Core Insights - Interactive Brokers Group, Inc. reported strong second-quarter results, with earnings per share of 51 cents, surpassing the analyst consensus estimate of 45 cents [1] - The company's quarterly revenue reached $1.48 billion, exceeding the Street estimate of $1.36 billion and showing an increase from $1.23 billion in the same period last year [1] Financial Performance - Commission revenue rose by 27% to $516 million, driven by higher customer trading volumes [4] - Customer trading volumes increased significantly, with stocks up 31%, options up 24%, and futures up 18% [4] - Net interest income grew by 9% to $860 million, attributed to higher average customer credit balances and increased securities lending activity [4] Customer Metrics - The number of customer accounts surged by 32% to 3.87 million [4] - Customer equity increased by 34% to $664.6 billion [4] - Total Daily Average Revenue Trades (DARTs) rose by 49% to 3.55 million [4] - Customer credits increased by 34% to $143.7 billion [4] - Customer margin loans grew by 18% to $65.1 billion [4] Stock Performance - Following the earnings release, Interactive Brokers' stock rose by 3.15% to $61.39 in extended trading [3]