Public companies have acquired approximately 131,000 bitcoins in the second quarter, marking an 18% increase in their holdings, according to Bitcoin Treasuries. In contrast, bitcoin ETF holdings rose by 8% to around 111,000 bitcoins during the same period. Despite this trend, Bitcoin ETFs remain the largest holders, with over 1.4 million bitcoins, representing 6.8% of the total supply cap of 21 million. Nick Marie, director of research at Ecoinometrics, noted that institutional buyers using ETFs have different motivations compared to public companies, which aim to enhance shareholder value through bitcoin accumulation. Currently, public companies collectively hold about 855,000 bitcoins, accounting for 4% of the total supply.