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Bitcoin and ethereum prices today, Tuesday, August 18, 2026: Crypto prices mixed as Iran stalemate continues
Bitcoin (BTC-USD) opened at $64,487.65 on Tuesday, August 18, 2026, 2.7% higher than Monday’s opening price. As of 9:19 a.m. ET this morning, the price of bitcoin moved down to $64,080.23
Ethereum (ETH-USD) opened at$1,911.89 on Tuesday, August 18, 2026, up 2% from Monday’s opening price. The price of ethereum moved lower this morning to $1,895.37 as of 9:19 a.m. ET.
Bitcoin and ethereum prices fell Tuesday morning as the Middle East conflict continues without an apparent end date. Both cryptocurrencies are down since the war began in late February. Bitcoin has dipped 4.4% and ethereum has fallen 5.7%. For context, the gold futures (GC=F) price has declined far more, 14.7% in the same period.
However, bitcoin and ethereum are in the midst of an extended bear market. Analysts are split on whether the bottom is near or the digital currencies will continue to slide. The Kalshi prediction market has odds on Bitcoin ending the year between $65,000 and $69,999.99. Bitcoin ETFs did show net inflows on Monday after three consecutive days of net outflows
Current price of bitcoin and ethereum
Bitcoin
The price of bitcoin this morning was 2.7% higher than Monday’s opening price. Here’s a look at how the opening bitcoin price has changed versus last week, month, and year:
The all-time high for bitcoin was $128,198.07 on Oct. 6, 2025. The all-time low value for bitcoin was $0.04865 on July 14, 2010.
Ethereum
The price of ethereum this morning was 2% higher than Monday’s open. Here’s a look at how the opening ethereum price has changed versus last week, month, and year:
The all-time high for ethereum was $4,953.73 on Aug. 24, 2025. The all-time low value for ethereum was $0.4209 on Oct. 21, 2015.
Bitcoin, ethereum, and other cryptocurrencies are rapidly evolving.Follow the latest developments from Yahoo Finance and others here.
What is Ethereum and how does it work?
Ethereum is the blockchain, while ether is the cryptocurrency that runs on it. When people say they’re “buying ethereum,” they’re usually buying ETH — the digital asset used to run applications and store value.
Some investors trade short-term, others accumulate their holdings slowly, and still others focus on earning a yield by locking up their ETH to help run the network — a process known as staking.
How to buy Ethereum
Ether, the native cryptocurrency used on the Ethereum platform, remains significantly more volatile than the S&P 500 for many investors. But it’s no longer a moonshot — it’s a foundational piece of a modern digital portfolio.
Here’s how to start investing in ethereum.
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Step 1: Choose your Ethereum investment strategy
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Step 2: Pick the right platform
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Step 3: Complete identity verification (KYC)
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Step 4: Fund your Ethereum purchase
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Step 6: Securing your investment
Learn more:How to buy Ethereum and what to know before you do
Bitcoin and ethereum price charts
Whether you’re brand new to tracking the value of bitcoin and ethereum or a more seasoned crypto investor, Yahoo Finance’s price-of-ethereum chart below shows a visual history of how the currency’s value continues to move and evolve.
(BTC-USD)
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64,818.94+758.58(+1.18%)
As of 4:04:06 PM UTC. Market Open.
(ETH-USD)
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1,915.94+10.53(+0.55%)
As of 4:04:03 PM UTC. Market Open.
More on crypto from the Yahoo Finance team:
Ethereum vs. Bitcoin: Understanding the key differences
Compare Ethereum and Bitcoin. Learn the key differences between BTC and ETH, from origins and supply to consensus mechanisms and real-world use cases.
What is Ethereum? A complete guide to the Ethereum blockchain.
What is Ethereum? Here’s your beginner-friendly guide to the blockchain, smart contracts, DeFi, and how ETH differs from Bitcoin. Learn the basics before you invest.
How to navigate a crypto meltdown: ‘Be willing to hold on’
Financial advisors are reversing course on cryptocurrencies as an investment. So what happens when the next crypto crash occurs?
What is bitcoin, and how does it work?
From how to buy bitcoin to how it works — find out what you should know about bitcoin as a cryptocurrency.
How to buy ethereum — and what to know before you do
Ethereum is becoming a staple in modern digital portfolios. Learn how to choose your investment strategy, pick the right platform, execute the trade, and more.
How to invest in cryptocurrency: A beginner’s guide
Before you place your first trade, it’s important to understand what cryptocurrency is and how it works. Learn how to invest in crypto in 3 steps.
Source: finance.yahoo.com