"Ethereum Up or Down - February 21, 10AM ET" is a hourly prediction market on Polymarket where traders buy and sell shares on whether Ethereum's price will finish higher ("Up") or lower ("Down") than its opening price over the hourly window specified in the title. The current market probability is 100% for "Up." A price of 100% means the market collectively assigns a 100% chance to that outcome. Prices update in real-time as traders react to live Ethereum price movements. Shares in the correct outcome are redeemable for $1 each upon market resolution.

As of today, "Ethereum Up or Down - February 21, 10AM ET" has generated $44.3K in total trading volume. Ethereum Up or Down markets attract active traders reacting to live price movements in real time — this level of activity helps ensure the current Up/Down odds are informed by a deep pool of market participants. You can track live prices and place a trade directly on this page.

To trade on "Ethereum Up or Down - February 21, 10AM ET," decide whether you believe Ethereum's price will close higher ("Up") or lower ("Down") at the end of the hourly candle beginning at 10:00AM ET. Buy "Up" if you think the close price will be higher than the open, or "Down" if you think it will be lower. Enter your amount and click "Trade." If your chosen outcome is correct at resolution, each share pays out $1.00. If incorrect, shares are worth $0.

The current probability for "Ethereum Up or Down - February 21, 10AM ET" is 100% for "Up," meaning the Polymarket crowd currently assigns a 100% chance that Ethereum's price will finish up over this hourly window. These odds update in real-time as traders react to live Ethereum price data. As the hour progresses, odds reflect the latest live price action relative to the open. Check back frequently or trade now before the window closes.

The "Ethereum Up or Down - February 21, 10AM ET" market resolves based on whether the closing price of the Ethereum/USDT 1-hour candle beginning at 10:00AM ET on Binance is greater than or equal to its opening price — if so, the outcome is "Up"; otherwise it is "Down." The resolution source is Binance (ETH/USDT). You can review the complete resolution criteria and data source in the "Rules" section on this page.

Yes. You don't need to trade to stay informed. Each "Ethereum Up or Down - February 21, 10AM ET" page displays a live countdown timer showing how much time remains in the current hour, alongside real-time Up/Down probabilities. Use the time-range navigation features at the top of the page to browse past and upcoming hourly windows. You can also view the Order Book and Activity tab for a real-time feed of trade flow.

Polymarket odds are set by real traders putting real money behind their beliefs. With $44.3K traded on “Ethereum Up or Down - February 21, 10AM ET,” the Up/Down probabilities reflect the collective judgment of traders watching Ethereum's live price in real time. For hourly markets like this one, the odds represent an instantaneous crowd consensus on Ethereum's price momentum — most meaningful as the window approaches its close, when traders have the most current price information available. For the latest stats on Polymarket's overall prediction accuracy, visit the accuracy page on Polymarket.

To place your first trade on "Ethereum Up or Down - February 21, 10AM ET," sign up for a free Polymarket account and fund it using crypto, a credit or debit card, or a bank transfer. Once your account is funded, return to this page — or navigate to the current active hourly window using the navigation bar at the top of the page — select "Buy Up" or "Buy Down," enter your amount, and click "Trade." If the window shown in the title has already closed, use the navigation bar to find the current live window. If you're new to prediction markets, click the "How it works" link at the top of any Polymarket page for a quick step-by-step walkthrough.

On Polymarket, the price of each outcome represents the market's implied probability. A price of 100¢ for "Up" in the "Ethereum Up or Down - February 21, 10AM ET" market means traders collectively believe there is roughly a 100% chance that Ethereum's price will finish up over this hourly window. If you buy "Up" shares at 100¢ and Ethereum finishes in that direction, you receive $1.00 per share — a profit of 0¢ per share. If Ethereum moves the other way, those shares are worth $0. Prices can shift meaningfully during the hour as Ethereum's live price action evolves.

This hourly window closed at 11:00AM ET but has not yet been officially resolved. Resolution typically follows within seconds to minutes of the window closing. Check the Rules section on this page for the exact resolution process and timeline.

The "Ethereum Up or Down - February 21, 10AM ET" market has 735 comments where traders share their analysis and react to live Ethereum price movements. Scroll down to the comments section to read what other participants think. You can also check the "Activity" tab for a real-time feed of trades on this window.

Polymarket is the world's largest prediction market, where you can stay informed and profit from your knowledge of real-world events. Traders buy and sell shares on outcomes for topics ranging from politics and elections to crypto, finance, sports, tech, and culture — including hourly Ethereum direction markets like "Ethereum Up or Down - February 21, 10AM ET." Prices reflect real-time, crowd-sourced probabilities backed by financial conviction, often providing faster and more accurate signals than polls, pundits, or traditional surveys.