BlackRock was a net buyer of $2.17 billion worth of Bitcoin from the July 1 low through last week, with $1.33 billion flowing into its iShares Bitcoin Trust during the latest week, Arkham said. The weekly buying volume was the largest since Bitcoin reached its all-time high on Oct. 6, 2025, as the cryptocurrency rallied above $80,000. Earlier Arkham monitoring cited by ChainCatcher indicated that purchases occurred each day last week.