Polymarket market analysis
Bitcoin ETF Flows on April 21?
Summary
This market will resolve to "Positive" if total Bitcoin ETF flows on Tuesday, April 21, 2026 are greater than 0, and to "Negative" if they are less than 0. If flows are exactly 0, the market will resolve to 50-50. The resolution source is Farside Investors, specifically the ETF Flow tab available at https://farside.co.uk/btc/ in the "Total" column for the date specified in the title. The total flows will be considered finalized for that day once flows for all ETF providers have been published. If data for any ETF provider remains unpublished by 12 PM ET, 2 days after the date specified in the title, the market will resolve based on all available data published up to that time. If the resolution source becomes permanently unavailable or fails to publish any data by 12 PM ET, 2 days after the specified date, the market will resolve 50-50.
Spread analysis
No intra-market edge right now (sum of best asks is at or above $1.00).
Polymarket taker fees vary by category between 0% and 1.8%. Always confirm before sizing.
Outcomes
| Outcome | Best ask |
|---|---|
| Positive | 91.0% |
| Negative | 9.0% |
Price history
Last 7 days
Frequently asked questions
- What is this market about?
- Bitcoin ETF Flows on April 21? The market resolves on Apr 21, 2026 based on the rules described on Polymarket.
- How does intra-market arbitrage work here?
- If the best-ask prices for every outcome sum to less than $1.00, you can buy each outcome and be guaranteed a $1.00 payout regardless of which one resolves YES.
- What are the fees?
- Polymarket taker fees on this category are typically between 0% and 1.8%. Confirm the live fee on Polymarket before placing orders.