Strategy, Semler And BlackRock Double Down On Bitcoin As BTC ETF Inflows Top $1.5B In 3 Days

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Michael Saylor’s Strategy, Semler Scientific and asset management titan BlackRock have added to their respective Bitcoin stockpiles as net inflows for US Spot BTC ETFs (exchange-traded funds) topped $1.5 billion in the last 3 days.

That’s as Bitcoin pumped over 13% in the last month to trade at $94,465.12 as of 1:19 a.m. EST, according to CoinMarketCap data.

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Institutions Scoop Up More Bitcoin

Strategy, previously known as MicroStrategy and the largest corporate Bitcoin holder, added to its BTC stash. Yesterday, the firm announced in a filing with the US Securities and Exchange Commission (SEC) that it acquired an additional 1,895 Bitcoins for $180.3 million during the week of April 28 to May 4.

Strategy’s latest purchase is one of the smallest purchases made by the company in 2025, and has pushed the firm’s total holdings to 555,450 BTC.

US healthtech firm Semler Scientific also added to its Bitcoin stockpile. In an announcement yesterday, the company said it bought another 167 BTC for $16.2 million between April 30 and May 2. This comes after the firm announced a 111 BTC purchase on April 25.

BTC ETF Net Inflows Top $1.5B In 3 Days

Other institutional investors bought Bitcoin as well. Data from Farside Investors shows US BTC ETFs recorded net inflows of more than $1.5 billion in the past 3 weekdays. Much of the inflows were posted by BlackRock’s IBIT, which has been the dominant fund since Bitcoin ETFs launched in January last year.

According to on-chain analytics platform Arkham Intelligence, BlackRock bought $2.5 billion worth of Bitcoin last week. Arkham added that the asset management giant purchased $500 million worth of the leading crypto every day last week.

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