Monday's $33.5 million was the largest single-day inflow since December, pushing cumulative net inflows to a record $1.22 billion and trading volume to $166.8 million.

U.S. spot bitcoin ETFs closed Friday with $307.45 million in net inflows, completing five consecutive positive sessions worth $1.92 billion.

U.S. spot bitcoin ETFs drew $1.92 billion in net inflows during the week of August 17 to August 21, while ether funds added $697.18 million.