<div id="readability-page-1">Money Markets What’s Behind The 30% Surge In UNH Stock?  ByTrefis Team ,  Contributor.  Forbes contributors publish independent expert analyses and insights. Building a platform to do the job of 1 million analysts for  Great Speculations Follow Author Oct 23, 2025, 09:19am EDT Share Save Comment  CANADA - 2025/10/01: In this photo illustration, the UnitedHealth Group (United Health) logo is seen displayed on a smartphone screen. (Photo Illustration by Thomas Fuller/SOPA Images/LightRocket via Getty Images) SOPA Images/LightRocket via Getty Images UnitedHealth (UNH) ’s stock jumped 31% in three months, driven not only by a slight increase in revenue and a high P/E multiple, but also amid mixed signals: a Q2 earnings miss, regulatory scrutiny, and renewed investments in AI. What’s behind this volatility?  Let’s explore the factors that led to the rise.  UNH 3M Returns Trefis So what is taking place here? The stock increased by 31%, boosted by a 3.1% rise in revenue and a 35% increase in P/E multiple, despite a 6.6% decrease in net margin. Let’s analyze the events leading to these changes.  Before we delve into strong that contributed to the stock’s rise, here’s what strong suggests: Investing in a single stock can be risky, but there is substantial merit in adopting a more diversified strategy, such as the one we propose with the High Quality Portfolio. It has comfortably outperformed its benchmark—a combination of the S&amp;P 500, Russell, and S&amp;P MidCap indexes—and has achieved returns exceeding 105% since its inception. Why is that? As a group, HQ Portfolio stocks provided better returns with less risk versus the benchmark index; less of a roller-coaster ride, as evident in HQ Portfolio performance metrics.  Here’s What Has Happened With UNH Stock Lately Q2 Earnings Miss &amp; Outlook: UnitedHealth’s Q2 2025 adjusted EPS of $4.08 fell short of expectations; the 2025 EPS forecast was adjusted down to at least $16.00.  Regulatory Investigations: The Department of Justice is investigating Medicare billing practices, while senators look into nursing home operations.  Quarterly Dividend Paid: A quarterly dividend of $2.21 per share was distributed on September 23, 2025, enhancing investor confidence.  AI Investment: The launch of Optum Real, an AI system to optimize claims processing, aims for cost savings and new revenue streams.  Warren Buffett Stake: Warren Buffett’s Berkshire Hathaway acquired a new stake of over 5 million shares in UNH stock during the second quarter of 2025, a move valued at approximately $1.6 billion at the time, boosting investor confidence.  Our Current Assessment Of UNH Stock MORE FOR YOU Opinion: We currently view UNH stock as appealing. Why is that? Take a look at the complete overview. Read Buy or Sell UNH Stock to understand what informs our current viewpoint.  Risk: When evaluating the risk associated with UNH, it’s enlightening to review its declines during major market downturns. The stock plummeted approximately 42% during the Dot-Com crash and over 72% in the Global Financial Crisis. Even the 2018 correction and the COVID-19 pandemic resulted in declines exceeding 20% and 35%, respectively. The inflation shock was less severe, yet it still saw a near 18% drop. See – How Low Can UNH Stock Really Go – for more details. Solid fundamentals at UNH do not shield it from substantial sell-offs when broader market decreases occur. Risk is pervasive, regardless of the company's status.  Consistently selecting winners is quite challenging - particularly given the volatility tied to a single stock. Consider the Trefis Reinforced Value (RV) Portfolio, which has outperformed its all-cap stocks benchmark (combination of the S&amp;P 500, S&amp;P mid-cap, and Russell 2000 benchmark indices) to produce strong returns for investors. Why is that? The quarterly rebalanced mix of large-, mid-, and small-cap RV Portfolio stocks provided a responsive way to make the most of upbeat market conditions while limiting losses when markets head south, as detailed instrong RV Portfolio performance metrics .  Editorial Standards Reprints &amp; Permissions LOADING VIDEO PLAYER... FORBES’ FEATURED Video</div>

联合健康

<p>联合健康集团（UnitedHealth Group，股票代码：UNH）的股价在三个月内飙升了 31%，这得益于 3.1% 的收入增长和 35% 的市盈率上升，尽管净利润率下降了 6.6%。影响这一波动的因素包括第二季度业绩不及预期、监管审查以及在人工智能方面的重大投资。值得注意的是，沃伦·巴菲特的伯克希尔·哈撒韦公司收购了超过 500 万股，增强了投资者信心。尽管该股票显示出稳健的基本面，但在过去的市场下跌中经历了显著的下滑，突显了投资个股的固有风险</p>

联合健康股票上涨 30% 的原因是什么？