Bitcoin Up or Down on May 21?
4 signals across 1 market · $9,868 tracked · resolves May 21, 2026
This event tracks whether Bitcoin’s BTC/USDT price on Binance closes higher or lower at noon ET on May 21 compared with the noon ET close on May 20. PolySpotter follows the Polymarket odds for the up/down outcome and highlights smart money activity, including a signal from a profitable serial cross-market bettor.
Markets (1)
Top trades across all markets
- Profitable serial trader flips Down
Profitable high-volume crypto trader flipped from a closed Up position into Down during a major price move and market volume spike.
$4,090Wallet win rate: 59%Score: 4.5 - Profitable serial timer
Profitable 75% winner with a repeat near-resolution pattern bought Down 44 minutes before the BTC market resolves.
$1,700Wallet win rate: 75%Score: 4.4 - Profitable serial cross-market bettor
Profitable high-volume cross-market trader bought Down on BTC despite the price later moving against their entry.
$2,183Wallet win rate: 60%Score: 3.0 - Profitable serial crypto trader
Profitable serial cross-market trader with a large history is buying the high-probability Down side about 104 minutes before resolution, aligned with strong recent market momentum.
$1,894Wallet win rate: 60%Score: 3.0
Top wallets in this event
- 0x6e1d50…d0fa$4,090 · 1 market · 1 alert · 59% wins
- 0x0fe40e…01b7$4,077 · 1 market · 2 alerts · 60% wins
- 0x0e3ced…6e60$1,700 · 1 market · 1 alert · 75% wins
FAQs
What are the Bitcoin Up or Down on May 21 odds?
The odds reflect Polymarket traders’ current expectations for whether Bitcoin will be higher or lower at the May 21 noon ET reference candle versus the May 20 noon ET candle. PolySpotter tracks those market prices and shows how smart money is positioning.
How does this Bitcoin prediction market resolve?
The market resolves “Up” if the Binance BTC/USDT 1-minute candle close at 12:00 PM ET on May 21 is higher than the 12:00 PM ET close on May 20. It resolves “Down” if the May 21 close is lower.
Is smart money betting on Bitcoin going up or down?
PolySpotter has tracked $2,183 in smart money activity across this event, including a signal tied to a profitable serial cross-market bettor. Check the live event page for the latest side, size, and timing of those bets.
Why do traders watch this BTC up/down market?
Daily Bitcoin up/down markets are simple, short-term prediction markets that let traders price a specific 24-hour move instead of a long-term BTC forecast. They can also reveal how experienced Polymarket wallets are reacting to market momentum.
When does the Bitcoin May 21 market resolve?
The event is scheduled to resolve after the May 21, 2026 12:00 PM ET Binance BTC/USDT reference candle is finalized, with resolution listed by 16:00 UTC.