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Bitcoin 15-minute Up or Down — historical patterns

How often does Bitcoin close UP vs DOWN in 15-minute Polymarket markets? This page breaks down real historical outcomes — by time of day and day of week — so you can spot statistical patterns. Data updates automatically.

Bitcoin shows a clear, repeatable skew at 15-minute — several slots deviate well beyond chance, which is unusual for short-term crypto markets.

Key takeaway: The standout pattern is 10:15PM-10:30PM ET, which closed DOWN 64% of the time across 90 markets.

Overview

49% UP

Across the most recent markets, Bitcoin closed UP 49% of the time in 15-minute slots (8,636 markets analyzed). A reading near 50% means the market is efficient; a strong skew suggests a recurring pattern.

Strongest patterns

The slot with the strongest UP lean is 5:30AM-5:45AM (62% UP over 90 occurrences).

The slot with the strongest DOWN lean is 10:15PM-10:30PM (64% DOWN over 90 occurrences).

Slot (ET)UP %DOWN %MarketsSignificance
10:15PM-10:30PM36%64%90★★★
6:30PM-6:45PM37%63%90★★
5:30AM-5:45AM62%38%90★★
8:45AM-9:00AM62%38%90★★
9:00AM-9:15AM38%62%90★★
9:15AM-9:30AM39%61%90★★
12:45AM-1:00AM40%60%90
4:00PM-4:15PM60%40%90
9:15PM-9:30PM40%60%90
1:15AM-1:30AM41%59%90
5:00AM-5:15AM41%59%90
8:15AM-8:30AM41%59%90

Win rate by time of day (ET)

Slot (ET)UP %DOWN %Markets
12AM ET46%54%360
1AM ET50%50%360
2AM ET48%52%360
3AM ET51%49%360
4AM ET48%52%360
5AM ET51%49%360
6AM ET49%51%360
7AM ET49%51%360
8AM ET49%51%360
9AM ET46%54%360
10AM ET49%51%360
11AM ET49%51%358
12PM ET53%47%359
1PM ET51%49%360
2PM ET49%51%360
3PM ET53%47%360
4PM ET54%46%359
5PM ET50%50%360
6PM ET43%57%360
7PM ET49%51%360
8PM ET48%52%360
9PM ET47%53%360
10PM ET47%53%360
11PM ET53%47%360

Win rate by day of week

Slot (ET)UP %DOWN %Markets
Sunday49%51%1249
Monday47%53%1248
Tuesday50%50%1248
Wednesday49%51%1247
Thursday49%51%1213
Friday49%51%1183
Saturday52%48%1248
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How this works

Each 15-minute Polymarket market resolves UP or DOWN. We aggregate outcomes by their start time and weekday, then compute the UP rate and a statistical significance score (Z-score). Patterns with more occurrences and higher Z-scores are more reliable. Past patterns do not guarantee future results.

Updated: 2026-08-13 · Not financial advice. Historical data only.