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U.S. spot Bitcoin ETFs recorded a net outflow of $89.7 million on April 28, with BlackRock’s IBIT responsible for $112 million of that total. The Polymarket contract for Bitcoin reaching $80,000 in April now trades at
## Market reaction
The outflows reverse the prior week’s pattern, where institutional inflows averaged $664 million daily following the Middle East ceasefire announcement. The April 30 market dropped from 56% to 18%, a 37-point collapse, as traders reassess whether Bitcoin’s rally above $78,000 can hold. The market predicting Bitcoin dipping to $60,000 by April’s end is drawing increased interest, with traders likely eyeing profit-taking after the recent run.
## Why it matters
The ETF outflows are the first major reversal since institutional money began flowing in at scale. BlackRock’s IBIT alone accounted for more than the total net outflow ($112 million vs. $89.7 million net), meaning other funds partially offset the damage. But the speed of the odds decline, 37 points in a matter of days on the April contract, signals that short-term positioning has turned bearish on Bitcoin price targets.
Long-term contracts tell a different story. Bitcoin reaching $200,000 by December 31, 2026 holds at 4.8% YES, roughly unchanged. Traders are repricing near-term risk without abandoning longer-dated bets.
## What to watch
The next few days of ETF flow data will determine whether April 28 was an isolated event or the start of a sustained outflow trend. BlackRock’s positioning matters most given IBIT’s outsized role in the day’s numbers. A return to net inflows would likely push the April $80K contract back up; continued outflows would pressure it further toward zero as the month closes.
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