Solana ETFs Notch 12 Straight Weeks of Inflows as Bitcoin Posts Smallest Weekly Gain in 141 Weeks

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Spot Solana ETFs extended their inflow streak to 12 consecutive weeks, pulling in $13.2 million in the week ending September 18, 2026, while Bitcoin spot ETFs netted just $6.2 million over the same period, the smallest weekly inflow in the funds' 141 weeks of trading since launching on January 11, 2024. Solana's daily flows were modest but never negative, with $11.01 million on September 14, $1.35 million on September 15, $836,926 on September 16 and no change on September 17, even as the Senate rejected the CLARITY Act by a 49 to 50 vote on September 15 and the Federal Reserve raised its target range by 25 basis points to an upper bound of 3.75% to 4.00% the next day. Bitcoin funds swung sharply in contrast, losing $450.33 million on September 15 and $295.98 million on September 16 before recovering with $159.45 million on September 17 and $433.03 million on September 18, leaving three positive sessions worth $752.52 million against two negative sessions of $746.31 million and a total gross movement of $1.499 billion. The Fidelity Wise Origin Bitcoin Fund, FBTC, posted the largest single-day inflow at $310.7 million, while the iShares Bitcoin Trust, IBIT, added $108 million. The Bitwise Solana Staking ETF, BSOL, was the only Solana fund with disclosed inflows for the week and closed 12.12% higher, ahead of SOL's own 11.29% gain, as Bitcoin funds hold cumulative inflows of $55.16 billion and net assets of $102.53 billion versus Solana's $1.37 billion and $1.42 billion.

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