Lumentum to join the S&P 500 on March 23, moving up from the MidCap 400

S&P Dow Jones Indices said Lumentum would be added to the S&P 500 before the market opened on Monday, March 23, 2026, moving from the S&P MidCap 400. Lumentum announced the change on March 10 and tied it to its growth and higher market value. Index inclusion typically brings passive buying and higher trading liquidity, which is why traders watch these moves closely.

• Effective before the market opens on Monday, March 23, 2026.
• Moves from the S&P MidCap 400 to the S&P 500; ticker LITE on Nasdaq.
• Company cites growth and higher market value; expects added liquidity and visibility.