Lumentum Holdings shares surge 5.09% premarket after being added to S&P 500 Equal Weighted index.

Lumentum Holdings Inc. (LITE) rose 5.09% in premarket trading following its addition to the S&P 500 Equal Weighted index, as announced by S&P Capital IQ on March 22, 2026. The inclusion in a major benchmark index typically enhances institutional demand and liquidity, signaling increased market recognition of the company’s size and sector relevance. While the stock was simultaneously removed from the S&P 400 Information Technology index, the broader positive sentiment from S&P 500 inclusion appears to have driven the upward movement. A separate Bitget article referencing a potential short opportunity did not directly influence the premarket action. The stock’s strong six-month performance (308.64% return) may have also reinforced investor confidence, but the immediate catalyst was the index addition.