Citadel Securities generated approximately $7.3 billion in trading revenue during the second quarter, setting a historic record for Ken Griffin’s firm. This figure represents nearly 75% of the $9.7 billion in net trading revenue generated throughout all of 2024. The company controls approximately 25% of total US equity trading volume. This exceptional performance was driven by intense individual investor activity and all-time highs in both US equity and options trading volumes. For regulators, these figures are likely to reignite debates about the concentration of order flow among a small number of market makers.
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