- Arbitrum price jumped 21% amid speculation of a potential Robinhood partnership.
- On-chain activity rose, including a 25% increase in active addresses, suggesting possible further upside.
- Technical indicators point to a short-term rally toward $1, with key supports at $0.30 and $0.26.
Arbitrum (ARB), a leading Ethereum scaling solution, saw its native token surge more than 21% in the past 24 hours, rising from $0.30 to nearly $0.39.
The altcoin’s sharp move higher occurred amid heightened optimism among bulls, fueled by speculation about a potential partnership with Robinhood.
Buyers were also aided by broader bullish momentum across crypto markets, with Bitcoin testing $108k again and Ethereum pushing above $2,500.
Why did Arbitrum jump 21% in the last 24 hours?
On-chain analysis from Lookonchain indicates that ARB’s double-digit gains over the past day reflect growing market optimism tied to rumors of a Robinhood–Arbitrum collaboration.
2/ The rally in $ARB was fueled by speculation that Robinhood might partner with Arbitrum to build a blockchain platform enabling European investors to trade U.S. stocks. pic.twitter.com/P8TKREAXA2
— Lookonchain (@lookonchain) June 30, 2025
Speculation accelerated late on June 29, 2025, after Robinhood posted an announcement to its X account highlighting a fireside chat in Cannes on June 30 at 19:45 CEST featuring Ethereum co-founder Vitalik Buterin, Robinhood crypto GM Johann Kerbrat, and the CSO of Offchain Labs.
Robinhood said it would stream the discussion on its X and YouTube channels.
So how does that relate to ARB’s price?
Rumors intensified after early reports suggested Robinhood might partner with Arbitrum to build a blockchain platform aimed at European investors. The proposed service would allow EU customers to trade U.S. stocks, a use case observers say could increase Arbitrum’s utility.
On-chain metrics from DeFiLlama indicated a roughly 25% increase in active addresses, which climbed to more than 418,400 over the last 24 hours.
Arbitrum price outlook: What supports further gains?
During Arbitrum’s recent rally, ARB tested critical resistance near $0.39 as bullish momentum built.
Supporting the upside case, on-chain data shows increased trading activity from market makers: GSR deposited 9.48 million ARB to Binance over the past week, while Wintermute received 50.1 million ARB from Anchorage Digital custody wallets.
DeFiLlama market data recorded more than $300 million in decentralized exchange (DEX) trading volume on Arbitrum in the past 24 hours, pushing the chain’s cumulative 30-day volume above $17 billion.
DeFiLlama also reported that chain revenues rose about 20% to $2.59 million over the last 24 hours, reflecting stronger network usage.
Meanwhile, Coinglass data shows open interest increased roughly 48% to $266 million, signaling growing derivatives activity and trader engagement.
Technicals suggest additional upside is possible, with some analysts eyeing a short-term move toward $1 if momentum continues. On the downside, key support levels to watch are $0.30 and $0.26, which would be critical to maintain the bullish scenario.