Coinbase (COIN) Up or Down on March 19? is a daily Polymarket prediction market where traders buy and sell shares on whether Bitcoin’s price will finish higher (“Up”) or lower (“Down”) than its opening price over the daily window specified in the title. The current market probability is 50% for “Up,” a signal that the odds are evenly split. Shares in the correct outcome are redeemable for $1 each upon market resolution. If the two relevant closing prices are equal, the market will resolve 50-50.
The market opened on March 18, 2026 at 8:00 AM ET and is set to resolve on March 19, 2026, with trading activity reported as $0 at the time of writing. If COIN does not trade at all during the regular session, the market will resolve 50-50. If either of the relevant days are shortened, the official closing price published by NASDAQ for that shortened session will still be used for resolution. If either of the relevant days have no official closing price, the market will use the last valid on-exchange trade price of the regular session as the effective closing price.
The resolution source for this market is NASDAQ, specifically the exchange-certified Close values, and trading activity can accumulate quickly as the daily window progresses. The market provides a framework for investors to speculate on Bitcoin’s noon-price movement on March 19, 2026, relative to the prior day’s close, with NASDAQ’s published Close values serving as the test.
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