First-quarter 13F filings showed Mubadala raising its BlackRock iShares Bitcoin Trust ETF stake to nearly $660 million. Harvard University fully exited a BlackRock spot Ethereum ETF position that had been worth about $86.8 million. Harvard also reduced its IBIT stake by about 43% to roughly $117 million. ADIC kept its IBIT position unchanged at about $315.8 million.