OSR Holdings shares surge 15.11% intraday after announcing presentation at Emerging Growth Conference to showcase healthcare platforms and growth strategies.

think> Okay, let's tackle this query step by step. The user wants me to act as a financial analyst explaining a stock price movement linked to recent news. The stock in question is OSR Holdings (OSRH), which had a 15.11% intraday increase. I need to look at the provided news events and determine which ones are relevant to this movement. First, I'll check the trading period: it's intraday, so the price movement happened during regular trading hours. The user provided several news items. Let me go through each one. Looking at Reason 1: OSR is presenting at the Emerging Growth Conference. The presentation is scheduled for December 10, 2025. The summary mentions an overview of their healthcare platforms and growth initiatives. This could be positive, but the timing is in the future. However, if the market is reacting to the announcement of the presentation itself, maybe that's a catalyst. But the date is after the current date (assuming today is when the stock moved), so maybe the announcement of the presentation is recent news. Reason 2 has multiple news items. Let's see the dates. The latest news is from November 21, 2025, about Vaximm entering a term sheet with BCM Europe for a licensing deal with upfront and milestone payments. The Rhea-AI impact here was 23.38%, which is a significant positive. However, the end-of-day stock movement for that day was 23.38%, but the current movement is 15.11%, so maybe this news is related. Also, there's a news item from November 14 about appointing Dr. Niethammer as CEO of Vaximm, but that had a negative impact (-8.83%). Another news from November 6 about Woori IO's glucose monitor pilot study showing high accuracy, which had a positive impact (13.98%). The user's stock movement is intraday, so the most recent relevant news would be the one that's closest to the trading period. The Vaximm licensing deal on November 21 could be a key factor. The appointment of Dr. Niethammer might have been a negative, but maybe the market is now reacting to the positive news. Also, the Woori IO acquisition and progress on noninvasive glucose monitoring might contribute. Wait, the stock movement is on the same day as the presentation announcement? The presentation is scheduled for December 10, but the news about the presentation was released on the current day (since the user's input includes the stock performance as "intraday" and the news includes the presentation announcement). If the presentation was announced today, then that's the trigger. But the user's input says the stock performance is intraday, so the movement happened during the day the news was released. Looking at the first reason: the presentation is scheduled for December 10, but the news about the presentation is recent. If the company announced that they will present at the conference, that's positive news. However, the date of the presentation is in the future, but the announcement of the presentation itself is new. This could drive investor interest, leading to a price increase. Another relevant news is the Vaximm licensing deal on November 21 with a $20M upfront and potential $815M milestones. That's a major deal and would likely be seen as positive. The Rhea-AI impact for that news was 23.38%, which is higher than the current 15.11% movement. However, if the stock movement is happening after that news, maybe the market is continuing to react or there's follow-up news. Also, the recent news about the Woori IO pilot study showing high accuracy in November 6 could be contributing. The acquisition of Woori IO was announced in October 14, but the pilot study results in November 6 added positive momentum. But the stock movement is intraday, so the most recent catalyst is likely the announcement of the presentation at the Emerging Growth Conference. The news about the presentation would indicate that the company is gaining visibility and investor confidence, leading to a price increase. Additionally, the Vaximm licensing deal and the Woori IO progress are both positive developments that could be reinforcing the stock's upward trend. However, the immediate trigger for the intraday move is likely the presentation announcement. I need to check if there's any news that directly caused the intraday movement. The presentation announcement is the most recent and relevant. The other news items are older but might have contributed to a positive sentiment. However, the user's instructions say to focus on the key news likely causing the move. Since the presentation announcement is recent and the stock moved intraday, that's the primary cause. So, the concise summary should mention the stock's 15.11% intraday increase.