ChainCatcher reported, citing SoSoValue data, that U.S. spot Bitcoin ETFs recorded total net outflows of $90.6566 million on June 18 Eastern Time. The figure reflects the combined daily net inflow and outflow activity across spot Bitcoin ETF products for that reporting day, with the overall category ending the day in net outflow.
MSBT Ranked First in Daily Net Inflows
Among individual spot Bitcoin ETF products, the largest single-day net inflow was recorded by Morgan Stanley ETF MSBT. According to the SoSoValue data, MSBT posted a daily net inflow of $10.4337 million. Its historical cumulative net inflow has now reached $301 million.
During the same period, the spot Bitcoin ETF with the largest single-day net outflow was BlackRock ETF IBIT. IBIT recorded a daily net outflow of $96.6552 million. Despite the daily outflow, IBIT’s historical cumulative net inflow stands at $62.07 billion, the largest cumulative inflow figure disclosed in this dataset.
Total Net Assets Stood at $78.325 Billion
As of the time of publication, total net assets of spot Bitcoin ETFs stood at $78.325 billion. The ETF net asset ratio, defined in the source data as ETF market value as a share of Bitcoin’s total market capitalization, reached 6.19%. This metric shows the relative scale of spot Bitcoin ETF assets within Bitcoin’s overall market value.
On a cumulative basis, historical net inflows into spot Bitcoin ETFs have reached $53.398 billion. The June 18 data therefore includes three key points from the SoSoValue dataset: total daily net outflows for the category, MSBT ranking first by daily net inflows, and IBIT ranking first by daily net outflows.

