In March 2000, tech companies represented 35% of the S&P 500 by market cap. Cisco was briefly the largest company in the world, with a market cap similar to Fa

In March 2000, tech companies represented 35% of the S&P 500 by market cap. Cisco was briefly the largest company in the world, with a market cap similar to Facebook today (taking inflation into account its market cap was similar to Amazon today). https://www.bizjournals.com/sanjose/stories/2000/03/20/story2.html https://www.bizjournals.com/sanjose/stories/2000/03/20/story... These were the ten largest companies in the S&P 500 in January 2000: Microsoft, Cisco, Intel, IBM, AOL, Oracle, Dell, Sun, Qualcomm, and HP.