Ironwood Pharmaceuticals shares surge 14.75% intraday after issuing 2026 guidance exceeding estimates and projecting strong sales for Linzess with AbbVie.

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. First, I need to make sure I understand all the requirements. The example provided uses the company name, percentage change rounded to two decimals, time period (premarket, intraday, after-hours), and a brief reason for the price movement. The output is in English, and the company name remains unchanged. Looking at the input text: Ironwood Pharmaceuticals盘中 intraday大涨14.75409836%. The percentage is 14.75409836%, which needs to be rounded to two decimals. Let me check that. 14.75409836 rounded to two decimals is 14.75, right? Because the third decimal is 4, which is less than 5, so we don't round up the second decimal. Wait, no, wait: 14.7540... the third digit is 4, so 14.75 is correct. Wait, no, wait, 14.75409836 is 14.75409836%. The first two decimals are 75, then the third is 4. So when rounding to two decimals, it's 14.75%. Correct. Time period is intraday, so that's straightforward. Now, the reason for the price movement is the two points listed. The first point is the 2026 fiscal year guidance with revenue and EBITDA above expectations. The second point is the core product Linzess and partnership with AbbVie leading to sales projections. The user wants a brief reason, so I need to combine these points concisely. The company name is Ironwood Pharmaceuticals. The output should start with that, followed by the percentage and time period. Then the reason: the 2026 guidance and the sales projections from the core product and partnership. I need to make sure the key info is included: the guidance details (revenue range, adjusted EBITDA over $300M), the partnership with AbbVie for Linzess, and the expected net sales. Also, mention that these factors are driving the performance. Check if the example uses "surged" for a large increase. Since 14.75% is a significant jump, "surged" is appropriate here. The example also includes the subsidiary's action, but in this case, it's the company's own guidance and product sales. So the structure would be: Company name + surged + percentage + time period + reason (guidance and sales projections). Putting it all together: "Ironwood Pharmaceuticals surged 14.75% intraday, driven by the release of its 2026 fiscal year guidance, which includes projected total revenue of $450 million to $475 million and adjusted EBITDA exceeding $300 million, surpassing market expectations. The company also anticipates U.S. net sales of its core product Linzess, in partnership with AbbVie, to reach $1.125 billion to $1.175 billion in 2026, driving growth." Wait, the original input mentions "2026年1月2日发布2026财年业绩指引", which is the date of January 2, 2026, but the guidance is for the 2026 fiscal year. The user might not need the specific date unless it's crucial. Since the example doesn't include dates, maybe it's okay to omit it. Also, the revenue is in hundreds of millions, so $4.5 billion to $4.75 billion should be written as $4.5 billion to $4.75 billion, not in millions. Wait, the original says "预计总营收4.5亿-4.75亿美元" which is 450 million to 475 million USD? Or is it 4.5 billion? The Chinese number system uses 亿 as 100 million. So 4.5亿 is 450 million. But the example in the user's input for the previous case had 1.95MW, so maybe the numbers here are in USD. Let me confirm: "4.5亿-4.75亿美元" translates to 4.5 billion to 4.75 billion USD. Wait, no: 1亿 is 100 million, so 4.5亿 is 450 million. But the user wrote "4.5亿-4.75亿美元" which is 4.5 billion to 4.75 billion? No, that's incorrect. Wait, 4.5亿 is 4.