BTC 15-minute increase of 0.58%: ETF capital inflow reversal and whale-led buying resonate to drive the market

On April 17, 2026, from 13:45 to 14:00 (UTC), the BTC price experienced a short-term surge of 0.58%, fluctuating between 76,626.0 and 77,412.2 USDT, with an amplitude of 1.02%. This abnormal movement attracted widespread market attention, accompanied by liquidity tightening and a significant increase in trading volume driven by active buy orders.

The main driver of this fluctuation was a clear reversal in ETF capital inflows. In mid-April, BTC spot ETF net inflows for three consecutive days totaled $1.02 billion, with major ETF products like Fidelity and BlackRock making large subscription orders on April 17, significantly increasing buying pressure in the spot market. Meanwhile, on-chain data shows that whales dominated large transfers (single transfers >$100k accounted for up to 89%), with whale funds concentrating into exchanges, amplifying active large buy orders that directly pushed prices higher.

Additionally, the derivatives market was active, with the total open interest of BTC contracts across all chains increasing by 5.46% in a single day. Continued inflows of leveraged funds and active institutional positioning boosted market sentiment across multiple chains. The depth of the spot market also declined simultaneously, with daily trading volume increasing by 15% week-over-week, and the impact of active buy orders intensifying. Under a stable macro environment, 80% of institutional investors expressed intentions to reallocate BTC, strengthening bullish confidence. No large-scale liquidations occurred, indicating the market was primarily driven by active buying, with secondary factors resonating with core drivers, further amplifying price elasticity.

It is worth noting that while ETF capital inflows are a short-term positive signal, if subsequent subscription momentum weakens or inflows turn into outflows, the spot market may face a correction risk. Moreover, whale-dominated fund flow structures can exacerbate volatility, and declining liquidity makes prices more sensitive to large trades. Investors are advised to monitor ETF capital flow trends, on-chain large transfers, and exchange net inflows, as well as to keep an eye on spot market depth and short-term large holder activity to timely guard against structural and liquidity risks. For more market updates, please stay tuned.