Super Micro and Deckers Outdoor Corp will join the S&P 500 before the market opens on Monday March 18, having met the conditions for the quarterly rebalancing of Wall Street's most closely watched stock index. The two companies will take the place of Whirlpool Corp and Zions Bancorporation, according to S&P Dow Jones Indices. Index funds that replicate the S&P 500 are among Wall Street's most popular investment tools. ETFs will need to acquire shares in Super Micro and Deckers to stay in line with the composition of the benchmark index. S&P 500 index funds are worth around $7,800 billion.

Super Micro markets high-end servers equipped with Nvidia's most powerful AI processors. The stock has more than tripled this year, bringing its market capitalization to over $50 billion. The company's entry into the S&P500 is not surprising, given this rapid growth.

On Friday, Super Micro Computer traded for $10 billion, surpassing the trading volumes of Wall Street heavyweights such as Microsoft and Amazon. This surge in after-hours trading comes on top of a 4.5% rise in Friday's session. Deckers shares rose 2.7% post-close, while Whirlpool lost 1.7% and Zions Bancorporation fell 2%.

In Japan, news from the Nikkei 225

The Nikkei also announced changes to Japan's flagship Nikkei 225 index, with Zozo, Disco and Socionext replacing Takara, Sumitomo Osaka Cement and Pacific Metals on April 1.

In the UK, EasyJet is set to replace Endeavour Mining in the FTSE100 on March 18. The mining group will be demoted to the FTSE 250, where Kier and Wincanton will be promoted. FDM Group and Tullow Oil will leave the FTSE 250.

Euronext Paris will have to wait until March 7.