📚 The Institutional Investors Rebalance: Inside the 13F Filings of Bitcoin ETFs Q1 2025 Those filing SEC Form 13F must report their ownership of securities when managing over 100 million of Bitcoin ETFs. Matthew Kimmell, @bc1matt, digital asset analyst at CoinShares, shares his insights on the first report of 2025 and explains why numbers only tell part of the story.