In March 2000, Cisco Briefly Became The World's Most Valuable Company As Its Stock Closed At $80.06. Buyers That Day Waited More Than 25 Years For It To Close Higher.

Key takeaways

• At the close on Monday, March 27, 2000, the Associated Press reported, Cisco had a market value of $555.5 billion on basic shares.
• From the March 27, 2000 close to the Oct. 11, 2002 close, the shares fell 87.11%.
• Matt Phillips reported that Cisco finally set a new closing high on Dec. 10, 2025, and Bloomberg via Insider Monkey put the stock at $80.25 that day.