Arbitrum processed 478 million transactions in the first half of 2026, bringing its lifetime total to 2.7 billion, according to the Arbitrum Foundation's Bi-Annual Progress Update published in early September. The network's ecosystem generated $206 million in gross domestic product over the period, with cumulative ecosystem GDP reaching $1.7 billion since launch.
ArbitrumDAO accrued $6.19 million in income across four revenue lines during the half-year, with the protocol achieving a gross margin exceeding 97 percent on that revenue. The Arbitrum Expansion Program, which licenses chains built on Arbitrum's technology, generated 35 percent of DAO income in July alone, the first full month with Robinhood Chain operating on mainnet.
Monthly stablecoin transfer volume on Arbitrum exceeded $70 billion on average during the period. The network ranked first among blockchain ecosystems by number of tokenized real-world asset deployments, a metric the Foundation highlighted in its progress report.
Robinhood, the retail brokerage, launched Robinhood Chain on Arbitrum as its native blockchain, marking the first major consumer brand to deploy on the Expansion Program framework. The Expansion Program generates recurring fees from operators, creating a new income stream separate from protocol fees.
Arbitrum One remains the leading Arbitrum chain by transaction volume. The network's transaction growth, 478 million in six months, implies an annualized run rate of 956 million transactions if the pace holds. The $206 million ecosystem GDP figure measures value generated by applications and services running on the network, including decentralized finance, gaming, and real-world asset tokenization projects.
The gross margin above 97 percent on DAO revenue indicates minimal operational costs relative to income generation. Arbitrum Foundation's operational budget consumes a small fraction of the protocol's income, leaving capital available for ecosystem development, grants, or treasury accumulation.
The Expansion Program's 35 percent share of July income came after a single operator went live. As more chains launch under the program, whether the licensing model can sustain the network's financial independence and growth funding at scale depends on the rate at which new operators join and the fees they generate.
