Citadel Securities, an electronic trading firm that works with Robinhood and others, raises $1.15B from Sequoia Capital and Paradigm, valuing it at ~$22B (Wall Street Journal)

Wall Street Journal:
Citadel Securities, an electronic trading firm that works with Robinhood and others, raises $1.15B from Sequoia Capital and Paradigm, valuing it at ~$22B  —  Sequoia Capital's and Paradigm's $1.15 billion investment values the electronic-trading firm at around $22 billion

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