 
    The healthcare sector is pivotal in the global economy, involving companies that offer medical services, manufacture medical equipment or drugs, provide medical insurance, or facilitate the provision of healthcare. This analysis reviews recent performance of major stocks over the past week, month, and quarter. Close attention is given to identifying significant trends and outliers within the sector, providing insights for potential investments.
The one-week performance in the healthcare sector shows a remarkable surge, with Thermo Fisher Scientific (TMO) leading the advances with a substantial gain of 14.84%. Conversely, Intuitive Surgical (ISRG) shows significant underperformance with a decline of 4.42%. Overall, the week reflects a positive sentiment in the sector with notable gains across multiple holdings.
| Stock | Performance (%) | Performance | 
|---|---|---|
| TMO | 14.84% | |
| MRK | 5.85% | |
| LLY | 5.25% | |
| AMGN | 3.99% | |
| JNJ | 2.80% | |
| ABT | 2.31% | |
| ABBV | 0.59% | |
| UNH | -0.40% | |
| ISRG | -4.42% | 
 
Over the one-month period, Thermo Fisher Scientific (TMO) again leads with an impressive 16.67% gain, indicating strong market confidence. Johnson & Johnson (JNJ) and Amgen (AMGN) also delivered robust returns. On the bearish side, UnitedHealth Group (UNH) saw the steepest decline at 8.95%.
| Stock | Performance (%) | Performance | 
|---|---|---|
| TMO | 16.67% | |
| AMGN | 10.37% | |
| JNJ | 10.17% | |
| MRK | 7.13% | |
| LLY | 4.96% | |
| ABBV | 4.50% | |
| ABT | -5.53% | |
| ISRG | -7.17% | |
| UNH | -8.95% | 
 
Over the last three months, Thermo Fisher Scientific (TMO) continues to show strong performance with a 14.40% increase. Amgen (AMGN) and Johnson & Johnson (JNJ) also achieved significant gains. The most noteworthy decline was observed in UnitedHealth Group (UNH), which fell by 36.09%, indicating potential underlying challenges.
| Stock | Performance (%) | Performance | 
|---|---|---|
| TMO | 14.40% | |
| AMGN | 9.00% | |
| JNJ | 8.48% | |
| MRK | 2.93% | |
| ABBV | -0.30% | |
| ABT | -1.54% | |
| ISRG | -2.99% | |
| LLY | -5.68% | |
| UNH | -36.09% | 
 
The healthcare sector has demonstrated both impressive growth and some notable declines. Thermo Fisher Scientific (TMO) consistently emerged as a top performer across all analyzed periods, suggesting robust company fundamentals and positive market outlook. However, the substantial decline in UnitedHealth Group (UNH) over three months indicates potential issues that need closer examination. Investors should maintain a balanced perspective, leveraging strengths while staying vigilant of looming risks.