BTC 15-minute increase of 0.97%: Driven by active buying and ETF fund inflows pushing the market higher

On March 26, 2026, from 20:00 to 20:15 (UTC), the spot Bitcoin (BTC) 15-minute candlestick showed a return of +0.97%, with a price range of $68,428.7 to $69,460.2 USDT and an amplitude of 1.51%. Trading volume during this period increased by 18% compared to the previous period, reaching approximately $120 million. Market attention significantly intensified, and short-term volatility increased.

The main driver of this movement was strong active buying in the spot market. Specifically, multiple large transfers of ≥1000 BTC appeared on-chain, with net inflows of about 2800 BTC on major trading platforms, significantly higher than the previous period. Additionally, active addresses on-chain rose to 1.1 million, up 3.2% month-over-month, indicating active fund transfers and further confirming rapid large-capital inflows. ETF channels also contributed, with US Bitcoin spot ETF net inflows of $120 million on the same day, and a noticeable increase in volume during the 20:00–20:15 interval, showing continued institutional buying and expanding demand.

Furthermore, the derivatives market resonated simultaneously. Open interest (OI) in options increased by 7% during this period, with major positions concentrated at strike prices between $70,000 and $75,000. Perpetual contract funding rates rose from 0.009% to 0.013%. Futures basis widened from 0.8% to 1.1%, all indicating strengthened short-term bullish expectations. This period also coincided with high volatility before European and American market settlements, amplifying market heat and capital game dynamics, further increasing spot volatility. On a macro level, approaching quarterly settlements, influx of risk-averse funds, and the overlay of ETF/derivative structures contributed to multi-factor market resonance.

However, caution is advised as short-term volatility risks remain high. Increased concentration of derivatives positions and rising funding rates could trigger partial liquidations if bullish leverage is released during a correction. Continuous monitoring of net fund flows on exchanges, ETF subscription/redemption activity, and large on-chain transactions is necessary. As the market approaches settlement dates, structural changes are sensitive; close attention should be paid to support/resistance levels and macro news to stay informed on the latest market developments.