the example uses the company name as given, I'll stick with "Polestar C-1" as the primary name unless there's a reason to think it's a mistake. Maybe "Polestar C-1" is a subsidiary or a specific model, but the second point refers to "Polestar Automotive." Hmm, but the example uses the same company name in both parts. The user might have intended "Polestar C-1" as the main company name here. Next, the percentage change needs to be rounded to two decimal places. The given percentage is 12.76181198%, which rounds to 12.76%. The trailing zeros should be removed, so 12.76% is correct. The time period is intraday, so that's straightforward. The reason for the price movement is the company's announcement of changing the ADS ratio from 1:1 to 1:30, effective by the end of 2025 to increase the stock price. Also, the company is a high-performance EV manufacturer targeting the premium market. Now, structuring the headline. The example has the company name, percentage, time period, and the reason. I need to make sure the key points are included concisely. The example also includes a brief description of the company. So, the headline should start with the company name, followed by the percentage change and time period, then the reason. Then, a second paragraph with the company's main business. Wait, the example's output has two paragraphs. The first is the headline with the percentage and reason, the second is the company description. The user's transformation rules mention including the company name, percentage, time period, and brief reason. So the first sentence is the main headline, then the reason, then the company description. In the input, the company is "Polestar C-1" and "Polestar Automotive." Since the example uses the same company name in the first part and the second part as a description, maybe "Polestar C-1" is the correct name here. But the second point says "Polestar Automotive is a high-performance EV manufacturer..." So perhaps the company name is "Polestar Automotive," and "C-1" is a model or a stock ticker. However, the user's input lists "Polestar C-1" first, so I'll use that as the company name unless there's a reason to think it's a mistake. Maybe the user intended "Polestar Automotive" as the company name, but the first part says "Polestar C-1." To stay true to the input, I'll use "Polestar C-1" as the company name. Putting it all together: "Polestar C-1 surged 12.76% intraday, with the company announcing a planned change in ADS ratio from 1:1 to 1:30, effective by year-end 2025 to boost share price. Polestar Automotive, a high-performance electric vehicle manufacturer targeting the premium market, is the company's primary business." Wait, but the company name in the first part is "Polestar C-1," and the second part refers to "Polestar Automotive." Maybe they are the same entity, so I should clarify. If "Polestar C-1" is a subsidiary or a different entity, but the example uses the same name. The user might have made a typo. Alternatively, maybe "Polestar C-1" is the stock ticker, and the actual company name is "Polestar Automotive." However, the user's instruction says to keep the company name unchanged. The input text has "Polestar C-1盘中 intraday大涨..." and "Polestar Automotive是..." So perhaps the company is "Polestar C-1," and "Polestar Automotive" is part of its description. Therefore, in the headline, use "Polestar C-1" as the company name, then in the description, mention that it's a high-performance EV manufacturer. That way, the company name is kept as per the input. Final check: the percentage is rounded correctly, time period is intraday, the reason is the ADS ratio change, and the company description is included. The example uses "Pineapple Energy Inc." and then the subsidiary name.