Best altcoins to watch in June 2026

As May fades into the rearview mirror, the month witnessed Bitcoin’s (BTC) rally towards a three-month high of $82,000. However, inflation concerns, increased expectations of a rate hike and copious amounts of ETF outflows dampened the rally and BTC slipped below $80,000.

Nevertheless, the market is still in a strong Bitcoin-led phase, even as pockets of altcoin strength emerge. The Altcoin Season Index has hovered in the mid-30s to high-30s range; only a minority of top altcoins have outperformed BTC over the past 90 days, far below the threshold associated with a full ‘altseason’.

XRP and Solana-linked products recently attracted inflows in the face of BTC’s weekly outflows, suggesting investors are becoming more selective rather than abandoning crypto exposure altogether.

June also brings a major policy catalyst. The CLARITY Act has moved back into focus after updated Senate text was released in May, with prediction markets recently lifting the odds of passage in 2026. If enacted, the bill could help define how digital assets are classified in US markets.

In light of that, June’s watchlist focuses on altcoins in tokenized assets, regulated derivatives access, staking economics, oracle infrastructure and privacy technology.

1. Zcash (ZEC)

What set Zcash apart is that it re-entered the conversation through quantum-readiness and staking-transition narratives rather than meme speculations.

The network’s planned transition toward the Crosslink upgrade and hybrid Proof of Stake model continues to reshape the Zcash thesis. It introduces native staking while reducing dependence on miner issuance, a long-standing source of sell pressure for ZEC.

Instead of focusing solely on anonymity, market participants are increasingly framing Zcash around censorship resistance and post-quantum transaction security, particularly as surveillance concerns and quantum-computing discussions gain visibility across the broader tech sector.

The June outlook

ZEC is still price-sensitive despite its strong repricing in April and May. In May alone, ZEC surpassed both the $400 and $500 levels. After a sharp 30-day increase of above 70%, ZEC is consolidating in the low-$600s at the time of writing. 

Traders are watching whether the asset can consolidate above prior breakout levels while maintaining elevated shielded transaction activity.

For June, the near-term support zone can be found around the $600 to $620 area, whereas on the upside, the $660 to $690 region serves as the more relevant resistance band, based on recent spot trading ranges. 

2. Ondo Finance (ONDO)

The rapid growth of the Real-World Asset (RWA) sector has led Ondo Finance to enter June as one of the stronger performers among major altcoins.

At the time of writing, ONDO gained nearly 59% over the past 30 days and more than 50% over the past 90 days, while maintaining a total value locked (TVL) of roughly $3.76 billion — notably high relative to its approximately $2 billion market capitalization.

The protocol remains tightly linked to one of crypto’s dominant institutional narratives in 2026 thus far: bringing Treasury products, equities and yield-bearing assets on-chain. However, its near-term outlook took an unexpected turn as the team and community wrestle with the sudden demise of their CEO.

The June outlook

The key question for June is whether ONDO’s valuation expansion continues to outpace underlying user growth and cashflow adoption. After rallying about 60% through May, ONDO climbed through the mid-$0.30 region and briefly tested levels near $0.45 as tokenized real-world asset narratives continued attracting capital.

ONDO has since entered a consolidation phase around the low-$0.40s, with traders watching whether the token can maintain support above the $0.40 to $0.42 area.

The immediate resistance sits near the recent highs around $0.45, followed by the broader $0.50 psychological level if tokenized-equity momentum and RWA inflows continue strengthening through June.

3. Sui (SUI)

SUI outperformed many competing smart-contract networks over both the 30-day and 90-day windows.

The biggest June event to note is June 3, when roughly 30.45 million SUI tokens are to be unlocked; it’ll pose a real-time test of market absorption during a fragile macro backdrop.

June also marks the first full month of trading after the launch of CME SUI futures, giving traders an early look at how regulated derivatives markets may affect liquidity and volatility dynamics around the asset.

Beyond trading flows, SUI continues to post relatively strong network activity metrics, including approximately 373,000 weekly active addresses and staking participation levels that remain elevated by industry standards.

The June outlook

After outperforming several major Layer-1 peers earlier in Q2, SUI reclaimed the $1 level during May and continued stabilizing above prior breakout zones heading into June.

Sui is facing the prospect of a supply glut with its scheduled June 3 unlock of roughly 30.45 million SUI. It remains to be seen if the market can sufficiently absorb the influx and avoid disrupting the recent momentum. The token consolidated around the low-$1 region in recent sessions following its May recovery.

For June, the first major support zone sits around the $1.00 level, while the $1.10 to $1.15 region has emerged as the next resistance cluster after several recent rejection attempts. 

4. Chainlink (LINK)

Chainlink continues to occupy a unique position in crypto markets as a core ‘on-chain middleware’.

Public metrics currently place Chainlink’s footprint at roughly $33.1 billion in total value secured across more than 505 protocols, reinforcing its role as one of the top Layer-1s underpinning tokenized finance.

Meanwhile, Staking v0.2 remains open for general access with variable rewards near 4.3%, extending LINK’s long-running effort to align network security with token utility.

Unlike some other altcoins on this list, LINK won’t be entering June with a hard-dated protocol upgrade. Chainlink remains tied to the broader expansion of tokenized assets, CCIP adoption and oracle monetization.

The June outlook

LINK’s performance in June may depend on whether the tokenization momentum sustains.

Price-wise, LINK demonstrated relative resilience through May compared with several large-cap altcoins, defending support around the low-$9 region even as broader market volatility intensified. The token spent much of the month consolidating below the psychologically important $10 level.

For June, the $9.00 to $9.20 area remains the key support zone, particularly if macro conditions remain unstable. Resistance is clustered around $10.00, followed by the $10.50 to $11.00 range if momentum around CCIP adoption, tokenized assets and staking participation continues building.

5. Avalanche (AVAX)

Avalanche appears to be in a transitional phase as institutional market structure developments interact with its broader subnet and infrastructure strategy.

A noteworthy recent development is the launch of CME AVAX futures alongside CME’s move toward 24/7 crypto trading. June will effectively become the first clean month for traders to evaluate whether expanded regulated derivatives access improves liquidity and institutional participation around AVAX.

Network metrics remain relatively stable despite softer recent price performance, with public dashboards still showing roughly $1.1 billion in TVL and significant staking participation across circulating supply.

The June outlook

Avalanche’s fee-burn model continues to support its long-term tokenomics, though the market still faces the challenge of converting derivatives accessibility into sustained spot demand.

AVAX spent much of May consolidating around the high-single-digit to low-double-digit range as traders assessed the impact of newly launched CME futures and expanded 24/7 crypto trading access on institutional participation.

Heading into June, the $9.00 region became an important support level after repeated defenses during May’s broader market volatility. Resistance is clustered around $10.00, followed by the $11.00 to $11.50 area if liquidity conditions and Layer-1 sentiment improve.

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