U.S. spot Bitcoin and Ethereum ETFs suffered combined outflows of $1.11 billion over two days after a procedural vote on the CLARITY Act failed and the Federal Reserve raised interest rates. Bitcoin ETFs lost $295.98 million on Sept. 16 after $450.33 million exited the previous day, bringing the two-day total to $746.31 million. BlackRock's IBIT led listed Bitcoin ETF outflows at $144.11 million, followed by Ark Invest's ARKB at $84.40 million and Fidelity's FBTC at $52.72 million, according to SoSoValue. Ethereum ETF outflows increased to $224.11 million on Sept. 16 from $141.47 million on Sept. 15, reaching $365.58 million over two days and marking the largest single-day outflow since January 30, 2026. BlackRock's ETHA lost $110.03 million, while Fidelity's FETH shed $55.58 million. The FOMC (Federal Reserve committee setting U.S. monetary policy) voted 12-0 to lift the federal funds rate by 25 basis points to a 3.75% to 4% target range, the first increase since July 2023. Chair Kevin Warsh said financial conditions were not restrictive, while 16 of 18 policymakers projected at least one more quarter-point increase this year. Bitget analyst Lewis Huang said Bitcoin could absorb more of the immediate shock than equities but warned that continued tightening after energy-price pressures from the Iran conflict fade could create a policy overshoot. BTC stood at $76,647, while ETH was at $2,444, with both assets trading near stated technical levels.