A figure larger than the fund's entire asset base appears to stem from mismatched share counts around a reverse split. Monday's genuine flow data tell a quieter story about rotation among bitcoin funds.
Crypto data feeds woke up Tuesday to a startling number: a $19.9 billion outflow from BlackRock's iShares Ethereum Trust in a single day, which would be the largest exit in the history of U.S. spot ether funds. Everything about it points to a bookkeeping error.
The figure is larger than the fund itself. The iShares Ethereum Trust, which trades under the ticker ETHA, reported net assets of about $9.94 billion as of Monday. A fund cannot lose twice what it holds.
The likely culprit is a corporate action. BlackRock carried out a one-for-three reverse split of ETHA shares after Monday's close, and the fund began trading on a split-adjusted basis on Tuesday under a new CUSIP. Each holder now owns one share for every three they held, at roughly three times the price.
How the error arises
Flow trackers estimate daily creations and redemptions by comparing changes in a fund's shares outstanding and multiplying by its net asset value. Mixing a pre-split share count with a post-split one produces a huge apparent drop.
The arithmetic fits almost exactly. BlackRock reported 486.28 million shares outstanding on Monday. Divided by three, that becomes about 162.1 million post-split shares, a paper decline of about 324.2 million shares. Multiply that by a post-split net asset value of about $61.29 and the result is roughly $19.87 billion, close to the reported outflow.
Ether itself shows no sign of a $20 billion exit. It traded at $2,716.35 early Tuesday, up 0.24% on the day. Fidelity's ether fund recorded a genuine outflow of $18.9 million on Monday. BlackRock's own figures show its share count fell by one million shares between and , consistent with a modest redemption of about $20 million rather than anything dramatic.
The real flows: bitcoin
The genuine story in Monday's data is in bitcoin. U.S. spot bitcoin ETFs posted net outflows of $89.8 million, ending a run of three straight weeks of net inflows. The two prior reported sessions alone had brought in $292.6 million. The split among issuers was sharp. BlackRock's iShares Bitcoin Trust took in $69.9 million, while the ARK 21Shares fund lost $85.2 million and Fidelity's fund lost $74.5 million.
Put differently, $159.7 million left two funds and less than half of that found its way into the market leader. That points to consolidation around BlackRock as much as to fading demand for bitcoin.
Bitcoin traded at $86,007 early Tuesday, up 0.3%, but still about 31.9% below its record of $126,296 set a year ago to the day.
What to watch
The ether figure should be corrected once trackers adjust for the split, and the first clean post-split print will show whether ETHA saw real outflows. For bitcoin, the question is whether BlackRock's inflows can keep offsetting redemptions elsewhere. A second outflow day led by the largest fund would carry far more weight than Monday's rotation.