AR
Arbitrum
ARB
1 Hour Move
+1.01%
$0.12 → $0.13
Why Arbitrum is up 1.0% in the last hour
Analysis
Arbitrum (ARB) rose about 1.0% over the past hour even as headlines highlighted a major security incident. U.Today reported a “massive $290 million hack” impacting Ethereum and Arbitrum, and the modest uptick suggests the market reaction was limited in the short term rather than a broad selloff.
Contributing Factors (1)
#1
U.Today
Hack/Exploit
1 day ago
Massive $290 Million Hack Hits Ethereum and Arbitrum
One of the largest decentralized finance (DeFi) exploits of 2026 took place on Saturday..
Confidence
68%
Read source
Move Details
Asset
Arbitrum
Symbol
ARB
Direction
↑ Bullish
Timeframe
1 Hour
Start Price
$0.12
End Price
$0.13
Change
+1.01%
Detected
Apr 20, 2026 4:55 AM
Explanation Confidence
68%
Moderate confidence. Multiple factors may be contributing.