Jack Dorsey, CEO of Twitter and Square, attends Bitcoin 2021 conference in Miami. Square’s shares surge over 10% in after-hours trading as the fintech company prepares to join the S&P 500, replacing Hess. The Trade Desk also joins the index, replacing Ansys acquired by Synopsys. Chevron’s acquisition of Hess precedes the change.

S&P 500 undergoes changes with Square and The Trade Desk joining the index. Datadog replaced Juniper Networks last week in the quarterly rebalancing. Block’s addition to the S&P 500 brings more tech influence to the index, reflecting market cap gains in the sector. Block, formerly Square, expands into crypto and financial services.

Read more at CNBC: Block shares soar 10% on entry into S&P 500