Top Altcoins to Buy Today, October 21 – Ethereum, Zcash, Solana

Highlights:

• Ethereum, Zcash, and Solana stand out as the top altcoins to buy today, showing renewed strength despite market drops.
• Zcash’s sharp rebound and bullish “Adam and Eve” setup point toward strong upside momentum if $270 breaks.
• Solana’s triangle pattern hints at a breakout, with traders eyeing $237 as the next resistance target.

The crypto market continues to experience volatility, with Bitcoin dropping below the $110k mark, impacting the overall market. This broad downturn has seen the global market capitalization drop by 3.50% to $3.66 trillion, while the 24-hour trading volume stands at $160 billion. The fear and greed index has also dropped to 33 levels, indicating a fear sentiment in the market. Amidst this negative trend, let’s take a look at the top altcoins to buy today, such as Ethereum, Zcash, and Solana.

Top Altcoins to Buy Today

1. Ethereum (ETH)

The largest altcoin, Ethereum, is down 4% over the last 24 hours to trade around $3,894. The latest bearish trend has seen the weekly and monthly declines surge to 5% and 13%, respectively. In addition, its market capitalization and trading volume have dropped to $470 billion and $37 billion, respectively.

Ethereum is gaining momentum following recent market fluctuations. Ali Martinez, an analyst, shared a chart that indicates that ETH could climb to $4,440. The analysis shows recurrence of rebounds on major trend lines, and this indicates increasing bullishness. Although there have been previous pullbacks, the market seems to play in favor of another upward move.

Next stop for Ethereum $ETH: $4,440. https://t.co/yPcXQU8KQw pic.twitter.com/kk99LNbvcz

— Ali (@ali_charts) October 20, 2025

Meanwhile, the institutions continue to purchase the dip. BitMine Immersion Technologies confirmed that it purchased approximately 203,800 ETH earlier this week. This gradual increase contributes to the strength of Ethereum and positions it among the top altcoins to buy today based on the current market position and sentiment.

2. Zcash (ZEC)

Zcash has been making headlines recently, with the price surging by almost 400% over the past 30 days. Despite the broad market downturn today, ZEC displays a positive outlook with a gain of 7% to trade at $255. Moreover, its trading volume has surged by 30% to $670 million.

Crypto analyst Ardi has pointed to positive accumulation indicators on Zcash’s hourly chart. The shape has a reversing V-shape and then a rounded bottom, forming an Adam and Eve-like formation. Such a setup indicates that traders could be observing a possible bullish reversal taking shape.

$ZEC showing very strong signs of accumulation.

Chart has similarities to an Adam and Eve reversal. The V-reversal (Adam) is slightly above the rounding bottom, so it's deviated from a textbook Adam & Eve, but the psychology remains the same; a panic flush followed by gradual… pic.twitter.com/xYSyFMw3RR

— Ardi (@AltcoinArdi) October 21, 2025

The neckline is around $270, and an actual breakout may hint at a target of $360. However, dropping below $250 would nullify this setup. Investors should now position Zcash among the best altcoins to buy today, provided that it maintains strength above key resistance points.

3. Solana (SOL)

Solana’s price has been trading on a descending channel recently, with the price dropping from highs of $240 to $170. The altcoin has dropped by over 20% and 6% on the weekly and monthly charts following the volatility noted in the market over the past weeks. As of this writing, the price is resting around $184 with a market cap of $100 billion.

Solana is on the verge of breaking out after trading within a symmetrical triangle. Analyst NekoZ pointed out that the current formation indicates a major move in the near future. SOL is currently trading on the chart around $184.80, squeezed between the support and resistance levels at 168.79 and 237.79, respectively.

$SOL is gearing up for a major move!

We've been consolidating in a tight symmetrical triangle pattern. The breakout is imminent.

A strong move above the upper trendline could send us toward the resistance at $237.79. Keep an eye on the support at $168.79 if the market shifts. pic.twitter.com/4BErfCv0WK

— NekoZ (@NekozTek) October 21, 2025

Breaking out of the triangle would lead to a rally into the resistance zone. The community has backed this sentiment, with 85% of the voting being bullish in sentiment polls. Solana, therefore, remains a focus on the list of the top altcoins to buy today.