Interactive Brokers Client Equity Nears $1 Trillion in August Despite DARTs Slip

Interactive Brokers Group reported continued growth across its brokerage business in August, with client equity approaching $1 trillion and client accounts reaching 5.46 million. The Nasdaq-listed electronic broker recorded 4.28 million daily average revenue trades during the month, 23% higher than August 2025 but 3% lower than July. The monthly decline followed a sharper drop in July, when DARTs fell 16% from June to 4.43 million.

Client equity stood at $962.8 billion at the end of August, up 35% year-on-year and 6% from July, representing an increase of $56.1 billion. Client margin loan balances rose to $101.5 billion, 41% higher than a year earlier and 1% above July. Client credit balances reached $185.6 billion, up 27% year-on-year and 3% month-over-month. The broker added about 143,000 accounts during the month, bringing the total to 5.460 million, a 35% increase from August 2025. Overall, client and asset growth remained strong even as trading activity eased from July.

Beyond its monthly metrics, Interactive Brokers partnered with South Korea's DAOL Investment & Securities to provide local investors access to global stocks through DAOL Fi PRO. The broker also experienced a temporary access issue during US trading hours recently, affecting a small number of clients in certain APAC data centres, with access restored within an hour.