BTC 15-minute sharp decline of 0.52%: ETF continuous net outflows combined with options expiration hedging pressure

On May 28, 2026, from 13:30 to 13:45 (UTC), BTC dropped by -0.52% within 15 minutes, with a price range of 72,765.9 to 73,180.5 USDT, and an amplitude of 0.57%. The price quickly fell from about $73,100 to $72,711.90, indicating insufficient buying support, and the market is in a short-term correction trend.

The main drivers of this movement are the continuous net outflows of spot ETFs combined with market maker hedging activities ahead of options expiration. The spot Bitcoin ETF experienced consecutive net outflows on May 26 and 27, with a total net outflow of $478.9 million over two days, directly exerting selling pressure on the spot market. Meanwhile, on May 29, $6.25 billion worth of BTC options will expire, with the Max Pain at $75,000 and a high concentration of put options. Market makers tend to sell futures contracts for delta hedging when prices decline, and this behavior intensified the selling pressure on the afternoon of May 28.

Additionally, concentrated liquidations of leveraged longs further amplified the decline. In the past 24 hours, long liquidations amounted to $95.48 million, accounting for 95.1% of total liquidations. Automated liquidation triggers created a positive feedback loop of "liquidation - decline." During the same period, a dormant wallet mined in 2009-2010 transferred 2,650 BTC to OTC desks (worth about $203 million at the time), indicating long-term holders taking profits at relatively high levels and signaling a phased exit to the market. On a macro level, macroeconomic data such as PCE inflation and GDP figures will be released later that day. Traders tend to reduce risk exposure ahead of the data release, with cautious sentiment reflected in afternoon position reductions. The Fear & Greed Index has fallen to 26, in the "fear" zone, indicating a significant cooling of market sentiment.

Currently, BTC is testing a key support near $73,000. If this support fails, it could point toward the $72,000 region and trigger programmed sell orders. Key focuses should include the flow of funds into spot ETFs, market sentiment recovery after May 29 options expiration, and macroeconomic data results later in the evening. Short-term volatility risks remain, and it is advisable to monitor key support and resistance levels, while being alert to the risk of passive liquidation of leveraged positions.