Bitcoin (BTC-USD) opened at $66,727.52 on Tuesday, 0.1% higher than Monday’s closing price of $66,691.44. The value of bitcoin at 7:15 a.m. ET had fallen below $66,500.

Ethereum (ETH-USD) opened at $2,024.50 on Tuesday, roughly even with Monday’s closing price of $2,203.51. The value of ethereum at 7:15 a.m. ET had moved above $2,030.

Crypto traders are closely watching developments in the Iran war. While crypto’s non-sovereign nature makes it a logical hedge against geopolitical conflict, the prospect of rising interest rates to stem war-related inflation is a headwind. Both bitcoin and ethereum show gains since the war began, which is not the case for many other assets, including gold (GC=F) and the S&P 500 (^GSPC).

The price of bitcoin this morning was 0.1% higher than Monday’s close. Here’s a look at how the opening bitcoin price has changed versus last week, month, and year:

One week ago: -5.9%

One month ago: +1.3%

One year ago: -19%

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.

The price of ethereum this morning was roughly even with Monday’s close. Here’s a look at how the opening ethereum price has changed versus last week, month, and year:

One week ago: -5.9%

One month ago: +4.9%

One year ago: +12.1%

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.

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.

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.

Step 1: Choose your Ethereum investment strategy

Step 2: Pick the right platform

Step 3: Complete identity verification (KYC)

Step 4: Fund your Ethereum purchase

Step 5: Execute the trade

Step 6: Securing your investment

Learn more: How to buy Ethereum and what to know before you do

Whether you’re brand new to tracking the value of 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.

More on crypto from the Yahoo Finance team: 

How to trade crypto: A step-by-step guide

Do you need a bitcoin credit card?

Can you buy crypto with a credit card?

President Trump called for a strategic bitcoin reserve. How it would work.

How to buy a house with crypto

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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.

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.

From how to buy bitcoin to how it works — find out what you should know about bitcoin as a cryptocurrency.

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President Trump is proposing holding and even adding to the government’s bitcoin store, a significant departure from the previous administration. Here's how the strategic bitcoin reserve would work.