Sensei Biotherapeutics shares surge 15.44% intraday as healthcare and biotech sector rallies post-market, despite no new company news.

think> Okay, let's tackle this query. The user wants me to transform a given text into a concise news headline following specific rules. First, I need to parse the input carefully. The company name is "Sensei Biotherapeutics," and the percentage change is 15.43560606%. I need to round this to two decimal places, which would be 15.44%. The time period is intraday. Next, the reason for the price movement. The input mentions two points: the healthcare and biotech sector rallied after hours on December 4, 2025, and the company's Q3 earnings showed a narrowed net loss. The user wants a brief reason, so I should combine these. The key points are the sector-wide rally and the improved earnings. Wait, the first point says the sector rallied after hours, but the stock price movement is during intraday. Maybe the sector's after-hours performance influenced the intraday trading. Also, the company didn't release new news on the day of the rally, so the main reasons are the sector's movement and the previous earnings report. I need to structure the headline to include the company name, percentage, time period, and the reasons. Let me check the example provided. The example includes the company name, percentage, time period, and the reason in the first sentence, followed by additional details. So, the headline should start with "Sensei Biotherapeutics surged 15.44% intraday..." Then mention the sector rally after hours and the reduced Q3 net loss. The user wants the headline in English, so I need to ensure all terms are correctly translated. Wait, the input has "盘中 intraday大涨15.43560606%", which is during intraday trading. The first reason is the sector's after-hours rally, which might have carried over into the next day's trading. The second reason is the Q3财报 showing a smaller loss. I should present both reasons concisely. The example includes the reason in the first sentence, so maybe combine both factors here. Let me check the example again. The example's first sentence includes the reason (SunAtion's project), and the second sentence gives more details. So for this case, the first sentence should state the surge and the reasons: the sector's after-hours rally and the improved earnings. The second sentence can elaborate on the earnings details. I need to make sure the percentage is correctly rounded, the time period is specified, and the company name is unchanged. Also, avoid trailing zeros. The user mentioned to write the article in English, so the entire output should be in English. Putting it all together: Start with the company name, the percentage change, time period, and the reasons. Then a brief explanation of the earnings report. Make sure to mention the sector's movement and the reduced loss. Let me draft it: "Sensei Biotherapeutics surged 15.44% intraday, driven by a post-market rally in the healthcare and biotech sector on December 4, 2025, and a narrowed Q3 net loss of $4.6 million, down from $7.3 million in the prior year. The stock price rose despite no new company announcements on the day of the sector's gains." Wait, the first part mentions the sector rally after hours and the earnings report. The user's input says the sector rallied after hours on Dec 4, which is after the day's trading. But the stock price movement is during intraday trading. Maybe the rally in after hours affected the next day's intraday trading. Also, the earnings report was on Nov 14, so that's a prior event. I need to clarify that the sector's after-hours rally on Dec 4 is a recent event, and the earnings report is from November. The headline should mention both factors influencing the intraday surge. Maybe rephrase: "Sensei Biotherapeutics surged 15.44% intraday, fueled by a post-market sector rally in healthcare and biotech on December 4, 2025, and improved third-quarter results showing a narrowed net loss of $4.6 million, down from $7.3 million year-over-year. The company reported no new news on the day of the sector's gains." That seems to cover both reasons. The key is to include the sector rally and the earnings improvement. The example uses "with the company announcing..." but in this case, the company didn't announce anything new on the day of the rally. So the reasons are the sector movement and the prior earnings report. I think that's all. Let me check the rules again to make sure I didn't miss anything. Company name unchanged? Yes. Percentage rounded? 15.44% correct. Time period is intraday. Brief reason includes sector rally and earnings.