BTC and ETH Jump as U.S. Macro Eases; Spot ETF Inflows Lead Rally

Foresight News argues the latest crypto “bull bounce” is not random, but a stress test of market structure—where U.S. fiscal/monetary policy swings increasingly drive short-term direction. The catalyst cited is U.S. Treasury long-bond repo operations: on Aug 19, Treasury Secretary Bessent lifted the single-tranche buyback size for 10–30Y Treasuries to at least $4B from $2B, aiming to stabilize the long-end after rising yields and heavy selling. The market interpreted this as a path to looser conditions for borrowing costs, weakening the dollar and supporting risk assets like BTC. Spot Bitcoin ETFs were highlighted as the early trigger. In the week ending Aug 21, total net inflows into U.S. spot BTC and ETH ETFs reached $2.6B, the highest since Oct 2025. BTC spot ETFs accounted for about $1.9B net inflows; weekly trading volume surged from $6.9B to $22.1B (+219%), and net assets rose from $76.6B to $96.1B. ETH spot ETFs saw $697M net inflows, the strongest week since Oct 3, 2025; weekly volume increased from $1.9B to $6.9B (+259.4%). The prior week had net outflows of $392M across both. While BTC sparked the move, “elasticity” shifted to ETH and altcoins. ETH rose from ~$1,900 to a high near $2,546 (+29.8%), outperforming BTC’s +22.9%. ETH/BTC recovered to ~0.031 and ETH market cap returned above $280B. Drivers cited: ETH spot ETF inflows, shrinking exchange ETH supply (down ~15% since early June), and SEC’s Aug 18 draft rule for public crypto token sales—seen as a positive step for clearer issuance frameworks.
Bullish
The article links the rebound to a policy-driven shift in U.S. liquidity expectations and directly highlights spot ETF demand as the early, measurable trigger. BTC spot ETF net inflows ($~1.9B in the week) and ETH spot ETF net inflows ($~697M) both reached multi-month highs, which tends to support price floors through persistent buying pressure. Separately, shrinking exchange ETH balances (~15% lower since early June) can amplify upside when ETF demand arrives, while the SEC’s draft token-sale framework is framed as reducing regulatory uncertainty. Historically, similar “ETF-led” phases have often produced sustained momentum: when inflows accelerate faster than liquid supply, short-term volatility can remain elevated but the trend usually lasts longer than a purely technical bounce. In the short term, traders may expect continuation and possible rotation from BTC into ETH (supported by the ETH outperformance and ETH/BTC recovery). In the long term, if U.S. macro conditions remain supportive and regulatory clarity progresses, the probability of higher baseline demand for spot BTC/ETH ETFs increases; however, reversals can occur if policy expectations flip (e.g., repo/liquidity tightening or a risk-off move).