Arbitrum’s ARB token rose 23% over 24 hours and 61.6% since Monday, August 31, as Robinhood Chain’s daily fee revenue reached a new all-time high of $4.5 million. The Ethereum Layer 2, operated by Robinhood and built on Arbitrum’s Orbit stack, had previously recorded $3.75 million in fees on September 1, 2026, and surpassed $13 million in cumulative fees within its first two months after launching on July 1. Ten percent of Robinhood Chain’s net protocol revenue is allocated to the Arbitrum ecosystem under the Expansion Program, with the detailed split described as 8% to the Arbitrum DAO treasury and 2% to the Developer Guild, although some reporting refers broadly to the Arbitrum Foundation. The chain’s rapid fee growth, alongside $1.5 billion in daily decentralized-exchange volume and more than $750 million in total value locked, was cited as a driver of ARB’s rally. ARB’s market capitalization reached $904 million, exceeding $900 million for the first time since January, while open interest, the value of outstanding derivatives contracts, rose 30% and funding rates turned positive. Technical indicators remained bullish but showed possible short-term overheating, with daily RSI at 80.05 and the Stochastic RSI approaching a bearish crossover.