Top 3 altcoins under $1 worth watching: Sei, Ethena, Arbitrum

• Sei eyes further gains as it breaks above $0.31 with a 20% surge in 24 hours.
• Ethena price is above $0.35 and could eye the $1 psychological level amid fresh momentum
• Arbitrum price has reached $0.41 and could explode amid adoption trends.

The cryptocurrency market is in an uptrend, with several altcoins under $1, including Sei, Ethena, and Arbitrum, seeing notable gains in the past 24 hours.

Sei has surged 20% in the last 24 hours, breaking above $0.31, while Ethena has spiked above $0.35. Elsewhere, Arbitrum trades above $0.41.

With these tokens among the top 100 best performers as altcoins gain alongside Bitcoin, are they worth watching?

Here’s a brief overview of each.

Sei (SEI) price poised at $0.31

Sei, a high-performance layer 1 blockchain designed for decentralized finance (DeFi) and high-frequency trading, has recently captured significant attention.

On July 10, 2025, Sei announced a major milestone with the integration of native USDC and Circle’s CCTP V2, positioning it as a trusted financial rail for institutional-scale transactions.

This development, coupled with a 20% price surge in the last 24 hours, underscores Sei’s potential to dominate the DeFi and payment sectors.

As Sei continues to enhance its infrastructure for seamless, near-instant global settlement, it remains a coin worth watching for investors seeking exposure to high-speed blockchain solutions.

The broader crypto market, currently at $3.6 trillion, is experiencing a bull flip. Sei broke above $0.30 and could eye a further upward trajectory.

Bulls will target $1 having already seen the token tap the all-time high of $1.14 in March 2024.

Ethena (ENA) breaks above $0.35

Ethena, a delta-neutral stablecoin protocol based on Ethereum, has seen a notable price increase, surpassing $0.35 as top altcoins rallied alongside Bitcoin.

The ENA token’s uptick in the past 24 hours comes amid listing by Upbit, South Korea’s largest crypto exchange. Upbit announced the listing of ENA trading pairs with KRW, BTC, and USDT, beginning July 11, 2025.

Ethena, which aims to provide a stablecoin solution resilient to market volatility, could see its native token benefit from Upbit’s listing with further adoption and liquidity.

The Ethena Lab’s focus on stability and its integrations across the market means it’s a key player in the stablecoin and DeFi sectors.

Given the crypto market’s recent surge, Ethena’s one of the altcoins to monitor. ENA traded at an all-time high of $1.52 in April 2024.

Arbitrum price breaks $0.41

Arbitrum, an Ethereum layer-two (L2) scaling solution, has demonstrated strong performance. ARB price has reached $0.41 and looks bullish.

Known for improving Ethereum’s speed, scalability, and cost-efficiency through optimistic rollups, Arbitrum is well-positioned to dominate the smart contract platform sector.

Its native token, ARB, is used for governance within the Arbitrum DAO, further solidifying its role in decentralized applications (dApps).

A 15% increase in Arbitrum’s price over the last 24 hours and 26% in the past week, aligns with the broader market’s uptick.

If institutional interest in L2 solutions continues to rise, Arbitrum’s potential for further gains makes it a noteworthy altcoin under $1.

The token traded at the ATH of $2.40 in January 2024.