Bitcoin is the largest cryptocurrency, but altcoins can also be worth adding to your portfolio.
Solana's efficiency makes it a highly used blockchain, with 2.2 billion transactions per week.
Ethereum is going through more frequent upgrades, with plans for two hard forks per year.
Since October, the crypto market has lost about $2 trillion in value. Bear markets are never fun, but if you believe in the long-term value of cryptocurrencies and blockchain technology, then this is a good time to add to your holdings.
I believe Bitcoin is an important part of any crypto portfolio, as it's the most successful coin by far. However, there are also quite a few exciting crypto investment opportunities with altcoins -- a term for all cryptocurrencies other than Bitcoin. Here are my top two picks right now.
Will AI create the world's first trillionaire? Our team just released a report on the one little-known company, called an "Indispensable Monopoly" providing the critical technology Nvidia and Intel both need. Continue »
Image source: Getty Images.
Smart contract blockchains have one of the best bull cases in the crypto space, as they provide the infrastructure needed for decentralized finance (DeFi) services. Stablecoins, tokenized real-world assets (RWAs), and crypto lending protocols all need a blockchain platform to operate.
Solana (CRYPTO: SOL) stands out here because it's significantly more efficient than other leading smart contract blockchains. It processes over 1,000 transactions per second (tps), block times to finalize transactions are less than 13 seconds, and transaction fees are well under $0.01.
Due to its high speed and low costs, Solana processes about 2.2 billion transactions per week, second only to Internet Computer, according to 21Shares. The caveat is that Solana keeps under 10% of the fees generated by these transactions, with most of the value going to the applications built on it.
Solana's limited value capture is a concern, but the activity levels are promising. It has also improved network reliability with the launch of its Firedancer upgrade last December.
Ethereum (CRYPTO: ETH) is the most successful smart contract blockchain, so it fills a similar role as Solana. It has over 1,700 DeFi protocols and about $53 billion of total value locked (TVL) into those protocols, ranking first by a wide margin in both categories. It also holds $165 billion in stablecoins, over half of the stablecoin market.
The biggest downside for Ethereum is that it currently doesn't have the processing capabilities of faster blockchains. It processes about 22 tps, the time to finalize transactions is nearly 13 minutes, and average transaction fees are about $0.10, which all compare poorly to Solana.
However, the Ethereum Foundation recently increased the frequency of network upgrades and is now aiming for two per year. Improving Ethereum's efficiency is one of the priorities.
You might be wondering why Solana and Ethereum are my top picks, considering they're competitors. Both blockchains have their advantages, and I'm not sure which one will be the long-term winner, or if they'll each be successful. With that in mind, I'd rather have both in my portfolio.
Before you buy stock in Solana, consider this:
The Motley Fool Stock Advisor analyst team just identified what they believe are the 10 best stocks for investors to buy now… and Solana wasn’t one of them. The 10 stocks that made the cut could produce monster returns in the coming years.
Consider when Netflix made this list on December 17, 2004... if you invested $1,000 at the time of our recommendation, you’d have $518,530!* Or when Nvidia made this list on April 15, 2005... if you invested $1,000 at the time of our recommendation, you’d have $1,069,165!*
Now, it’s worth noting Stock Advisor’s total average return is 915% — a market-crushing outperformance compared to 183% for the S&P 500. Don't miss the latest top 10 list, available with Stock Advisor, and join an investing community built by individual investors for individual investors.
See the 10 stocks »
*Stock Advisor returns as of April 2, 2026.
Lyle Daly has positions in Bitcoin, Ethereum, and Solana. The Motley Fool has positions in and recommends Bitcoin, Ethereum, and Solana. The Motley Fool recommends Internet Computer. The Motley Fool has a disclosure policy.