CHINA - 2025/09/04: In this photo illustration, Johnson & Johnson's logo is displayed on the screen of a tablet. (Photo Illustration by Sheldon Cooper/SOPA Images/LightRocket via Getty Images)SOPA Images/LightRocket via Getty ImagesJohnson & Johnson stock (NYSE: JNJ) has delivered a remarkable 24% return in 2025 even as the S&P 500 healthcare index declined 0.2%. This raises an important question: Is this outperformance grounded in durable business fundamentals, or is it a temporary market anomaly? The evid ...