Interactive Brokers Surges into S&P 500 Despite 91.7% Volume Drop Trading at 192nd Rank

On August 28, 2025, Interactive Brokers (IBKR) traded up 1.60% despite a 91.73% drop in trading volume to $0.51 billion, ranking 192nd in market activity. The firm’s inclusion in the S&P 500, replacing Walgreens, marked a milestone for the long-standing brokerage. Founder Thomas Peterffy highlighted the company’s growth driven by surging options trading and innovative services like “forecast contracts” tied to political and economic events.

Interactive Brokers has seen its stock surge 95% over the past year and 35% in 2025 alone, despite volatility. Peterffy attributed the expansion to a 27% year-over-year increase in daily average trades and a 32% rise in customer accounts, with client equity reaching $665 billion. The firm’s recent quarterly report underscored its focus on professional traders and expanding product offerings, including a 3.83% incentive coupon for forecast contracts.

While Peterffy downplayed the S&P 500 inclusion as a “not remarkable achievement” after 48 years in the industry, the move signals broader institutional recognition. The company’s growth aligns with sustained demand for options trading, a market Peterffy expects to continue expanding. However, the stock’s recent 1.60% gain contrasts with its historically volatile trajectory, which saw it dip below $36 in April before rebounding to $62.

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