5 Best Performing S&P 500 Stocks So Far in 2026

In this article, we will list the 5 Best Performing S&P 500 Stocks So Far in 2026. Please visit 10 Best Performing S&P 500 Stocks So Far in 2026 to see the extended list and the methodology behind it.

5. ON Semiconductor Corporation (NASDAQ:ON)

Year-to-Date Performance: 80.19%

ON Semiconductor Corporation (NASDAQ:ON) is one of the best performing S&P 500 stocks so far in 2026. On April 27, ON Semiconductor and NIO expanded their collaboration to facilitate the automaker’s transition to next-gen 900V EV platforms. By integrating ON Semiconductor’s latest EliteSiC M3e technology, the partnership aims to enhance the efficiency and performance of NIO’s upcoming EV lineup.

This high-voltage architecture is designed to provide drivers with faster charging times, extended range, and more consistent power delivery, even under high-load conditions or at highway speeds. The collaboration represents a significant evolution from their previous work on 400V systems to a deep, system-level alignment. Key to this transition is Onsemi’s M3e technology, which reduces energy losses and improves thermal management within the drivetrain.

These technical advancements are already being implemented in NIO’s flagship models, such as the ES9 SUV, and several other vehicles debuting at the 2026 Beijing Auto Show. Beyond technical specs, the agreement reflects a broader industry trend toward closer integration between semiconductor manufacturers and automakers. By aligning their technology roadmaps, ON Semiconductor Corporation (NASDAQ:ON) and NIO are reducing development complexity and accelerating the time-to-market for high-performance electric drive systems.

ON Semiconductor Corporation (NASDAQ:ON), founded in 1999 and headquartered in Scottsdale, Arizona, delivers intelligent power and sensing solutions, serving automotive and industrial markets.