ARB doubles as Robinhood Chain volume records drive UNI and ARB gains
Arbitrum (ARB)
Editor:
Eugene Serbin
bitcoinethereumnews.com reports that Arbitrum’s ARB token more than doubled in a week, rising 107.4% to levels not seen since early January. This surge accompanies Uniswap’s UNI, which climbed 39.1%, driven by Robinhood Chain’s emergence as the top fee-generating network with over $40 billion in cumulative DEX volume. Daily chain revenue now exceeds $4 million, outpacing Hyperliquid, Ethereum, BNB chain, and Base.
Uniswap dominates trading on the network, earning 0.465% per dollar traded compared to 0.214% elsewhere, largely due to tokenized stocks in higher fee tiers. The UNIfication upgrade now burns UNI using these fees, creating a direct loop where more Robinhood users generate more burns. Meanwhile, Robinhood Chain uses Arbitrum technology and sends 10% of net protocol revenue to the Arbitrum Expansion Program.
This arrangement directed roughly $1.32 million to the Arbitrum DAO treasury and developer guild over 30 days. Despite this, Uniswap extracted $78.73 million in trading fees from the same chain during that period. The concentration of revenue on a single network controlled by a publicly listed brokerage introduces new counterparty risk for Uniswap.
How the market reacted
Whalio's own Binance spot order flow for ARB, measured when this story was written up on 7 September 2026. Not the outlet's figures.
Whalio spot data for ARB shows a price of $0.1893 with a 1-hour buy ratio of 57.5% and a 4-hour buy ratio of 58.5%. These short-term figures exceed the 24-hour buy ratio of 51.6%, indicating that buying pressure is intensifying in the immediate term. Volume deltas are positive across all timeframes, with the 1-hour delta at +$815,996 and the 4-hour delta at +$3,644,895. This volume delta measures the net difference between buy and sell volume, showing that buyers are actively absorbing supply. The 24-hour cumulative volume delta (CVD) stands at +$6,502,126, confirming sustained net inflows over the day. Spot volume reached $100,159,978 with 716,295 trades, reflecting high market participation.
The latest daily buy ratio of 46.4% sits at the 8th percentile of the last 324 days, against a median of 49.6% - among the weakest buying days it has had.
Was that an ordinary day?
The same Binance spot measurements for ARB, averaged over the days leading up to the story.
Over the preceding week, ARB experienced a 124.6% price increase, significantly outpacing the current 24-hour activity. The 7-day average buy ratio was 50.1%, meaning today’s 24-hour ratio of 51.6% is only slightly above the weekly norm. However, the 24-hour spot volume of $100,159,978 is 2.71 times the weekly average, marking this as an unusually active trading day. While the buy ratio remains near average, the volume surge suggests strong conviction behind the recent price action. This volume spike occurred across 4 of 7 days with net buying, highlighting a consistent but not universal bullish trend leading up to this moment.