Robinhood and Strategy saw their stock prices fall after being overlooked for inclusion in the S&P 500 index, which welcomed Interactive Brokers Group. Robinhood shares ended after-hours trading down 0.5%, closing at $107.40, while Interactive Brokers gained 3.9% to $65.21 following the announcement. Market analysts had anticipated that Robinhood would be included, and Strategy had recently qualified for inclusion due to its rising market cap driven by Bitcoin's value. Inclusion in the S&P 500 is considered advantageous for companies as it attracts passive investors. This decision involves meeting criteria regarding market capitalization, US-based operations, and share liquidity. Strategy also experienced a decline, dropping 4.17% during the day, correlating with a recent dip in Bitcoin. Notably, Jack Dorsey's Block, Inc. was the last crypto-affiliated company to join the S&P 500 in late July 2025.

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