Bitcoin ETFs Draw $457M as BTC Volatility Soars Ahead of US CPI

US spot Bitcoin ETFs recorded net inflows of $457.3 million on Dec. 17, led by Fidelity’s FBTC ($391.5M) and BlackRock’s IBIT ($111.2M), according to Farside. The flows coincided with extreme intraday Bitcoin volatility — a rise from about $87,000 to above $90,000 then a drop below $86,000 — and roughly $400 million in liquidations affecting about 123,200 traders. Spot Ethereum ETFs saw their fifth consecutive day of outflows totaling $22.4 million. ETF inflows briefly supported an $80 billion expansion in broader crypto market cap before a $120 billion pullback. Market moves were driven by expectations for the US Consumer Price Index (CPI) report and the Bank of Japan’s CPI and rate decisions as additional macro catalysts. Traders should watch spot Bitcoin ETF flows, FBTC and IBIT activity, CPI outcomes and resulting liquidity swings for short-term trading signals and elevated liquidation risk.
Neutral
Net inflows into spot Bitcoin ETFs — led by FBTC and IBIT — are a bullish demand signal for BTC exposure and can increase market liquidity for ETF-based buying. However, the simultaneous extreme intraday volatility and large liquidations (~$400M) indicate elevated short-term risk and the potential for rapid reversals. The presence of concentrated flows (Fidelity large inflows vs. mixed flows at Bitwise/ARK) suggests uneven distribution of investor demand across products, which can create localized pricing disparities in ETF secondary markets without guaranteeing sustained upward pressure on BTC spot price. Macro catalysts (US CPI expectations, BOJ decisions) add uncertainty; positive CPI surprises could sustain risk-on flows, while hotter-than-expected prints could trigger sell-offs and further liquidations. Overall, the news presents a mixed signal: supportive for liquidity and demand via ETFs but also warning of high short-term volatility and liquidation risk — hence a neutral short-term price view with bullish structural implications if ETF inflows persist.