CoinEx News: Arbitrum's ARB last traded at $0.114 on CoinEx on September 1, 2026, up about 35% from the $0.085 open, after a $0.120 high and a $0.085 low. No new official Arbitrum release hit the tape. The nearest dated catalyst is Robinhood Chain, the Ethereum Layer 2 built with Arbitrum's Orbit toolkit — software that lets a firm run its own chain on Arbitrum tech. DefiLlama figures published August 31 showed about $1.33 billion in rolling 24-hour decentralized exchange volume on that chain, above Ethereum, BNB Chain and Base, and behind only Solana. Seven-day volume was about $6.16 billion, up roughly 79% from a week earlier.